Move Tuscany from Incubator to top level.

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@668359 13f79535-47bb-0310-9956-ffa450edef68

86 files changed, 8749 insertions, 0 deletions

diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/ActivationException.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/ActivationException.java
new file mode 100644
index 0000000000..c86c876075
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/ActivationException.java
@@ -0,0 +1,37 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.tuscany.sca.core.assembly;
+
+
+/**
+ * Denotes an error starting the runtime
+ *
+ * @version $Rev$ $Date$
+ */
+public class ActivationException extends Exception {
+    private static final long serialVersionUID = 8612661660934426123L;
+
+    public ActivationException(String message) {
+        super(message);
+    }
+
+    public ActivationException(Throwable cause) {
+        super(cause);
+    }
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/CompositeActivator.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/CompositeActivator.java
new file mode 100644
index 0000000000..e8d5474b83
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/CompositeActivator.java
@@ -0,0 +1,144 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.core.assembly;
+
+import org.apache.tuscany.sca.assembly.Component;
+import org.apache.tuscany.sca.assembly.Composite;
+import org.apache.tuscany.sca.core.context.ComponentContextHelper;
+import org.apache.tuscany.sca.core.invocation.ProxyFactory;
+import org.apache.tuscany.sca.interfacedef.java.JavaInterfaceFactory;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+import org.apache.tuscany.sca.runtime.RuntimeComponentReference;
+import org.apache.tuscany.sca.runtime.RuntimeComponentService;
+
+/**
+ * Start/stop a composite
+ * 
+ * @version $Rev$ $Date$
+ */
+public interface CompositeActivator {
+    /**
+     * Activate a composite
+     * @param composite
+     */
+    void activate(Composite composite) throws ActivationException;
+
+    /**
+     * Activate a component reference
+     * @param component
+     * @param ref
+     */
+    void activate(RuntimeComponent component, RuntimeComponentReference ref);
+
+    /**
+     * Activate a component reference
+     * @param component
+     * @param ref
+     */
+    void activate(RuntimeComponent component, RuntimeComponentService service);
+
+    /**
+     * De-activate a component reference
+     * @param component
+     * @param ref
+     */
+    void deactivate(RuntimeComponent component, RuntimeComponentReference ref);
+
+    /**
+     * De-activate a component reference
+     * @param component
+     * @param ref
+     */
+    void deactivate(RuntimeComponent component, RuntimeComponentService service);
+
+    /**
+     * Stop a composite
+     * @param composite
+     */
+    void deactivate(Composite composite) throws ActivationException;
+
+    /**
+     * Start a component
+     * @param component
+     */
+    void start(Component component) throws ActivationException;
+
+    /**
+     * Stop a component
+     * @param component
+     */
+    void stop(Component component) throws ActivationException;
+
+    /**
+     * Start components in a composite
+     * @param composite
+     */
+    void start(Composite composite) throws ActivationException;
+
+    /**
+     * Stop components in a composite
+     * @param composite
+     */
+    void stop(Composite composite) throws ActivationException;
+
+    /**
+     * Get the component context helper
+     * @return
+     */
+    ComponentContextHelper getComponentContextHelper();
+
+    /**
+     * Get the proxy factory
+     * @return
+     */
+    ProxyFactory getProxyFactory();
+
+    /**
+     * Get the java interface factory
+     * @return
+     */
+    JavaInterfaceFactory getJavaInterfaceFactory();
+
+    /**
+     * Configure the runtime component with component context
+     * @param component
+     */
+    void configureComponentContext(RuntimeComponent component);
+
+    /**
+     * Resolve a component by URI in the domain
+     * @param componentURI
+     * @return
+     */
+    Component resolve(String componentURI);
+
+    /**
+     * Set the domain composite
+     * @param domainComposite
+     */
+    void setDomainComposite(Composite domainComposite);
+
+    /**
+     * Get the domain composite
+     * @return
+     */
+    Composite getDomainComposite();
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/CompositeActivatorImpl.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/CompositeActivatorImpl.java
new file mode 100644
index 0000000000..80d2f7fb9a
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/CompositeActivatorImpl.java
@@ -0,0 +1,737 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.core.assembly;
+
+import org.apache.tuscany.sca.assembly.AssemblyFactory;
+import org.apache.tuscany.sca.assembly.Binding;
+import org.apache.tuscany.sca.assembly.Component;
+import org.apache.tuscany.sca.assembly.ComponentReference;
+import org.apache.tuscany.sca.assembly.ComponentService;
+import org.apache.tuscany.sca.assembly.Composite;
+import org.apache.tuscany.sca.assembly.Implementation;
+import org.apache.tuscany.sca.assembly.Reference;
+import org.apache.tuscany.sca.assembly.SCABinding;
+import org.apache.tuscany.sca.assembly.SCABindingFactory;
+import org.apache.tuscany.sca.assembly.Service;
+import org.apache.tuscany.sca.assembly.WireableBinding;
+import org.apache.tuscany.sca.context.RequestContextFactory;
+import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessorExtensionPoint;
+import org.apache.tuscany.sca.core.context.ComponentContextHelper;
+import org.apache.tuscany.sca.core.context.ComponentContextImpl;
+import org.apache.tuscany.sca.core.invocation.ProxyFactory;
+import org.apache.tuscany.sca.core.scope.ScopeRegistry;
+import org.apache.tuscany.sca.core.scope.ScopedRuntimeComponent;
+import org.apache.tuscany.sca.interfacedef.InterfaceContract;
+import org.apache.tuscany.sca.interfacedef.InterfaceContractMapper;
+import org.apache.tuscany.sca.interfacedef.java.JavaInterfaceFactory;
+import org.apache.tuscany.sca.provider.BindingProviderFactory;
+import org.apache.tuscany.sca.provider.ImplementationProvider;
+import org.apache.tuscany.sca.provider.ImplementationProviderFactory;
+import org.apache.tuscany.sca.provider.ProviderFactoryExtensionPoint;
+import org.apache.tuscany.sca.provider.ReferenceBindingProvider;
+import org.apache.tuscany.sca.provider.ServiceBindingProvider;
+import org.apache.tuscany.sca.runtime.EndpointReference;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+import org.apache.tuscany.sca.runtime.RuntimeComponentContext;
+import org.apache.tuscany.sca.runtime.RuntimeComponentReference;
+import org.apache.tuscany.sca.runtime.RuntimeComponentService;
+import org.apache.tuscany.sca.runtime.RuntimeWire;
+import org.apache.tuscany.sca.runtime.RuntimeWireProcessor;
+import org.apache.tuscany.sca.work.WorkScheduler;
+
+/**
+ * @version $Rev$ $Date$
+ */
+public class CompositeActivatorImpl implements CompositeActivator {
+
+    private final static String CALLBACK_PREFIX = "$callback$.";
+
+    private final AssemblyFactory assemblyFactory;
+    private final InterfaceContractMapper interfaceContractMapper;
+    private final ScopeRegistry scopeRegistry;
+    private final WorkScheduler workScheduler;
+    private final RuntimeWireProcessor wireProcessor;
+    private final ProviderFactoryExtensionPoint providerFactories;
+
+    private final RequestContextFactory requestContextFactory;
+    private final ProxyFactory proxyFactory;
+    private final JavaInterfaceFactory javaInterfaceFactory;
+
+    private final ComponentContextHelper componentContextHelper;
+
+    private Composite domainComposite;
+
+    /**
+     * @param assemblyFactory
+     * @param interfaceContractMapper
+     * @param workContext
+     * @param workScheduler
+     * @param wirePostProcessorRegistry
+     */
+    public CompositeActivatorImpl(AssemblyFactory assemblyFactory,
+                                  JavaInterfaceFactory javaInterfaceFactory,
+                                  SCABindingFactory scaBindingFactory,
+                                  InterfaceContractMapper interfaceContractMapper,
+                                  ScopeRegistry scopeRegistry,
+                                  WorkScheduler workScheduler,
+                                  RuntimeWireProcessor wireProcessor,
+                                  RequestContextFactory requestContextFactory,
+                                  ProxyFactory proxyFactory,
+                                  ProviderFactoryExtensionPoint providerFactories,
+                                  StAXArtifactProcessorExtensionPoint processors) {
+        this.assemblyFactory = assemblyFactory;
+        this.interfaceContractMapper = interfaceContractMapper;
+        this.scopeRegistry = scopeRegistry;
+        this.workScheduler = workScheduler;
+        this.wireProcessor = wireProcessor;
+        this.providerFactories = providerFactories;
+        this.javaInterfaceFactory = javaInterfaceFactory;
+        this.requestContextFactory = requestContextFactory;
+        this.proxyFactory = proxyFactory;
+        this.componentContextHelper = new ComponentContextHelper(assemblyFactory, javaInterfaceFactory, processors);
+    }
+
+    /**
+     * @see org.apache.tuscany.sca.core.assembly.CompositeActivator#activate(org.apache.tuscany.sca.runtime.RuntimeComponent, org.apache.tuscany.sca.runtime.RuntimeComponentReference)
+     */
+    public void activate(RuntimeComponent component, RuntimeComponentReference ref) {
+        resolveTargets(ref);
+        for (Binding binding : ref.getBindings()) {
+            addReferenceBindingProvider(component, ref, binding);
+            addReferenceWire(component, ref, binding);
+            ReferenceBindingProvider provider = ref.getBindingProvider(binding);
+            if (provider != null) {
+                provider.start();
+            }
+        }
+    }
+
+    public void deactivate(RuntimeComponent component, RuntimeComponentReference ref) {
+        removeReferenceWires(ref);
+        for (Binding binding : ref.getBindings()) {
+            removeReferenceBindingProvider(component, ref, binding);
+        }
+
+    }
+
+    /**
+     * @param component
+     * @param reference
+     * @param binding
+     */
+    private void addReferenceBindingProvider(RuntimeComponent component,
+                                             RuntimeComponentReference reference,
+                                             Binding binding) {
+        BindingProviderFactory providerFactory =
+            (BindingProviderFactory)providerFactories.getProviderFactory(binding.getClass());
+        if (providerFactory != null) {
+            @SuppressWarnings("unchecked")
+            ReferenceBindingProvider bindingProvider =
+                providerFactory.createReferenceBindingProvider((RuntimeComponent)component,
+                                                               (RuntimeComponentReference)reference,
+                                                               binding);
+            if (bindingProvider != null) {
+                ((RuntimeComponentReference)reference).setBindingProvider(binding, bindingProvider);
+            }
+        } else {
+            throw new IllegalStateException("Provider factory not found for class: " + binding.getClass().getName());
+        }
+    }
+
+    /**
+     * @param reference
+     */
+    private void resolveTargets(RuntimeComponentReference reference) {
+        // Support for distributed domain follows
+
+        // go over any targets that have not been resolved yet (as they are running on other nodes)
+        // and try an resolve them remotely
+        // TODO - this should work for any kind of wired binding but the only wireable binding 
+        //        is currently the SCA binding so we assume that
+        for (ComponentService service : reference.getTargets()) {
+            if (service.isUnresolved()) {
+                for (Binding binding : service.getBindings()) {
+                    // TODO - we should look at all the bindings now associated with the 
+                    //        unresolved target but we assume the SCA binding here as
+                    //        its currently the only wireable one
+                    if (binding instanceof WireableBinding) {
+                        WireableBinding scaBinding = (WireableBinding)binding;
+
+                        // clone the SCA binding and fill in service details 
+                        // its cloned as each target 
+                        SCABinding clonedSCABinding = null;
+                        try {
+                            clonedSCABinding = (SCABinding)((WireableBinding)scaBinding).clone();
+                            clonedSCABinding.setURI(service.getName());
+                            // wireable binding stuff needs to go. SCA binding uses it
+                            // currently to get to the service to work out if the service
+                            // is resolved. 
+                            WireableBinding endpoint = ((WireableBinding)clonedSCABinding);
+                            endpoint.setTargetComponentService(service);
+                            //endpoint.setTargetComponent(component); - not known for unresolved target
+                            //endpoint.setTargetBinding(serviceBinding); - not known for unresolved target
+
+                            // add the cloned SCA binding to the reference as it will be used to look up the 
+                            // provider later
+                            reference.getBindings().remove(binding);
+                            reference.getBindings().add(clonedSCABinding);
+                        } catch (Exception e) {
+                            // warning("The binding doesn't support clone: " + binding.getClass().getSimpleName(), binding);
+                        }
+                    } else {
+                        throw new IllegalStateException(
+                                                        "Unable to create a distributed SCA binding provider for reference: " + reference
+                                                            .getName()
+                                                            + " and target: "
+                                                            + service.getName());
+                    }
+                }
+            }
+        }
+    }
+
+    /**
+     * Create the runtime wires for a reference binding
+     * 
+     * @param component
+     * @param reference
+     * @param binding
+     */
+    private void addReferenceWire(Component component, ComponentReference reference, Binding binding) {
+        if (!(reference instanceof RuntimeComponentReference)) {
+            return;
+        }
+
+        // create wire if binding has an endpoint
+        Component targetComponent = null;
+        ComponentService targetComponentService = null;
+        Binding targetBinding = null;
+        if (binding instanceof WireableBinding) {
+            WireableBinding endpoint = (WireableBinding)binding;
+            targetComponent = endpoint.getTargetComponent();
+            targetComponentService = endpoint.getTargetComponentService();
+            targetBinding = endpoint.getTargetBinding();
+        }
+
+        // create a forward wire, either static or dynamic
+        addReferenceWire(component, reference, binding, targetComponent, targetComponentService, targetBinding);
+
+        /*
+        // if static forward wire (not from self-reference), try to create a static callback wire 
+        if (targetComponentService != null && !reference.getName().startsWith("$self$.")) {
+            ComponentReference callbackReference = targetComponentService.getCallbackReference();
+            if (callbackReference != null) {
+                Binding callbackBinding = null;
+                Binding callbackServiceBinding = null;
+                // select a service callback binding that can be wired back to this component
+                for (Binding refBinding : callbackReference.getBindings()) {
+                    // first look for a callback binding whose name matches the target binding name
+                    if (refBinding.getName().equals(targetBinding.getName())) {
+                        callbackBinding = refBinding;
+                        break;
+                    }
+                }
+                // see if there is a matching reference callback binding 
+                if (callbackBinding != null) {
+                    callbackServiceBinding = reference.getCallbackService().getBinding(callbackBinding.getClass());
+                }
+                // if there isn't an end-to-end match, try again based on target binding type
+                if (callbackBinding == null || callbackServiceBinding == null) {
+                    callbackBinding = callbackReference.getBinding(targetBinding.getClass());
+                    if (callbackBinding != null) {
+                        callbackServiceBinding = reference.getCallbackService().getBinding(callbackBinding.getClass());
+                    }
+                }
+                if (callbackBinding != null && callbackServiceBinding != null) {
+                    // end-to-end match, so create a static callback wire as well as the static forward wire
+        
+                    addReferenceWire(targetComponent, callbackReference, callbackBinding, component, reference
+                        .getCallbackService(), callbackServiceBinding);
+                } else {
+                    // no end-to-end match, so do not create a static callback wire
+                }
+            }
+        }
+        */
+    }
+
+    /**
+     * Create a reference wire for a forward call or a callback
+     * @param reference
+     * @param service
+     * @param serviceBinding
+     * @param component
+     * @param referenceBinding
+     */
+    private RuntimeWire addReferenceWire(Component refComponent,
+                                         ComponentReference reference,
+                                         Binding refBinding,
+                                         Component serviceComponent,
+                                         ComponentService service,
+                                         Binding serviceBinding) {
+        RuntimeComponentReference runtimeRef = (RuntimeComponentReference)reference;
+        InterfaceContract bindingContract = getInterfaceContract(reference, refBinding);
+
+        // Use the interface contract of the reference on the component type
+        Reference componentTypeRef = reference.getReference();
+        InterfaceContract sourceContract =
+            componentTypeRef == null ? reference.getInterfaceContract() : componentTypeRef.getInterfaceContract();
+        sourceContract = sourceContract.makeUnidirectional(false);
+
+        EndpointReference wireSource =
+            new EndpointReferenceImpl((RuntimeComponent)refComponent, reference, refBinding, sourceContract);
+        ComponentService callbackService = reference.getCallbackService();
+        if (callbackService != null) {
+            // select a reference callback binding to pass with invocations on this wire
+            Binding callbackBinding = null;
+            for (Binding binding : callbackService.getBindings()) {
+                // first look for a callback binding whose name matches the reference binding name
+                if (binding.getName().equals(refBinding.getName()) || binding.getName()
+                    .equals(CALLBACK_PREFIX + refBinding.getName())) {
+                    callbackBinding = binding;
+                    break;
+                }
+            }
+            // if no callback binding found, try again based on reference binding type
+            if (callbackBinding == null) {
+                callbackBinding = callbackService.getBinding(refBinding.getClass());
+            }
+            InterfaceContract callbackContract = callbackService.getInterfaceContract();
+            EndpointReference callbackEndpoint =
+                new EndpointReferenceImpl((RuntimeComponent)refComponent, callbackService, callbackBinding,
+                                          callbackContract);
+            wireSource.setCallbackEndpoint(callbackEndpoint);
+        }
+
+        EndpointReference wireTarget =
+            new EndpointReferenceImpl((RuntimeComponent)serviceComponent, service, serviceBinding, bindingContract);
+
+        RuntimeWire wire =
+            new RuntimeWireImpl(wireSource, wireTarget, interfaceContractMapper, workScheduler, wireProcessor);
+        runtimeRef.getRuntimeWires().add(wire);
+
+        return wire;
+    }
+
+    private void addImplementationProvider(RuntimeComponent component, Implementation implementation) {
+        ImplementationProviderFactory providerFactory =
+            (ImplementationProviderFactory)providerFactories.getProviderFactory(implementation.getClass());
+        if (providerFactory != null) {
+            @SuppressWarnings("unchecked")
+            ImplementationProvider implementationProvider =
+                providerFactory.createImplementationProvider(component, implementation);
+            if (implementationProvider != null) {
+                component.setImplementationProvider(implementationProvider);
+            }
+        } else {
+            throw new IllegalStateException("Provider factory not found for class: " + implementation.getClass()
+                .getName());
+        }
+    }
+
+    private void removeImplementationProvider(RuntimeComponent component) {
+        component.setImplementationProvider(null);
+    }
+
+    /**
+     * @param component
+     * @param service
+     * @param binding
+     */
+    private void addServiceBindingProvider(RuntimeComponent component, RuntimeComponentService service, Binding binding) {
+        // REVIEW: Is this the right way to mark the binding as remote?
+        if ((binding instanceof WireableBinding) && (service.getInterfaceContract().getInterface().isRemotable())) {
+            WireableBinding wireableBinding = (WireableBinding)binding;
+            wireableBinding.setRemote(true);
+        }
+        BindingProviderFactory providerFactory =
+            (BindingProviderFactory)providerFactories.getProviderFactory(binding.getClass());
+        if (providerFactory != null) {
+            @SuppressWarnings("unchecked")
+            ServiceBindingProvider bindingProvider =
+                providerFactory.createServiceBindingProvider((RuntimeComponent)component,
+                                                             (RuntimeComponentService)service,
+                                                             binding);
+            if (bindingProvider != null) {
+                ((RuntimeComponentService)service).setBindingProvider(binding, bindingProvider);
+            }
+        } else {
+            throw new IllegalStateException("Provider factory not found for class: " + binding.getClass().getName());
+        }
+    }
+
+    private void removeServiceBindingProvider(RuntimeComponent component,
+                                              RuntimeComponentService service,
+                                              Binding binding) {
+        service.setBindingProvider(binding, null);
+    }
+
+    private void removeReferenceBindingProvider(RuntimeComponent component,
+                                                RuntimeComponentReference reference,
+                                                Binding binding) {
+        reference.setBindingProvider(binding, null);
+    }
+
+    public void start(Composite composite) {
+        for (Component component : composite.getComponents()) {
+            start(component);
+        }
+    }
+
+    public void stop(Composite composite) {
+        for (Component component : composite.getComponents()) {
+            stop(component);
+
+        }
+
+    }
+
+    public void start(Component component) {
+        RuntimeComponent runtimeComponent = ((RuntimeComponent)component);
+        configureComponentContext(runtimeComponent);
+
+        for (ComponentService service : component.getServices()) {
+            for (Binding binding : service.getBindings()) {
+                ServiceBindingProvider bindingProvider = ((RuntimeComponentService)service).getBindingProvider(binding);
+                if (bindingProvider != null) {
+                    bindingProvider.start();
+                }
+            }
+            //            for (RuntimeWire wire : ((RuntimeComponentService)service).getRuntimeWires()) {
+            //                wireProcessor.process(wire);
+            //            }
+        }
+
+        for (ComponentReference reference : component.getReferences()) {
+            ((RuntimeComponentReference)reference).setComponent(runtimeComponent);
+        }
+
+        Implementation implementation = component.getImplementation();
+        if (implementation instanceof Composite) {
+            start((Composite)implementation);
+        } else {
+            ImplementationProvider implementationProvider = runtimeComponent.getImplementationProvider();
+            if (implementationProvider != null) {
+                implementationProvider.start();
+            }
+        }
+
+        if (component instanceof ScopedRuntimeComponent) {
+            ScopedRuntimeComponent scopedRuntimeComponent = (ScopedRuntimeComponent)component;
+            if (scopedRuntimeComponent.getScopeContainer() != null) {
+                scopedRuntimeComponent.getScopeContainer().start();
+            }
+        }
+
+        runtimeComponent.setStarted(true);
+    }
+
+    /**
+     * @param runtimeComponent
+     */
+    public void configureComponentContext(RuntimeComponent runtimeComponent) {
+        RuntimeComponentContext componentContext =
+            new ComponentContextImpl(this, assemblyFactory, proxyFactory, interfaceContractMapper,
+                                     requestContextFactory, javaInterfaceFactory, runtimeComponent);
+        runtimeComponent.setComponentContext(componentContext);
+    }
+
+    /**
+     * Stop a component
+     */
+    public void stop(Component component) {
+        for (ComponentService service : component.getServices()) {
+            for (Binding binding : service.getBindings()) {
+                ServiceBindingProvider bindingProvider = ((RuntimeComponentService)service).getBindingProvider(binding);
+                if (bindingProvider != null) {
+                    bindingProvider.stop();
+                }
+            }
+        }
+        for (ComponentReference reference : component.getReferences()) {
+            for (Binding binding : reference.getBindings()) {
+                ReferenceBindingProvider bindingProvider =
+                    ((RuntimeComponentReference)reference).getBindingProvider(binding);
+                if (bindingProvider != null) {
+                    bindingProvider.stop();
+                }
+            }
+        }
+        Implementation implementation = component.getImplementation();
+        if (implementation instanceof Composite) {
+            stop((Composite)implementation);
+        } else {
+            ImplementationProvider implementationProvider = ((RuntimeComponent)component).getImplementationProvider();
+            if (implementationProvider != null) {
+                implementationProvider.stop();
+            }
+        }
+
+        if (component instanceof ScopedRuntimeComponent) {
+            ScopedRuntimeComponent runtimeComponent = (ScopedRuntimeComponent)component;
+            if (runtimeComponent.getScopeContainer() != null) {
+                runtimeComponent.getScopeContainer().stop();
+            }
+        }
+
+        ((RuntimeComponent)component).setStarted(false);
+    }
+
+    /**
+     * Get the effective interface contract for a reference binding
+     * 
+     * @param reference
+     * @param binding
+     * @return
+     */
+    private InterfaceContract getInterfaceContract(ComponentReference reference, Binding binding) {
+        InterfaceContract interfaceContract = reference.getInterfaceContract();
+        ReferenceBindingProvider provider = ((RuntimeComponentReference)reference).getBindingProvider(binding);
+        if (provider != null) {
+            InterfaceContract bindingContract = provider.getBindingInterfaceContract();
+            if (bindingContract != null) {
+                interfaceContract = bindingContract;
+            }
+        }
+        return interfaceContract.makeUnidirectional(false);
+    }
+
+    /**
+     * Remove the runtime wires for a reference binding
+     * @param reference
+     */
+    private void removeReferenceWires(ComponentReference reference) {
+        if (!(reference instanceof RuntimeComponentReference)) {
+            return;
+        }
+        // [rfeng] Comment out the following statements to avoid the on-demand activation
+        // RuntimeComponentReference runtimeRef = (RuntimeComponentReference)reference;
+        // runtimeRef.getRuntimeWires().clear();
+    }
+
+    /**
+     * Get the effective interface contract for the service binding
+     * 
+     * @param service
+     * @param binding
+     * @return
+     */
+    private InterfaceContract getInterfaceContract(ComponentService service, Binding binding) {
+        InterfaceContract interfaceContract = service.getInterfaceContract();
+
+        ServiceBindingProvider provider = ((RuntimeComponentService)service).getBindingProvider(binding);
+        if (provider != null) {
+            InterfaceContract bindingContract = provider.getBindingInterfaceContract();
+            if (bindingContract != null) {
+                interfaceContract = bindingContract;
+            }
+        }
+        return interfaceContract.makeUnidirectional(false);
+    }
+
+    /**
+     * Remove runtime wires for a service binding
+     * 
+     * @param component
+     * @param service
+     */
+    private void removeServiceWires(ComponentService service) {
+        if (!(service instanceof RuntimeComponentService)) {
+            return;
+        }
+        RuntimeComponentService runtimeService = (RuntimeComponentService)service;
+        runtimeService.getRuntimeWires().clear();
+    }
+
+    /**
+     * Create a service wire for a forward call or a callback
+     * @param service
+     * @param serviceBinding
+     * @param reference
+     * @param component
+     * @param referenceBinding
+     */
+    private RuntimeWire addServiceWire(Component serviceComponent, ComponentService service, Binding serviceBinding) {
+        if (!(service instanceof RuntimeComponentService)) {
+            return null;
+        }
+        RuntimeComponentService runtimeService = (RuntimeComponentService)service;
+
+        // FIXME: [rfeng] We might need a better way to get the impl interface contract
+        Service targetService = service.getService();
+        if (targetService == null) {
+            targetService = service;
+        }
+        InterfaceContract targetContract = targetService.getInterfaceContract().makeUnidirectional(false);
+
+        InterfaceContract sourceContract = getInterfaceContract(service, serviceBinding);
+
+        EndpointReference wireSource = new EndpointReferenceImpl(null, null, serviceBinding, sourceContract);
+
+        EndpointReference wireTarget =
+            new EndpointReferenceImpl((RuntimeComponent)serviceComponent, (RuntimeComponentService)service,
+                                      serviceBinding, targetContract);
+
+        RuntimeWire wire =
+            new RuntimeWireImpl(wireSource, wireTarget, interfaceContractMapper, workScheduler, wireProcessor);
+        runtimeService.getRuntimeWires().add(wire);
+
+        return wire;
+    }
+
+    public void activate(RuntimeComponent component, RuntimeComponentService service) {
+        for (Binding binding : service.getBindings()) {
+            addServiceBindingProvider(component, service, binding);
+            addServiceWire(component, service, binding);
+        }
+    }
+
+    public void deactivate(RuntimeComponent component, RuntimeComponentService service) {
+        removeServiceWires(service);
+        for (Binding binding : service.getBindings()) {
+            removeServiceBindingProvider(component, service, binding);
+        }
+    }
+
+    private void addScopeContainer(Component component) {
+        if (!(component instanceof ScopedRuntimeComponent)) {
+            return;
+        }
+        ScopedRuntimeComponent runtimeComponent = (ScopedRuntimeComponent)component;
+        runtimeComponent.setScopeContainer(scopeRegistry.getScopeContainer(runtimeComponent));
+    }
+
+    private void removeScopeContainer(Component component) {
+        if (!(component instanceof ScopedRuntimeComponent)) {
+            return;
+        }
+        ScopedRuntimeComponent runtimeComponent = (ScopedRuntimeComponent)component;
+        runtimeComponent.setScopeContainer(null);
+    }
+
+    public void activate(Composite composite) throws ActivationException {
+        try {
+            for (Component component : composite.getComponents()) {
+
+                Implementation implementation = component.getImplementation();
+                if (implementation instanceof Composite) {
+                    activate((Composite)implementation);
+                } else if (implementation != null) {
+                    addImplementationProvider((RuntimeComponent)component, implementation);
+                    addScopeContainer(component);
+                }
+
+                for (ComponentService service : component.getServices()) {
+                    activate((RuntimeComponent)component, (RuntimeComponentService)service);
+                }
+            }
+        } catch (Exception e) {
+            throw new ActivationException(e);
+        }
+    }
+
+    public void deactivate(Composite composite) throws ActivationException {
+        try {
+            for (Component component : composite.getComponents()) {
+                for (ComponentService service : component.getServices()) {
+                    deactivate((RuntimeComponent)component, (RuntimeComponentService)service);
+                }
+
+                for (ComponentReference reference : component.getReferences()) {
+                    deactivate((RuntimeComponent)component, (RuntimeComponentReference)reference);
+                }
+
+                Implementation implementation = component.getImplementation();
+                if (implementation instanceof Composite) {
+                    deactivate((Composite)implementation);
+                } else if (implementation != null) {
+                    removeImplementationProvider((RuntimeComponent)component);
+                    removeScopeContainer(component);
+                }
+            }
+        } catch (Exception e) {
+            throw new ActivationException(e);
+        }
+    }
+
+    /**
+     * @return the referenceHelper
+     */
+    public ComponentContextHelper getComponentContextHelper() {
+        return componentContextHelper;
+    }
+
+    /**
+     * @return the proxyFactory
+     */
+    public ProxyFactory getProxyFactory() {
+        return proxyFactory;
+    }
+
+    /**
+     * @return the domainComposite
+     */
+    public Composite getDomainComposite() {
+        return domainComposite;
+    }
+
+    /**
+     * @param domainComposite the domainComposite to set
+     */
+    public void setDomainComposite(Composite domainComposite) {
+        this.domainComposite = domainComposite;
+    }
+
+    public Component resolve(String componentURI) {
+        for (Composite composite : domainComposite.getIncludes()) {
+            Component component = resolve(composite, componentURI);
+            if (component != null) {
+                return component;
+            }
+        }
+        return null;
+    }
+
+    public Component resolve(Composite composite, String componentURI) {
+        String prefix = componentURI + "/";
+        for (Component component : composite.getComponents()) {
+            String uri = component.getURI();
+            if (uri.equals(componentURI)) {
+                return component;
+            }
+            if (componentURI.startsWith(prefix)) {
+                Implementation implementation = component.getImplementation();
+                if (!(implementation instanceof Composite)) {
+                    return null;
+                }
+                return resolve((Composite)implementation, componentURI);
+            }
+        }
+        return null;
+    }
+
+    /**
+     * @return the javaInterfaceFactory
+     */
+    public JavaInterfaceFactory getJavaInterfaceFactory() {
+        return javaInterfaceFactory;
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/EndpointReferenceImpl.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/EndpointReferenceImpl.java
new file mode 100644
index 0000000000..da825dc37a
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/EndpointReferenceImpl.java
@@ -0,0 +1,146 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.core.assembly;
+
+import org.apache.tuscany.sca.assembly.Binding;
+import org.apache.tuscany.sca.assembly.Contract;
+import org.apache.tuscany.sca.interfacedef.InterfaceContract;
+import org.apache.tuscany.sca.runtime.EndpointReference;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+
+/**
+ * @version $Rev$ $Date$
+ */
+public class EndpointReferenceImpl implements EndpointReference {
+    private RuntimeComponent component;
+    private Contract contract;
+    private Binding binding;
+    private InterfaceContract interfaceContract;
+    private String uri;
+    private EndpointReference callbackEndpoint;
+
+    /**
+     * @param component
+     * @param contract
+     * @param binding
+     * @param interfaceContract
+     */
+    public EndpointReferenceImpl(RuntimeComponent component,
+                                 Contract contract,
+                                 Binding binding,
+                                 InterfaceContract interfaceContract) {
+        super();
+        this.component = component;
+        this.contract = contract;
+        this.binding = binding;
+        this.interfaceContract = interfaceContract;
+        this.uri = (component != null ? component.getName() : "") + '/' +
+                   (contract != null ? contract.getName() : "");
+    }
+
+    /**
+     * @param uri
+     */
+    public EndpointReferenceImpl(String uri) {
+        super();
+        this.uri = uri;
+    }
+
+    public Binding getBinding() {
+        return binding;
+    }
+
+    public void setBinding(Binding binding) {
+        this.binding = binding;
+    }
+
+    public RuntimeComponent getComponent() {
+        return component;
+    }
+
+    public void setComponent(RuntimeComponent component) {
+        this.component = component;
+    }
+
+    public Contract getContract() {
+        return contract;
+    }
+
+    public void setContract(Contract contract) {
+        this.contract = contract;
+    }
+
+    public InterfaceContract getInterfaceContract() {
+        return interfaceContract;
+    }
+
+    public void setInterfaceContract(InterfaceContract interfaceContract) {
+        this.interfaceContract = interfaceContract;
+    }
+
+    public String getURI() {
+        return uri;
+    }
+
+    public void setURI(String uri) {
+        this.uri = uri;
+    }
+
+    public EndpointReference getCallbackEndpoint() {
+        return callbackEndpoint;
+    }
+
+    public void setCallbackEndpoint(EndpointReference callbackEndpoint) {
+        this.callbackEndpoint = callbackEndpoint;
+    }
+
+    @Override
+    public int hashCode() {
+        final int PRIME = 31;
+        int result = 1;
+        result = PRIME * result + ((uri == null) ? 0 : uri.hashCode());
+        return result;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj)
+            return true;
+        if (obj == null)
+            return false;
+        if (getClass() != obj.getClass())
+            return false;
+        final EndpointReferenceImpl other = (EndpointReferenceImpl)obj;
+        if (uri == null) {
+            if (other.uri != null)
+                return false;
+        } else if (!uri.equals(other.uri))
+            return false;
+        return true;
+    }
+
+    /**
+     * @see java.lang.Object#clone()
+     */
+    @Override
+    public Object clone() throws CloneNotSupportedException {
+        return super.clone();
+    }
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/RuntimeAssemblyFactory.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/RuntimeAssemblyFactory.java
new file mode 100644
index 0000000000..ee52c27d14
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/RuntimeAssemblyFactory.java
@@ -0,0 +1,61 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.core.assembly;
+
+import org.apache.tuscany.sca.assembly.AssemblyFactory;
+import org.apache.tuscany.sca.assembly.Component;
+import org.apache.tuscany.sca.assembly.ComponentReference;
+import org.apache.tuscany.sca.assembly.ComponentService;
+import org.apache.tuscany.sca.assembly.DefaultAssemblyFactory;
+import org.apache.tuscany.sca.core.invocation.ProxyFactory;
+import org.apache.tuscany.sca.interfacedef.InterfaceContractMapper;
+
+/**
+ * @version $Rev$ $Date$
+ */
+public class RuntimeAssemblyFactory extends DefaultAssemblyFactory implements AssemblyFactory {
+    private final ProxyFactory proxyFactory;
+    private final InterfaceContractMapper interfaceContractMapper;
+    
+    /**
+     * @param proxyFactory
+     */
+    public RuntimeAssemblyFactory(InterfaceContractMapper interfaceContractMapper, ProxyFactory proxyFactory) {
+        super();
+        this.proxyFactory = proxyFactory;
+        this.interfaceContractMapper = interfaceContractMapper;
+    }
+
+    @Override
+    public Component createComponent() {
+        return new RuntimeComponentImpl(proxyFactory);
+    }
+
+    @Override
+    public ComponentReference createComponentReference() {
+        return new RuntimeComponentReferenceImpl(interfaceContractMapper);
+    }
+
+    @Override
+    public ComponentService createComponentService() {
+        return new RuntimeComponentServiceImpl(interfaceContractMapper);
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/RuntimeComponentImpl.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/RuntimeComponentImpl.java
new file mode 100644
index 0000000000..cde9cbb18c
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/RuntimeComponentImpl.java
@@ -0,0 +1,85 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.core.assembly;
+
+import org.apache.tuscany.sca.assembly.impl.ComponentImpl;
+import org.apache.tuscany.sca.core.invocation.ProxyFactory;
+import org.apache.tuscany.sca.core.scope.ScopeContainer;
+import org.apache.tuscany.sca.core.scope.ScopedRuntimeComponent;
+import org.apache.tuscany.sca.provider.ImplementationProvider;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+import org.apache.tuscany.sca.runtime.RuntimeComponentContext;
+
+/**
+ * @version $Rev$ $Date$
+ */
+public class RuntimeComponentImpl extends ComponentImpl implements RuntimeComponent, ScopedRuntimeComponent {
+    protected RuntimeComponentContext componentContext;
+    protected ImplementationProvider implementationProvider;
+    protected ProxyFactory proxyService;
+    protected ScopeContainer scopeContainer;
+    protected boolean started;
+
+    /**
+     * @param proxyService
+     */
+    public RuntimeComponentImpl(ProxyFactory proxyService) {
+        super();
+        this.proxyService = proxyService;
+    }
+
+    public ImplementationProvider getImplementationProvider() {
+        return implementationProvider;
+    }
+
+    public void setImplementationProvider(ImplementationProvider provider) {
+        this.implementationProvider = provider;
+    }
+
+    public ScopeContainer getScopeContainer() {
+        return scopeContainer;
+    }
+
+    public void setScopeContainer(ScopeContainer scopeContainer) {
+        this.scopeContainer = scopeContainer;
+    }
+    
+    public boolean isStarted() {
+        return started;
+    }
+
+    public void setStarted(boolean started) {
+        this.started = started;
+    }
+
+    /**
+     * @return the componentContext
+     */
+    public RuntimeComponentContext getComponentContext() {
+        return componentContext;
+    }
+
+    /**
+     * @param componentContext the componentContext to set
+     */
+    public void setComponentContext(RuntimeComponentContext componentContext) {
+        this.componentContext = componentContext;
+    }
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/RuntimeComponentReferenceImpl.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/RuntimeComponentReferenceImpl.java
new file mode 100644
index 0000000000..5ad339b76d
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/RuntimeComponentReferenceImpl.java
@@ -0,0 +1,114 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.core.assembly;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import org.apache.tuscany.sca.assembly.Binding;
+import org.apache.tuscany.sca.assembly.impl.ComponentReferenceImpl;
+import org.apache.tuscany.sca.interfacedef.InterfaceContractMapper;
+import org.apache.tuscany.sca.interfacedef.Operation;
+import org.apache.tuscany.sca.invocation.InvocationChain;
+import org.apache.tuscany.sca.invocation.Invoker;
+import org.apache.tuscany.sca.provider.ReferenceBindingProvider;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+import org.apache.tuscany.sca.runtime.RuntimeComponentReference;
+import org.apache.tuscany.sca.runtime.RuntimeWire;
+
+public class RuntimeComponentReferenceImpl extends ComponentReferenceImpl implements RuntimeComponentReference {
+    private List<RuntimeWire> wires;
+    private Map<Binding, ReferenceBindingProvider> bindingProviders = new HashMap<Binding, ReferenceBindingProvider>();
+    private InterfaceContractMapper mapper;
+
+    private RuntimeComponent component;
+
+    public RuntimeComponentReferenceImpl(InterfaceContractMapper mapper) {
+        super();
+        this.mapper = mapper;
+    }
+
+    public synchronized List<RuntimeWire> getRuntimeWires() {
+        if (wires == null) {
+            wires = new ArrayList<RuntimeWire>();
+            component.getComponentContext().activate(this);
+        }
+        return wires;
+    }
+
+    public RuntimeWire getRuntimeWire(Binding binding) {
+        for (RuntimeWire wire : getRuntimeWires()) {
+            if (wire.getSource().getBinding() == binding) {
+                return wire;
+            }
+        }
+        return null;
+    }
+
+    public ReferenceBindingProvider getBindingProvider(Binding binding) {
+        return bindingProviders.get(binding);
+    }
+
+    public void setBindingProvider(Binding binding, ReferenceBindingProvider bindingProvider) {
+        bindingProviders.put(binding, bindingProvider);
+    }
+
+    public Invoker getInvoker(Binding binding, Operation operation) {
+        RuntimeWire wire = getRuntimeWire(binding);
+        if (wire == null) {
+            return null;
+        }
+        for (InvocationChain chain : wire.getInvocationChains()) {
+            Operation op = chain.getSourceOperation();
+            if (mapper.isCompatible(operation, op, op.getInterface().isRemotable())) {
+                return chain.getHeadInvoker();
+            }
+        }
+        return null;
+    }
+
+    /**
+     * @return the component
+     */
+    public RuntimeComponent getComponent() {
+        return component;
+    }
+
+    /**
+     * @param component the component to set
+     */
+    public void setComponent(RuntimeComponent component) {
+        this.component = component;
+    }
+
+    /**
+     * @see org.apache.tuscany.sca.assembly.impl.ComponentReferenceImpl#clone()
+     */
+    @Override
+    public Object clone() throws CloneNotSupportedException {
+        RuntimeComponentReferenceImpl ref = (RuntimeComponentReferenceImpl) super.clone();
+        ref.wires = null;
+        ref.bindingProviders = new HashMap<Binding, ReferenceBindingProvider>();
+        return ref;
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/RuntimeComponentServiceImpl.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/RuntimeComponentServiceImpl.java
new file mode 100644
index 0000000000..d86e810096
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/RuntimeComponentServiceImpl.java
@@ -0,0 +1,127 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.core.assembly;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import org.apache.tuscany.sca.assembly.Binding;
+import org.apache.tuscany.sca.assembly.impl.ComponentServiceImpl;
+import org.apache.tuscany.sca.interfacedef.InterfaceContract;
+import org.apache.tuscany.sca.interfacedef.InterfaceContractMapper;
+import org.apache.tuscany.sca.interfacedef.Operation;
+import org.apache.tuscany.sca.invocation.InvocationChain;
+import org.apache.tuscany.sca.invocation.Invoker;
+import org.apache.tuscany.sca.provider.ServiceBindingProvider;
+import org.apache.tuscany.sca.runtime.RuntimeComponentService;
+import org.apache.tuscany.sca.runtime.RuntimeWire;
+import org.osoa.sca.ServiceRuntimeException;
+
+public class RuntimeComponentServiceImpl extends ComponentServiceImpl implements RuntimeComponentService {
+    private InterfaceContractMapper mapper;
+    private List<RuntimeWire> wires = new ArrayList<RuntimeWire>();
+    private List<RuntimeWire> callbackWires = new ArrayList<RuntimeWire>();
+    private Map<Binding, ServiceBindingProvider> bindingProviders = new HashMap<Binding, ServiceBindingProvider>();
+
+    public RuntimeComponentServiceImpl(InterfaceContractMapper mapper) {
+        super();
+        this.mapper = mapper;
+    }
+
+    public List<RuntimeWire> getRuntimeWires() {
+        return wires;
+    }
+
+    public RuntimeWire getRuntimeWire(Binding binding) {
+        for (RuntimeWire wire : wires) {
+            if (wire.getTarget().getBinding() == binding) {
+                return wire;
+            }
+        }
+        return null;
+    }
+
+    public List<RuntimeWire> getCallbackWires() {
+        return callbackWires;
+    }
+
+    public ServiceBindingProvider getBindingProvider(Binding binding) {
+        return bindingProviders.get(binding);
+    }
+
+    public void setBindingProvider(Binding binding, ServiceBindingProvider bindingProvider) {
+        bindingProviders.put(binding, bindingProvider);
+    }
+
+    public Invoker getInvoker(Binding binding, Operation operation) {
+        return getInvoker(binding, null, operation);
+    }
+
+    public Invoker getInvoker(Binding binding, InterfaceContract interfaceContract, Operation operation) {
+        InvocationChain chain = getInvocationChain(binding, interfaceContract, operation);
+        if (chain != null) {
+            return chain.getHeadInvoker();
+        } else {
+            return null;
+        }
+    }
+
+    public InvocationChain getInvocationChain(Binding binding, InterfaceContract interfaceContract, Operation operation) {
+        RuntimeWire wire = getRuntimeWire(binding);
+        if (wire == null) {
+            return null;
+        }
+        if (interfaceContract != null && interfaceContract != wire.getSource().getInterfaceContract()) {
+            try {
+                wire = (RuntimeWire)wire.clone();
+                wire.getSource().setInterfaceContract(interfaceContract);
+            } catch (CloneNotSupportedException e) {
+                throw new ServiceRuntimeException(e);
+            }
+        }
+        for (InvocationChain chain : wire.getInvocationChains()) {
+            Operation op = chain.getTargetOperation();
+            if (mapper.isCompatible(operation, op, op.getInterface().isRemotable())) {
+                return chain;
+            }
+        }
+        return null;
+    }
+
+    public InvocationChain getInvocationChain(Binding binding, Operation operation) {
+        return getInvocationChain(binding, null, operation);
+    }
+
+    /**
+     * @see org.apache.tuscany.sca.assembly.impl.ComponentServiceImpl#clone()
+     */
+    @SuppressWarnings("unchecked")
+    @Override
+    public Object clone() throws CloneNotSupportedException {
+        RuntimeComponentServiceImpl clone = (RuntimeComponentServiceImpl)super.clone();
+        clone.bindingProviders =
+            (Map<Binding, ServiceBindingProvider>)((HashMap<Binding, ServiceBindingProvider>)bindingProviders).clone();
+        clone.wires = (List<RuntimeWire>)((ArrayList<RuntimeWire>)wires).clone();
+        clone.callbackWires = (List<RuntimeWire>)((ArrayList<RuntimeWire>)callbackWires).clone();
+        return clone;
+    }
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/RuntimeWireImpl.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/RuntimeWireImpl.java
new file mode 100644
index 0000000000..9a8635ddb0
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/RuntimeWireImpl.java
@@ -0,0 +1,224 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.core.assembly;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.tuscany.sca.assembly.Binding;
+import org.apache.tuscany.sca.assembly.Component;
+import org.apache.tuscany.sca.assembly.ComponentReference;
+import org.apache.tuscany.sca.assembly.ComponentService;
+import org.apache.tuscany.sca.assembly.Contract;
+import org.apache.tuscany.sca.core.invocation.InvocationChainImpl;
+import org.apache.tuscany.sca.core.invocation.NonBlockingInterceptor;
+import org.apache.tuscany.sca.interfacedef.InterfaceContract;
+import org.apache.tuscany.sca.interfacedef.InterfaceContractMapper;
+import org.apache.tuscany.sca.interfacedef.Operation;
+import org.apache.tuscany.sca.invocation.InvocationChain;
+import org.apache.tuscany.sca.invocation.Invoker;
+import org.apache.tuscany.sca.provider.ImplementationProvider;
+import org.apache.tuscany.sca.provider.ReferenceBindingProvider;
+import org.apache.tuscany.sca.provider.ReferenceBindingProvider2;
+import org.apache.tuscany.sca.runtime.EndpointReference;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+import org.apache.tuscany.sca.runtime.RuntimeComponentReference;
+import org.apache.tuscany.sca.runtime.RuntimeComponentService;
+import org.apache.tuscany.sca.runtime.RuntimeWire;
+import org.apache.tuscany.sca.runtime.RuntimeWireProcessor;
+import org.apache.tuscany.sca.work.WorkScheduler;
+
+/**
+ * @version $Rev$ $Date$
+ */
+public class RuntimeWireImpl implements RuntimeWire {
+    private EndpointReference wireSource;
+    private EndpointReference wireTarget;
+
+    private transient RuntimeWireProcessor wireProcessor;
+    private transient InterfaceContractMapper interfaceContractMapper;
+    private transient WorkScheduler workScheduler;
+
+    private List<InvocationChain> chains;
+
+    /**
+     * @param source
+     * @param target
+     * @param interfaceContractMapper 
+     * @param workScheduler 
+     * @param wireProcessor 
+     */
+    public RuntimeWireImpl(EndpointReference source,
+                           EndpointReference target,
+                           InterfaceContractMapper interfaceContractMapper,
+                           WorkScheduler workScheduler,
+                           RuntimeWireProcessor wireProcessor) {
+        super();
+        this.wireSource = source;
+        this.wireTarget = target;
+        this.interfaceContractMapper = interfaceContractMapper;
+        this.workScheduler = workScheduler;
+        this.wireProcessor = wireProcessor;
+    }
+
+    public synchronized List<InvocationChain> getInvocationChains() {
+        if (chains == null) {
+            initInvocationChains();
+        }
+        return chains;
+    }
+
+    /**
+     * Initialize the invocation chains
+     */
+    private void initInvocationChains() {
+        chains = new ArrayList<InvocationChain>();
+        InterfaceContract sourceContract = wireSource.getInterfaceContract();
+        InterfaceContract targetContract = wireTarget.getInterfaceContract();
+
+        Contract source = wireSource.getContract();
+        if (source instanceof RuntimeComponentReference) {
+            // It's the reference wire
+            RuntimeComponentReference reference = (RuntimeComponentReference)wireSource.getContract();
+            Binding refBinding = wireSource.getBinding();
+            for (Operation operation : sourceContract.getInterface().getOperations()) {
+                Operation targetOperation = interfaceContractMapper.map(targetContract.getInterface(), operation);
+                InvocationChain chain = new InvocationChainImpl(operation, targetOperation);
+                if (operation.isNonBlocking()) {
+                    addNonBlockingInterceptor(reference, refBinding, chain);
+                }
+                addBindingInterceptor(reference, refBinding, chain, operation);
+                chains.add(chain);
+            }
+        } else {
+            // It's the service wire
+            RuntimeComponentService service = (RuntimeComponentService)wireTarget.getContract();
+            RuntimeComponent serviceComponent = wireTarget.getComponent();
+            for (Operation operation : sourceContract.getInterface().getOperations()) {
+                Operation targetOperation = interfaceContractMapper.map(targetContract.getInterface(), operation);
+                InvocationChain chain = new InvocationChainImpl(operation, targetOperation);
+                addImplementationInterceptor(serviceComponent, service, chain, targetOperation);
+                chains.add(chain);
+            }
+        }
+        wireProcessor.process(this);
+    }
+
+    public EndpointReference getSource() {
+        return wireSource;
+    }
+
+    public EndpointReference getTarget() {
+        return wireTarget;
+    }
+    
+    public void setTarget(EndpointReference target) {
+        this.wireTarget = target;
+        this.chains = null;
+    }
+
+    /**
+     * Add the interceptor for a binding
+     * 
+     * @param reference
+     * @param binding
+     * @param chain
+     * @param operation
+     */
+    private void addBindingInterceptor(ComponentReference reference,
+                                       Binding binding,
+                                       InvocationChain chain,
+                                       Operation operation) {
+        try {
+            ReferenceBindingProvider provider = ((RuntimeComponentReference)reference).getBindingProvider(binding);
+            if (provider != null) {
+                Invoker invoker = null;
+                if (provider instanceof ReferenceBindingProvider2) {
+                    invoker = ((ReferenceBindingProvider2)provider).createInvoker(operation);
+                } else {
+                    // must be an old provider that only has the deprecated signature
+                    invoker = provider.createInvoker(operation, false);
+                }
+                if (invoker != null) {
+                    chain.addInvoker(invoker);
+                }
+            }
+        } catch (RuntimeException e) {
+            // TODO: [rfeng] Ignore the self reference if a runtime exception happens
+            if (!reference.getName().startsWith("$self$.")) {
+                throw e;
+            }
+        }
+    }
+
+    /**
+     * Add a non-blocking interceptor if the reference binding needs it
+     * 
+     * @param reference
+     * @param binding
+     * @param chain
+     */
+    private void addNonBlockingInterceptor(ComponentReference reference, Binding binding, InvocationChain chain) {
+        ReferenceBindingProvider provider = ((RuntimeComponentReference)reference).getBindingProvider(binding);
+        if (provider != null) {
+            boolean supportsAsyncOneWayInvocation = false;
+            if (provider instanceof ReferenceBindingProvider2) {
+                supportsAsyncOneWayInvocation = ((ReferenceBindingProvider2)provider).supportsAsyncOneWayInvocation();
+            } else {
+                // must be an old provider that doesn't have this method
+            }
+            if (!supportsAsyncOneWayInvocation) {
+                chain.addInterceptor(new NonBlockingInterceptor(workScheduler));
+            }
+        }
+    }
+
+    /**
+     * Add the interceptor for a component implementation
+     * 
+     * @param component
+     * @param service
+     * @param chain
+     * @param operation
+     */
+    private void addImplementationInterceptor(Component component,
+                                              ComponentService service,
+                                              InvocationChain chain,
+                                              Operation operation) {
+        ImplementationProvider provider = ((RuntimeComponent)component).getImplementationProvider();
+        if (provider != null) {
+            Invoker invoker = null;
+            invoker = provider.createInvoker((RuntimeComponentService)service, operation);
+            chain.addInvoker(invoker);
+        }
+    }
+
+    /**
+     * @see java.lang.Object#clone()
+     */
+    @Override
+    public Object clone() throws CloneNotSupportedException {
+        RuntimeWireImpl copy =(RuntimeWireImpl) super.clone();
+        copy.wireSource = (EndpointReference) wireSource.clone();
+        copy.wireTarget = (EndpointReference) wireTarget.clone();
+        copy.chains = null;
+        return copy;
+    }
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/context/CallableReferenceImpl.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/context/CallableReferenceImpl.java
new file mode 100644
index 0000000000..95691c22d0
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/context/CallableReferenceImpl.java
@@ -0,0 +1,325 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.context;
+
+import java.io.Externalizable;
+import java.io.IOException;
+import java.io.ObjectInput;
+import java.io.ObjectOutput;
+import java.net.URI;
+import java.util.StringTokenizer;
+import java.util.UUID;
+
+import org.apache.tuscany.sca.assembly.Binding;
+import org.apache.tuscany.sca.assembly.Component;
+import org.apache.tuscany.sca.assembly.ComponentService;
+import org.apache.tuscany.sca.assembly.SCABinding;
+import org.apache.tuscany.sca.assembly.WireableBinding;
+import org.apache.tuscany.sca.core.assembly.CompositeActivator;
+import org.apache.tuscany.sca.core.assembly.CompositeActivatorImpl;
+import org.apache.tuscany.sca.core.assembly.EndpointReferenceImpl;
+import org.apache.tuscany.sca.core.factory.ObjectCreationException;
+import org.apache.tuscany.sca.core.factory.ObjectFactory;
+import org.apache.tuscany.sca.core.invocation.ProxyFactory;
+import org.apache.tuscany.sca.interfacedef.Interface;
+import org.apache.tuscany.sca.interfacedef.InterfaceContract;
+import org.apache.tuscany.sca.interfacedef.java.JavaInterface;
+import org.apache.tuscany.sca.runtime.EndpointReference;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+import org.apache.tuscany.sca.runtime.RuntimeComponentReference;
+import org.apache.tuscany.sca.runtime.RuntimeWire;
+import org.osoa.sca.CallableReference;
+import org.osoa.sca.Conversation;
+import org.osoa.sca.ServiceRuntimeException;
+
+/**
+ * Base class for implementations of service and callback references.
+ * 
+ * @version $Rev$ $Date$
+ * @param <B> the type of the business interface
+ */
+public class CallableReferenceImpl<B> implements CallableReference<B>, Externalizable, ObjectFactory<B> {
+    protected transient CompositeActivator compositeActivator;
+    protected transient ProxyFactory proxyFactory;
+
+    protected transient Class<B> businessInterface;
+
+    // if the wire targets a conversational service this holds the conversation state 
+    protected transient ConversationImpl conversation;
+
+    protected transient RuntimeComponent component;
+    protected transient RuntimeComponentReference reference;
+    protected transient Binding binding;
+
+    protected String componentURI; //The URI of the owning component
+    protected Object conversationID; // The conversationID should be serializable
+    protected Object callbackID; // The callbackID should be serializable
+
+    protected String scdl;
+
+    protected CallableReferenceImpl() {
+        super();
+    }
+
+    protected CallableReferenceImpl(Class<B> businessInterface,
+                                    RuntimeComponent component,
+                                    RuntimeComponentReference reference,
+                                    Binding binding,
+                                    ProxyFactory proxyFactory,
+                                    CompositeActivator compositeActivator) {
+        this.proxyFactory = proxyFactory;
+        this.businessInterface = businessInterface;
+        this.component = component;
+        this.reference = reference;
+        this.binding = binding;
+        // FIXME: The SCA spec is not clear how we should handle multiplicty for CallableReference
+        if (this.binding == null) {
+            this.binding = this.reference.getBinding(SCABinding.class);
+            if (this.binding == null) {
+                this.binding = this.reference.getBindings().get(0);
+            }
+        }
+        
+        // FIXME: Should we normalize the componentName/serviceName URI into an absolute SCA URI in the SCA binding?
+        // sca:component1/component11/component112/service1?
+        String componentURI = component.getURI(); // The target will be relative to this base URI
+        this.componentURI = componentURI;
+        this.compositeActivator = compositeActivator;
+        RuntimeWire wire = this.reference.getRuntimeWire(this.binding);
+        init(wire);
+    }
+
+    public CallableReferenceImpl(Class<B> businessInterface, RuntimeWire wire, ProxyFactory proxyFactory) {
+        this.proxyFactory = proxyFactory;
+        this.businessInterface = businessInterface;
+        bind(wire);
+    }
+
+    public RuntimeWire getRuntimeWire() {
+        return reference.getRuntimeWire(binding);
+    }
+    
+    protected void bind(RuntimeWire wire) {
+        if (wire != null) {
+            this.component = wire.getSource().getComponent();
+            this.reference = (RuntimeComponentReference)wire.getSource().getContract();
+            this.binding = wire.getSource().getBinding();
+            this.componentURI = component.getURI();
+            this.compositeActivator = ((ComponentContextImpl)component.getComponentContext()).getCompositeActivator();
+            init(wire);
+        }        
+    }
+    
+    protected void init(RuntimeWire wire) {
+        EndpointReference target = wire.getTarget();
+
+        // look to see if the target is conversational and if so create a conversation
+        InterfaceContract contract = target.getInterfaceContract();
+        if (contract == null) {
+            contract = reference.getInterfaceContract();
+        }
+        Interface contractInterface = contract.getInterface();
+
+        if (contractInterface != null && contractInterface.isConversational()) {
+            conversation = new ConversationImpl();
+        }
+
+        if (contract.getCallbackInterface() != null) {
+            this.callbackID = createCallbackID();
+        }
+    }
+
+    public B getInstance() throws ObjectCreationException {
+        try {
+            resolve();
+            return businessInterface.cast(proxyFactory.createProxy(this));
+        } catch (Exception e) {
+            throw new ObjectCreationException(e);
+        }
+    }
+
+    public B getService() {
+        try {
+            return getInstance();
+        } catch (Exception e) {
+            throw new ServiceRuntimeException(e);
+        }
+    }
+
+    public Class<B> getBusinessInterface() {
+        return businessInterface;
+    }
+
+    public boolean isConversational() {
+        return getConversation() != null;
+    }
+
+    public Conversation getConversation() {
+        return conversation;
+    }
+
+    public Object getCallbackID() {
+        return callbackID;
+    }
+
+    public EndpointReference getEndpointReference() {
+        return new EndpointReferenceImpl(component, reference, binding, reference.getInterfaceContract());
+    }
+
+    /**
+     * @see java.io.Externalizable#readExternal(java.io.ObjectInput)
+     */
+    public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
+        this.scdl = in.readUTF();
+        // resolve();
+
+        String uri = in.readUTF();
+        int index = uri.indexOf('?');
+        if (index == -1) {
+            componentURI = uri;
+        } else {
+            componentURI = uri.substring(0, index);
+            String query = uri.substring(index);
+            StringTokenizer tokenizer = new StringTokenizer(query, "&");
+            while (tokenizer.hasMoreTokens()) {
+                String attr = tokenizer.nextToken();
+                String pair[] = attr.split("=");
+                if (pair[0].equals("sca.conversationID")) {
+                    this.conversationID = pair[1];
+                } else if (pair[0].equals("sca.callbackID")) {
+                    this.callbackID = pair[1];
+                }
+            }
+        }
+    }
+
+    /**
+     * @throws IOException
+     */
+    private synchronized void resolve() throws Exception {
+        if (scdl != null && component == null && reference == null) {
+            ComponentContextHelper componentContextHelper = ComponentContextHelper.getCurrentComponentContextHelper();
+            if (componentContextHelper != null) {
+                CompositeActivator currentActivator = ComponentContextHelper.getCurrentCompositeActivator();
+                this.compositeActivator = currentActivator;
+                Component c = componentContextHelper.fromXML(scdl);
+                this.component = (RuntimeComponent)c;
+                currentActivator.configureComponentContext(this.component);
+                this.reference = (RuntimeComponentReference)c.getReferences().get(0);
+                this.reference.setComponent(this.component);
+                URI uri = URI.create("/" + componentURI);
+                for (Binding binding : reference.getBindings()) {
+                    if (binding instanceof WireableBinding) {
+                        String targetURI = uri.resolve(binding.getURI()).toString();
+                        int index = targetURI.lastIndexOf('/');
+                        String serviceName = targetURI.substring(index + 1);
+                        targetURI = targetURI.substring(1, index);
+                        Component targetComponet = compositeActivator.resolve(targetURI);
+                        ComponentService targetService = null;
+                        if (targetComponet != null) {
+                            if ("".equals(serviceName)) {
+                                targetService = ComponentContextHelper.getSingleService(targetComponet);
+                            } else {
+                                for (ComponentService service : targetComponet.getServices()) {
+                                    if (service.getName().equals(serviceName)) {
+                                        targetService = service;
+                                        break;
+                                    }
+                                }
+                            }
+                        }
+                        WireableBinding wireableBinding = (WireableBinding)binding;
+                        wireableBinding.setTargetComponent(targetComponet);
+                        wireableBinding.setTargetComponentService(targetService);
+                        if (targetService != null) {
+                            for (Binding serviceBinding : targetService.getBindings()) {
+                                if (serviceBinding.getClass() == binding.getClass()) {
+                                    wireableBinding.setTargetBinding(serviceBinding);
+                                    break;
+                                }
+                            }
+                        }
+                    }
+                }
+                // FIXME: The SCA spec is not clear how we should handle multiplicty for CallableReference
+                if (binding == null) {
+                    binding = reference.getBinding(SCABinding.class);
+                    if (binding == null) {
+                        binding = reference.getBindings().get(0);
+                    }
+                }
+                Interface i = reference.getInterfaceContract().getInterface();
+                if (i instanceof JavaInterface) {
+                    JavaInterface javaInterface = (JavaInterface)i;
+                    if (javaInterface.isUnresolved()) {
+                        javaInterface.setJavaClass(Thread.currentThread().getContextClassLoader()
+                            .loadClass(javaInterface.getName()));
+                        currentActivator.getJavaInterfaceFactory().createJavaInterface(javaInterface,
+                                                                                       javaInterface.getJavaClass());
+                    }
+                    this.businessInterface = (Class<B>)javaInterface.getJavaClass();
+                }
+                this.proxyFactory = currentActivator.getProxyFactory();
+            }
+        }
+    }
+
+    /**
+     * @see java.io.Externalizable#writeExternal(java.io.ObjectOutput)
+     */
+    public void writeExternal(ObjectOutput out) throws IOException {
+        try {
+            String scdl =
+                ((CompositeActivatorImpl)compositeActivator).getComponentContextHelper().toXML(component, reference);
+            out.writeUTF(scdl);
+            StringBuffer uri = new StringBuffer(componentURI);
+            boolean first = true;
+            if (conversationID != null) {
+                uri.append("?sca.conversationID=").append(conversationID);
+                first = false;
+            }
+            if (callbackID != null) {
+                if (!first) {
+                    uri.append("&");
+                } else {
+                    uri.append("?");
+                }
+                uri.append("sca.callbackID=").append(callbackID);
+            }
+            out.writeUTF(uri.toString());
+        } catch (Exception e) {
+            e.printStackTrace();
+            throw new IOException(e.getMessage());
+        }
+    }
+
+    /**
+     * Create a callback id
+     * 
+     * @return the callback id
+     */
+    private String createCallbackID() {
+        return UUID.randomUUID().toString();
+    }
+    
+    public void attachCallbackID(Object callbackID) {
+        this.callbackID = callbackID;
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/context/ComponentContextHelper.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/context/ComponentContextHelper.java
new file mode 100644
index 0000000000..e6679b7ce4
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/context/ComponentContextHelper.java
@@ -0,0 +1,290 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.core.context;
+
+import java.io.IOException;
+import java.io.Reader;
+import java.io.StringReader;
+import java.io.StringWriter;
+import java.io.Writer;
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.xml.namespace.QName;
+import javax.xml.stream.XMLInputFactory;
+import javax.xml.stream.XMLOutputFactory;
+import javax.xml.stream.XMLStreamReader;
+import javax.xml.stream.XMLStreamWriter;
+
+import org.apache.tuscany.sca.assembly.AssemblyFactory;
+import org.apache.tuscany.sca.assembly.Binding;
+import org.apache.tuscany.sca.assembly.Component;
+import org.apache.tuscany.sca.assembly.ComponentReference;
+import org.apache.tuscany.sca.assembly.ComponentService;
+import org.apache.tuscany.sca.assembly.Composite;
+import org.apache.tuscany.sca.assembly.Multiplicity;
+import org.apache.tuscany.sca.assembly.Reference;
+import org.apache.tuscany.sca.assembly.Service;
+import org.apache.tuscany.sca.assembly.WireableBinding;
+import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor;
+import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessorExtensionPoint;
+import org.apache.tuscany.sca.core.assembly.CompositeActivator;
+import org.apache.tuscany.sca.core.invocation.ThreadMessageContext;
+import org.apache.tuscany.sca.interfacedef.Interface;
+import org.apache.tuscany.sca.interfacedef.InterfaceContract;
+import org.apache.tuscany.sca.interfacedef.InvalidInterfaceException;
+import org.apache.tuscany.sca.interfacedef.java.JavaInterface;
+import org.apache.tuscany.sca.interfacedef.java.JavaInterfaceFactory;
+import org.apache.tuscany.sca.invocation.Message;
+import org.apache.tuscany.sca.runtime.EndpointReference;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+import org.apache.tuscany.sca.runtime.RuntimeComponentReference;
+import org.apache.tuscany.sca.runtime.RuntimeComponentService;
+import org.osoa.sca.ServiceRuntimeException;
+
+/**
+ * @version $Rev$ $Date$
+ */
+public class ComponentContextHelper {
+
+    private final AssemblyFactory assemblyFactory;
+    private final JavaInterfaceFactory javaInterfaceFactory;
+    private final StAXArtifactProcessorExtensionPoint staxProcessors;
+
+    /**
+     * @param assemblyFactory The factory to create assembly models
+     * @param processors The extension point for stax artifact processors
+     */
+    public ComponentContextHelper(AssemblyFactory assemblyFactory,
+                                  JavaInterfaceFactory javaInterfaceFactory,
+                                  StAXArtifactProcessorExtensionPoint processors) {
+        this.assemblyFactory = assemblyFactory;
+        this.javaInterfaceFactory = javaInterfaceFactory;
+        this.staxProcessors = processors;
+    }
+
+    /**
+     * Create a self-reference for a component service
+     * @param component
+     * @param service
+     * @throws CloneNotSupportedException 
+     * @throws InvalidInterfaceException 
+     */
+    public ComponentReference createSelfReference(Component component,
+                                                  ComponentService service,
+                                                  Class<?> businessInterface) throws CloneNotSupportedException,
+        InvalidInterfaceException {
+        ComponentReference componentReference = assemblyFactory.createComponentReference();
+        componentReference.setName("$self$." + service.getName());
+        for (Binding binding : service.getBindings()) {
+            if (binding instanceof WireableBinding) {
+                WireableBinding wireableBinding = (WireableBinding)((WireableBinding)binding).clone();
+                wireableBinding.setTargetBinding(binding);
+                wireableBinding.setTargetComponent(component);
+                wireableBinding.setTargetComponentService(service);
+                wireableBinding.setRemote(false);
+                componentReference.getBindings().add(wireableBinding);
+            } else {
+                componentReference.getBindings().add(binding);
+            }
+        }
+
+        componentReference.setCallback(service.getCallback());
+        componentReference.getTargets().add(service);
+        componentReference.getPolicySets().addAll(service.getPolicySets());
+        componentReference.getRequiredIntents().addAll(service.getRequiredIntents());
+
+        InterfaceContract interfaceContract = service.getInterfaceContract();
+        Service componentTypeService = service.getService();
+        if (componentTypeService != null && componentTypeService.getInterfaceContract() != null) {
+            interfaceContract = componentTypeService.getInterfaceContract();
+        }
+        interfaceContract = getInterfaceContract(interfaceContract, businessInterface);
+        componentReference.setInterfaceContract(interfaceContract);
+        componentReference.setMultiplicity(Multiplicity.ONE_ONE);
+        // component.getReferences().add(componentReference);
+        return componentReference;
+    }
+
+    /**
+     * @param interfaceContract
+     * @param businessInterface
+     * @return
+     * @throws CloneNotSupportedException
+     * @throws InvalidInterfaceException
+     */
+    private InterfaceContract getInterfaceContract(InterfaceContract interfaceContract, Class<?> businessInterface)
+        throws CloneNotSupportedException, InvalidInterfaceException {
+        Interface interfaze = interfaceContract.getInterface();
+        if (interfaze instanceof JavaInterface) {
+            Class<?> cls = ((JavaInterface)interfaze).getJavaClass();
+            if (!businessInterface.isAssignableFrom(cls)) {
+                // The interface is not assignable from the interface contract
+                interfaceContract = (InterfaceContract)interfaceContract.clone();
+                interfaceContract.setInterface(javaInterfaceFactory.createJavaInterface(businessInterface));
+            }
+        }
+        return interfaceContract;
+    }
+
+    /**
+     * Bind a component reference to a component service
+     * @param <B>
+     * @param businessInterface
+     * @param reference
+     * @param service
+     * @return
+     * @throws CloneNotSupportedException
+     * @throws InvalidInterfaceException
+     */
+    public RuntimeComponentReference bindComponentReference(Class<?> businessInterface,
+                                                            RuntimeComponentReference reference,
+                                                            RuntimeComponent component,
+                                                            RuntimeComponentService service)
+        throws CloneNotSupportedException, InvalidInterfaceException {
+        RuntimeComponentReference ref = (RuntimeComponentReference)reference.clone();
+        InterfaceContract interfaceContract = reference.getInterfaceContract();
+        Reference componentTypeReference = reference.getReference();
+        if (componentTypeReference != null && componentTypeReference.getInterfaceContract() != null) {
+            interfaceContract = componentTypeReference.getInterfaceContract();
+        }
+        InterfaceContract refInterfaceContract = getInterfaceContract(interfaceContract, businessInterface);
+        if (refInterfaceContract != interfaceContract) {
+            ref = (RuntimeComponentReference)reference.clone();
+            ref.setInterfaceContract(interfaceContract);
+        }
+        ref.setComponent(component);
+        ref.getTargets().add(service);
+        ref.getBindings().clear();
+        for (Binding binding : service.getBindings()) {
+            if (binding instanceof WireableBinding) {
+                WireableBinding wireableBinding = (WireableBinding)((WireableBinding)binding).clone();
+                wireableBinding.setTargetBinding(binding);
+                wireableBinding.setTargetComponent(component);
+                wireableBinding.setTargetComponentService(service);
+                wireableBinding.setRemote(false);
+                ref.getBindings().add(wireableBinding);
+            } else {
+                ref.getBindings().add(binding);
+            }
+        }
+        return ref;
+    }
+
+    public void write(Component component, ComponentReference reference, Writer writer) throws IOException {
+        try {
+            StAXArtifactProcessor<Composite> processor = staxProcessors.getProcessor(Composite.class);
+            Composite composite = assemblyFactory.createComposite();
+            composite.setName(new QName("http://tuscany.apache.org/xmlns/sca/1.0", "default"));
+            Component comp = assemblyFactory.createComponent();
+            comp.setName("default");
+            comp.setURI(component.getURI());
+            composite.getComponents().add(comp);
+            comp.getReferences().add(reference);
+
+            XMLOutputFactory outputFactory = XMLOutputFactory.newInstance();
+            XMLStreamWriter streamWriter = outputFactory.createXMLStreamWriter(writer);
+            processor.write(composite, streamWriter);
+        } catch (Exception e) {
+            throw new IOException(e.getMessage());
+        }
+    }
+
+    public String toXML(Component component, ComponentReference reference) throws IOException {
+        StringWriter writer = new StringWriter();
+        write(component, reference, writer);
+        return writer.toString();
+    }
+
+    public RuntimeComponent read(Reader reader) throws IOException {
+        try {
+            StAXArtifactProcessor<Composite> processor = staxProcessors.getProcessor(Composite.class);
+            XMLInputFactory inputFactory = XMLInputFactory.newInstance();
+            XMLStreamReader streamReader = inputFactory.createXMLStreamReader(reader);
+            Composite composite = processor.read(streamReader);
+            RuntimeComponent component = (RuntimeComponent)composite.getComponents().get(0);
+            return component;
+        } catch (Exception e) {
+            throw new IOException(e.getMessage());
+        }
+    }
+
+    public Component fromXML(String xml) throws IOException {
+        return read(new StringReader(xml));
+    }
+
+    public static RuntimeComponent getCurrentComponent() {
+        Message message = ThreadMessageContext.getMessageContext();
+        if (message != null) {
+            EndpointReference to = message.getTo();
+            if (to == null) {
+                return null;
+            }
+            RuntimeComponent component = message.getTo().getComponent();
+            return component;
+        }
+        return null;
+    }
+
+    public static CompositeActivator getCurrentCompositeActivator() {
+        RuntimeComponent component = getCurrentComponent();
+        if (component != null) {
+            ComponentContextImpl context = (ComponentContextImpl)component.getComponentContext();
+            return context.getCompositeActivator();
+        }
+        return null;
+    }
+
+    public static ComponentContextHelper getCurrentComponentContextHelper() {
+        CompositeActivator activator = getCurrentCompositeActivator();
+        if (activator != null) {
+            return activator.getComponentContextHelper();
+        }
+        return null;
+    }
+
+    /**
+     * @param component
+     */
+    public static ComponentService getSingleService(Component component) {
+        ComponentService targetService;
+        List<ComponentService> services = component.getServices();
+        List<ComponentService> regularServices = new ArrayList<ComponentService>();
+        for (ComponentService service : services) {
+            if (service.isCallback()) {
+                continue;
+            }
+            String name = service.getName();
+            if (!name.startsWith("$") || name.startsWith("$dynamic$")) {
+                regularServices.add(service);
+            }
+        }
+        if (regularServices.size() == 0) {
+            throw new ServiceRuntimeException("No service is declared on component " + component.getURI());
+        }
+        if (regularServices.size() != 1) {
+            throw new ServiceRuntimeException("More than one service is declared on component " + component.getURI()
+                + ". Service name is required to get the service.");
+        }
+        targetService = regularServices.get(0);
+        return targetService;
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/context/ComponentContextImpl.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/context/ComponentContextImpl.java
new file mode 100644
index 0000000000..f020ede4c9
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/context/ComponentContextImpl.java
@@ -0,0 +1,343 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.context;
+
+import java.io.IOException;
+import java.io.Reader;
+import java.io.Writer;
+
+import org.apache.tuscany.sca.assembly.AssemblyFactory;
+import org.apache.tuscany.sca.assembly.Binding;
+import org.apache.tuscany.sca.assembly.Component;
+import org.apache.tuscany.sca.assembly.ComponentProperty;
+import org.apache.tuscany.sca.assembly.ComponentReference;
+import org.apache.tuscany.sca.assembly.ComponentService;
+import org.apache.tuscany.sca.assembly.Multiplicity;
+import org.apache.tuscany.sca.assembly.Reference;
+import org.apache.tuscany.sca.assembly.Service;
+import org.apache.tuscany.sca.assembly.WireableBinding;
+import org.apache.tuscany.sca.context.RequestContextFactory;
+import org.apache.tuscany.sca.core.assembly.CompositeActivator;
+import org.apache.tuscany.sca.core.invocation.ProxyFactory;
+import org.apache.tuscany.sca.interfacedef.Interface;
+import org.apache.tuscany.sca.interfacedef.InterfaceContract;
+import org.apache.tuscany.sca.interfacedef.InterfaceContractMapper;
+import org.apache.tuscany.sca.interfacedef.InvalidInterfaceException;
+import org.apache.tuscany.sca.interfacedef.java.JavaInterface;
+import org.apache.tuscany.sca.interfacedef.java.JavaInterfaceFactory;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+import org.apache.tuscany.sca.runtime.RuntimeComponentContext;
+import org.apache.tuscany.sca.runtime.RuntimeComponentReference;
+import org.apache.tuscany.sca.runtime.RuntimeComponentService;
+import org.osoa.sca.CallableReference;
+import org.osoa.sca.RequestContext;
+import org.osoa.sca.ServiceReference;
+import org.osoa.sca.ServiceRuntimeException;
+
+/**
+ * Implementation of ComponentContext that delegates to a ComponentContextProvider.
+ *
+ * @version $Rev$ $Date$
+ */
+public class ComponentContextImpl implements RuntimeComponentContext {
+    private final RuntimeComponent component;
+
+    private final CompositeActivator compositeActivator;
+    private final RequestContextFactory requestContextFactory;
+    private final ProxyFactory proxyFactory;
+    private final AssemblyFactory assemblyFactory;
+    private final JavaInterfaceFactory javaInterfaceFactory;
+
+    public ComponentContextImpl(CompositeActivator compositeActivator,
+                                AssemblyFactory assemblyFactory,
+                                ProxyFactory proxyFactory,
+                                InterfaceContractMapper interfaceContractMapper,
+                                RequestContextFactory requestContextFactory,
+                                JavaInterfaceFactory javaInterfaceFactory,
+                                RuntimeComponent component) {
+        super();
+        this.compositeActivator = compositeActivator;
+        this.assemblyFactory = assemblyFactory;
+        this.proxyFactory = proxyFactory;
+        this.requestContextFactory = requestContextFactory;
+        this.javaInterfaceFactory = javaInterfaceFactory;
+        this.component = component;
+    }
+
+    public String getURI() {
+        return component.getURI();
+    }
+
+    public <B, R extends CallableReference<B>> R cast(B target) throws IllegalArgumentException {
+        return (R)proxyFactory.cast(target);
+    }
+
+    public <B> B getService(Class<B> businessInterface, String referenceName) {
+        ServiceReference<B> serviceRef = getServiceReference(businessInterface, referenceName);
+        return serviceRef.getService();
+    }
+
+    public <B> ServiceReference<B> getServiceReference(Class<B> businessInterface, String referenceName) {
+        try {
+            for (ComponentReference ref : component.getReferences()) {
+                if (referenceName.equals(ref.getName())) {
+                    return getServiceReference(businessInterface, (RuntimeComponentReference)ref);
+                }
+            }
+            throw new ServiceRuntimeException("Reference not found: " + referenceName);
+        } catch (ServiceRuntimeException e) {
+            throw e;
+        } catch (Exception e) {
+            throw new ServiceRuntimeException(e.getMessage(), e);
+        }
+    }
+
+    public <B> B getProperty(Class<B> type, String propertyName) {
+        for (ComponentProperty p : component.getProperties()) {
+            if (propertyName.equals(propertyName)) {
+                return type.cast(p.getValue());
+            }
+        }
+        throw new ServiceRuntimeException("Property not found: " + propertyName);
+    }
+
+    public <B> ServiceReference<B> createSelfReference(Class<B> businessInterface) {
+        ComponentService service = ComponentContextHelper.getSingleService(component);
+        try {
+            RuntimeComponentReference ref =
+                (RuntimeComponentReference)createSelfReference(component, service, businessInterface);
+            ref.setComponent(component);
+
+            return getServiceReference(businessInterface, ref);
+        } catch (Exception e) {
+            throw new ServiceRuntimeException(e.getMessage(), e);
+        }
+    }
+
+    public <B> ServiceReference<B> createSelfReference(Class<B> businessInterface, String serviceName) {
+        try {
+            for (ComponentService service : component.getServices()) {
+                if (serviceName.equals(service.getName())) {
+                    RuntimeComponentReference ref =
+                        (RuntimeComponentReference)createSelfReference(component, service, businessInterface);
+                    ref.setComponent(component);
+                    return getServiceReference(businessInterface, ref);
+                }
+            }
+            throw new ServiceRuntimeException("Service not found: " + serviceName);
+        } catch (ServiceRuntimeException e) {
+            throw e;
+        } catch (Exception e) {
+            throw new ServiceRuntimeException(e.getMessage(), e);
+        }
+    }
+
+    public RequestContext getRequestContext() {
+        if (requestContextFactory != null) {
+            return requestContextFactory.createRequestContext();
+        } else {
+            return new RequestContextImpl(proxyFactory);
+        }
+    }
+
+    /**
+     * @param businessInterface
+     * @param reference
+     * @return
+     * @throws CloneNotSupportedException
+     * @throws InvalidInterfaceException
+     */
+    public <B> ServiceReference<B> getServiceReference(Class<B> businessInterface, RuntimeComponentReference reference) {
+        try {
+            RuntimeComponentReference ref = (RuntimeComponentReference)reference;
+            InterfaceContract interfaceContract = reference.getInterfaceContract();
+            Reference componentTypeReference = reference.getReference();
+            if (componentTypeReference != null && componentTypeReference.getInterfaceContract() != null) {
+                interfaceContract = componentTypeReference.getInterfaceContract();
+            }
+            InterfaceContract refInterfaceContract = getInterfaceContract(interfaceContract, businessInterface);
+            if (refInterfaceContract != interfaceContract) {
+                ref = (RuntimeComponentReference)reference.clone();
+                ref.setInterfaceContract(interfaceContract);
+            }
+            ref.setComponent(component);
+            return new ServiceReferenceImpl<B>(businessInterface, component, ref, proxyFactory, compositeActivator);
+        } catch (Exception e) {
+            throw new ServiceRuntimeException(e);
+        }
+    }
+
+    /**
+     * Bind a component reference to a component service
+     * @param <B>
+     * @param businessInterface
+     * @param reference
+     * @param service
+     * @return
+     * @throws CloneNotSupportedException
+     * @throws InvalidInterfaceException
+     */
+    public <B> ServiceReference<B> getServiceReference(Class<B> businessInterface,
+                                                       RuntimeComponentReference reference,
+                                                       RuntimeComponent component,
+                                                       RuntimeComponentService service) {
+        try {
+            RuntimeComponentReference ref = (RuntimeComponentReference)reference.clone();
+            InterfaceContract interfaceContract = reference.getInterfaceContract();
+            Reference componentTypeReference = reference.getReference();
+            if (componentTypeReference != null && componentTypeReference.getInterfaceContract() != null) {
+                interfaceContract = componentTypeReference.getInterfaceContract();
+            }
+            InterfaceContract refInterfaceContract = getInterfaceContract(interfaceContract, businessInterface);
+            if (refInterfaceContract != interfaceContract) {
+                ref = (RuntimeComponentReference)reference.clone();
+                ref.setInterfaceContract(interfaceContract);
+            }
+            ref.getTargets().add(service);
+            ref.getBindings().clear();
+            for (Binding binding : service.getBindings()) {
+                if (binding instanceof WireableBinding) {
+                    WireableBinding wireableBinding = (WireableBinding)((WireableBinding)binding).clone();
+                    wireableBinding.setTargetBinding(binding);
+                    wireableBinding.setTargetComponent(component);
+                    wireableBinding.setTargetComponentService(service);
+                    wireableBinding.setRemote(false);
+                    ref.getBindings().add(wireableBinding);
+                } else {
+                    ref.getBindings().add(binding);
+                }
+            }
+            return new ServiceReferenceImpl<B>(businessInterface, component, ref, proxyFactory, compositeActivator);
+        } catch (Exception e) {
+            throw new ServiceRuntimeException(e);
+        }
+    }
+
+    public <B> CallableReference<B> getCallableReference(Class<B> businessInterface,
+                                                         RuntimeComponent component,
+                                                         RuntimeComponentService service) {
+        try {
+            if (businessInterface == null) {
+                InterfaceContract contract = service.getInterfaceContract();
+                businessInterface = (Class<B>)((JavaInterface)contract.getInterface()).getJavaClass();
+            }
+            RuntimeComponentReference ref =
+                (RuntimeComponentReference)createSelfReference(component, service, businessInterface);
+            ref.setComponent(component);
+            return new CallableReferenceImpl<B>(businessInterface, component, ref, null, proxyFactory,
+                                                compositeActivator);
+        } catch (Exception e) {
+            throw new ServiceRuntimeException(e);
+        }
+    }
+
+    /**
+     * Create a self-reference for a component service
+     * @param component
+     * @param service
+     * @throws CloneNotSupportedException 
+     * @throws InvalidInterfaceException 
+     */
+    private ComponentReference createSelfReference(Component component,
+                                                   ComponentService service,
+                                                   Class<?> businessInterface) throws CloneNotSupportedException,
+        InvalidInterfaceException {
+        ComponentReference componentReference = assemblyFactory.createComponentReference();
+        componentReference.setName("$self$." + service.getName());
+        for (Binding binding : service.getBindings()) {
+            if (binding instanceof WireableBinding) {
+                WireableBinding wireableBinding = (WireableBinding)((WireableBinding)binding).clone();
+                wireableBinding.setTargetBinding(binding);
+                wireableBinding.setTargetComponent(component);
+                wireableBinding.setTargetComponentService(service);
+                wireableBinding.setRemote(false);
+                componentReference.getBindings().add(wireableBinding);
+            } else {
+                componentReference.getBindings().add(binding);
+            }
+        }
+
+        componentReference.setCallback(service.getCallback());
+        componentReference.getTargets().add(service);
+        componentReference.getPolicySets().addAll(service.getPolicySets());
+        componentReference.getRequiredIntents().addAll(service.getRequiredIntents());
+
+        InterfaceContract interfaceContract = service.getInterfaceContract();
+        Service componentTypeService = service.getService();
+        if (componentTypeService != null && componentTypeService.getInterfaceContract() != null) {
+            interfaceContract = componentTypeService.getInterfaceContract();
+        }
+        interfaceContract = getInterfaceContract(interfaceContract, businessInterface);
+        componentReference.setInterfaceContract(interfaceContract);
+        componentReference.setMultiplicity(Multiplicity.ONE_ONE);
+        // component.getReferences().add(componentReference);
+        return componentReference;
+    }
+
+    /**
+     * @param interfaceContract
+     * @param businessInterface
+     * @return
+     * @throws CloneNotSupportedException
+     * @throws InvalidInterfaceException
+     */
+    private InterfaceContract getInterfaceContract(InterfaceContract interfaceContract, Class<?> businessInterface)
+        throws CloneNotSupportedException, InvalidInterfaceException {
+        Interface interfaze = interfaceContract.getInterface();
+        if (interfaze instanceof JavaInterface) {
+            Class<?> cls = ((JavaInterface)interfaze).getJavaClass();
+            if (!businessInterface.isAssignableFrom(cls)) {
+                // The interface is not assignable from the interface contract
+                interfaceContract = (InterfaceContract)interfaceContract.clone();
+                interfaceContract.setInterface(javaInterfaceFactory.createJavaInterface(businessInterface));
+            }
+        }
+        return interfaceContract;
+    }
+
+    /**
+     * @return the compositeActivator
+     */
+    public CompositeActivator getCompositeActivator() {
+        return compositeActivator;
+    }
+
+    /**
+     * @see org.apache.tuscany.sca.runtime.RuntimeComponentContext#activate(org.apache.tuscany.sca.runtime.RuntimeComponentReference)
+     */
+    public void activate(RuntimeComponentReference reference) {
+        compositeActivator.activate(component, reference);
+    }
+
+    /**
+     * @see org.apache.tuscany.sca.runtime.RuntimeComponentContext#read(java.io.Reader)
+     */
+    public RuntimeComponent read(Reader reader) throws IOException {
+        RuntimeComponent component = compositeActivator.getComponentContextHelper().read(reader);
+        compositeActivator.configureComponentContext(component);
+        return component;
+    }
+
+    /**
+     * @see org.apache.tuscany.sca.runtime.RuntimeComponentContext#write(org.apache.tuscany.sca.runtime.RuntimeComponentReference, java.io.Writer)
+     */
+    public void write(RuntimeComponentReference reference, Writer writer) throws IOException {
+        compositeActivator.getComponentContextHelper().write(component, reference, writer);
+    }
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/context/ConversationImpl.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/context/ConversationImpl.java
new file mode 100644
index 0000000000..8e7d979daf
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/context/ConversationImpl.java
@@ -0,0 +1,44 @@
+/*

+ * Licensed to the Apache Software Foundation (ASF) under one

+ * or more contributor license agreements.  See the NOTICE file

+ * distributed with this work for additional information

+ * regarding copyright ownership.  The ASF licenses this file

+ * to you under the Apache License, Version 2.0 (the

+ * "License"); you may not use this file except in compliance

+ * with the License.  You may obtain a copy of the License at

+ * 

+ *   http://www.apache.org/licenses/LICENSE-2.0

+ * 

+ * Unless required by applicable law or agreed to in writing,

+ * software distributed under the License is distributed on an

+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

+ * KIND, either express or implied.  See the License for the

+ * specific language governing permissions and limitations

+ * under the License.    

+ */

+package org.apache.tuscany.sca.core.context;

+

+import org.osoa.sca.Conversation;

+

+

+/**

+ * Default implementation of a Conversation.

+ *

+ * @version $Rev: 557524 $ $Date: 2007-07-19 09:46:56 +0100 (Thu, 19 Jul 2007) $

+ */

+public class ConversationImpl implements Conversation {

+    

+    private Object conversationId;

+

+    public Object getConversationID() {

+        return conversationId;

+    }

+

+    public void setConversationID(Object conversationId) {

+        this.conversationId = conversationId;

+    }

+    

+    public void end() {

+        conversationId = null;

+    }

+}

diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/context/DefaultComponentContextFactory.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/context/DefaultComponentContextFactory.java
new file mode 100644
index 0000000000..c5b68389b2
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/context/DefaultComponentContextFactory.java
@@ -0,0 +1,70 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.core.context;
+
+import org.apache.tuscany.sca.assembly.AssemblyFactory;
+import org.apache.tuscany.sca.context.ComponentContextFactory;
+import org.apache.tuscany.sca.context.RequestContextFactory;
+import org.apache.tuscany.sca.core.assembly.CompositeActivator;
+import org.apache.tuscany.sca.core.invocation.ProxyFactory;
+import org.apache.tuscany.sca.interfacedef.InterfaceContractMapper;
+import org.apache.tuscany.sca.interfacedef.java.JavaInterfaceFactory;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+import org.osoa.sca.ComponentContext;
+
+/**
+ * @version $Rev$ $Date$
+ */
+public class DefaultComponentContextFactory implements ComponentContextFactory {
+    private final CompositeActivator compositeActivator;
+    private final RequestContextFactory requestContextFactory;
+    private final ProxyFactory proxyFactory;
+    private final AssemblyFactory assemblyFactory;
+    private final JavaInterfaceFactory javaInterfaceFactory;
+    private final InterfaceContractMapper interfaceContractMapper;
+
+    public DefaultComponentContextFactory(CompositeActivator compositeActivator,
+                                          AssemblyFactory assemblyFactory,
+                                          ProxyFactory proxyFactory,
+                                          InterfaceContractMapper interfaceContractMapper,
+                                          RequestContextFactory requestContextFactory,
+                                          JavaInterfaceFactory javaInterfaceFactory) {
+        super();
+        this.compositeActivator = compositeActivator;
+        this.assemblyFactory = assemblyFactory;
+        this.proxyFactory = proxyFactory;
+        this.requestContextFactory = requestContextFactory;
+        this.javaInterfaceFactory = javaInterfaceFactory;
+        this.interfaceContractMapper = interfaceContractMapper;
+    }
+
+    /**
+     * @see org.apache.tuscany.sca.context.ComponentContextFactory#createComponentContext(org.apache.tuscany.sca.runtime.RuntimeComponent, org.apache.tuscany.sca.context.RequestContextFactory)
+     */
+    public ComponentContext createComponentContext(RuntimeComponent component,
+                                                   RequestContextFactory requestContextFactory) {
+        if (requestContextFactory == null) {
+            requestContextFactory = this.requestContextFactory;
+        }
+        return new ComponentContextImpl(compositeActivator, assemblyFactory, proxyFactory, interfaceContractMapper,
+                                        requestContextFactory, javaInterfaceFactory, component);
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/context/InstanceWrapper.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/context/InstanceWrapper.java
new file mode 100644
index 0000000000..b577180291
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/context/InstanceWrapper.java
@@ -0,0 +1,48 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.context;
+
+import org.apache.tuscany.sca.core.scope.TargetDestructionException;
+import org.apache.tuscany.sca.core.scope.TargetInitializationException;
+
+
+/**
+ * Provides lifecycle management for an implementation instance associated with
+ * a component for use by the component's associated {@link org.apache.tuscany.sca.core.scope.ScopeContainer}
+ * 
+ * @version $Rev$ $Date$
+ */
+public interface InstanceWrapper<T> {
+
+    /**
+     * @return
+     */
+    T getInstance();
+
+    /**
+     * @throws TargetInitializationException
+     */
+    void start() throws TargetInitializationException;
+
+    /**
+     * @throws TargetDestructionException
+     */
+    void stop() throws TargetDestructionException;
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/context/RequestContextImpl.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/context/RequestContextImpl.java
new file mode 100644
index 0000000000..6810f44d08
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/context/RequestContextImpl.java
@@ -0,0 +1,89 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.tuscany.sca.core.context;
+
+import java.util.List;
+
+import javax.security.auth.Subject;
+
+import org.apache.tuscany.sca.core.invocation.CallbackWireObjectFactory;
+import org.apache.tuscany.sca.core.invocation.ProxyFactory;
+import org.apache.tuscany.sca.core.invocation.ThreadMessageContext;
+import org.apache.tuscany.sca.interfacedef.java.JavaInterface;
+import org.apache.tuscany.sca.runtime.EndpointReference;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+import org.apache.tuscany.sca.runtime.RuntimeComponentReference;
+import org.apache.tuscany.sca.runtime.RuntimeComponentService;
+import org.apache.tuscany.sca.runtime.RuntimeWire;
+import org.osoa.sca.CallableReference;
+import org.osoa.sca.RequestContext;
+
+/**
+ * @version $Rev$ $Date$
+ */
+public class RequestContextImpl implements RequestContext {
+
+    private ProxyFactory proxyFactory;
+
+    public RequestContextImpl(ProxyFactory proxyFactory) {
+        this.proxyFactory = proxyFactory;
+    }
+
+    public Subject getSecuritySubject() {
+        throw new UnsupportedOperationException();
+    }
+
+    public String getServiceName() {
+        return ThreadMessageContext.getMessageContext().getTo().getContract().getName();
+    }
+
+    @SuppressWarnings("unchecked")
+    public <B> CallableReference<B> getServiceReference() {
+        // FIXME: [rfeng] Is this the service reference matching the caller side?
+        EndpointReference to = ThreadMessageContext.getMessageContext().getTo();
+        RuntimeComponentService service = (RuntimeComponentService) to.getContract();
+        RuntimeComponent component = (RuntimeComponent) to.getComponent();
+        
+        CallableReference<B> callableReference = component.getComponentContext().getCallableReference(null, component, service);
+        ((CallableReferenceImpl<B>) callableReference).attachCallbackID(ThreadMessageContext.getMessageContext().getCorrelationID());
+        return callableReference;
+    }
+
+    @SuppressWarnings("unchecked")
+    public <CB> CB getCallback() {
+        return (CB) getCallbackReference().getService();
+    }
+
+    @SuppressWarnings("unchecked")
+    public <CB> CallableReference<CB> getCallbackReference() {
+        EndpointReference to = ThreadMessageContext.getMessageContext().getTo();
+        RuntimeComponentService service = (RuntimeComponentService) to.getContract();
+        RuntimeComponentReference callbackReference = (RuntimeComponentReference)service.getCallbackReference();
+        if (callbackReference == null) {
+            return null;
+        }
+        JavaInterface javaInterface = (JavaInterface) callbackReference.getInterfaceContract().getInterface();
+        Class<CB> javaClass = (Class<CB>)javaInterface.getJavaClass();
+        List<RuntimeWire> wires = callbackReference.getRuntimeWires();
+        CallbackWireObjectFactory factory = new CallbackWireObjectFactory(javaClass, proxyFactory, wires);
+        factory.resolveTarget();
+        factory.attachCallbackID(ThreadMessageContext.getMessageContext().getCorrelationID());
+        return factory;
+    }
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/context/ServiceReferenceImpl.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/context/ServiceReferenceImpl.java
new file mode 100644
index 0000000000..86d9e09642
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/context/ServiceReferenceImpl.java
@@ -0,0 +1,104 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.context;
+
+import java.util.UUID;
+
+import org.apache.tuscany.sca.assembly.Binding;
+import org.apache.tuscany.sca.core.assembly.CompositeActivator;
+import org.apache.tuscany.sca.core.invocation.ProxyFactory;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+import org.apache.tuscany.sca.runtime.RuntimeComponentReference;
+import org.apache.tuscany.sca.runtime.RuntimeWire;
+import org.osoa.sca.Conversation;
+import org.osoa.sca.ServiceReference;
+
+/**
+ * Default implementation of a ServiceReference.
+ *
+ * @version $Rev$ $Date$
+ * @param <B> the type of the business interface
+ */
+public class ServiceReferenceImpl<B> extends CallableReferenceImpl<B> implements ServiceReference<B> {
+    private static final long serialVersionUID = 6763709434194361540L;
+
+    protected transient Object callback;
+
+    public ServiceReferenceImpl() {
+        super();
+    }
+
+    /**
+     * @param businessInterface
+     * @param wire
+     * @param proxyFactory
+     */
+    public ServiceReferenceImpl(Class<B> businessInterface, RuntimeWire wire, ProxyFactory proxyFactory) {
+        super(businessInterface, wire, proxyFactory);
+    }
+    
+    public ServiceReferenceImpl(Class<B> businessInterface,
+                                RuntimeComponent component,
+                                RuntimeComponentReference reference,
+                                ProxyFactory proxyFactory,
+                                CompositeActivator compositeActivator) {
+        super(businessInterface, component, reference, null, proxyFactory, compositeActivator);
+    }
+
+    public ServiceReferenceImpl(Class<B> businessInterface,
+                                RuntimeComponent component,
+                                RuntimeComponentReference reference,
+                                Binding binding,
+                                ProxyFactory proxyFactory,
+                                CompositeActivator compositeActivator) {
+        super(businessInterface, component, reference, binding, proxyFactory, compositeActivator);
+    }
+
+    public Object getConversationID() {
+        return conversationID;
+    }
+
+    public void setConversationID(Object conversationID) throws IllegalStateException {
+        Conversation conversation = getConversation();
+        if (conversation == null) {
+            if (conversationID == null) {
+                this.conversationID = UUID.randomUUID().toString();
+            } else {
+                this.conversationID = conversationID;
+            }
+        } else {
+            // FIXME: [refng] Commented it out for now so that test cases are not broken
+            // throw new IllegalStateException("A conversation is currently associated with this reference");
+            this.conversationID = conversationID;
+            ((ConversationImpl) conversation).setConversationID(conversationID);
+        }
+    }
+
+    public void setCallbackID(Object callbackID) {
+        this.callbackID = callbackID;
+    }
+
+    public Object getCallback() {
+        return callback;
+    }
+
+    public void setCallback(Object callback) {
+        this.callback = callback;
+    }
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/event/BaseEventPublisher.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/event/BaseEventPublisher.java
new file mode 100644
index 0000000000..517e5579a4
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/event/BaseEventPublisher.java
@@ -0,0 +1,89 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.tuscany.sca.core.event;
+
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.CopyOnWriteArrayList;
+
+import org.apache.tuscany.sca.event.Event;
+import org.apache.tuscany.sca.event.EventFilter;
+import org.apache.tuscany.sca.event.EventPublisher;
+import org.apache.tuscany.sca.event.RuntimeEventListener;
+import org.apache.tuscany.sca.event.TrueFilter;
+
+/**
+ * Base implementation of an <code>EventPublisher</code>
+ *
+ * @version $Rev$ $Date$
+ */
+public abstract class BaseEventPublisher implements EventPublisher {
+    protected static final EventFilter TRUE_FILTER = new TrueFilter();
+    protected Map<EventFilter, List<RuntimeEventListener>> listeners;
+
+    public void addListener(RuntimeEventListener listener) {
+        addListener(TRUE_FILTER, listener);
+    }
+
+    public void removeListener(RuntimeEventListener listener) {
+        assert listener != null : "Listener cannot be null";
+        synchronized (getListeners()) {
+            for (List<RuntimeEventListener> currentList : getListeners().values()) {
+                for (RuntimeEventListener current : currentList) {
+                    if (current == listener) {
+                        currentList.remove(current);
+                        return;
+                    }
+                }
+            }
+        }
+    }
+
+    public void addListener(EventFilter filter, RuntimeEventListener listener) {
+        assert listener != null : "Listener cannot be null";
+        synchronized (getListeners()) {
+            List<RuntimeEventListener> list = getListeners().get(filter);
+            if (list == null) {
+                list = new CopyOnWriteArrayList<RuntimeEventListener>();
+                listeners.put(filter, list);
+            }
+            list.add(listener);
+        }
+    }
+
+    public void publish(Event event) {
+        assert event != null : "Event object was null";
+        for (Map.Entry<EventFilter, List<RuntimeEventListener>> entry : getListeners().entrySet()) {
+            if (entry.getKey().match(event)) {
+                for (RuntimeEventListener listener : entry.getValue()) {
+                    listener.onEvent(event);
+                }
+            }
+        }
+    }
+
+    protected Map<EventFilter, List<RuntimeEventListener>> getListeners() {
+        if (listeners == null) {
+            listeners = new ConcurrentHashMap<EventFilter, List<RuntimeEventListener>>();
+        }
+        return listeners;
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/event/ComponentStart.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/event/ComponentStart.java
new file mode 100644
index 0000000000..8e90c953e5
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/event/ComponentStart.java
@@ -0,0 +1,54 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.event;
+
+import java.net.URI;
+
+import org.apache.tuscany.sca.event.Event;
+
+/**
+ * Propagated when a component starts
+ *
+ * @version $$Rev$$ $$Date$$
+ */
+public class ComponentStart implements Event {
+
+    private Object source;
+    private URI uri;
+
+    /**
+     * Creates a component start event
+     *
+     * @param source       the source of the event
+     * @param componentURI the uri of the component being started
+     */
+    public ComponentStart(Object source, URI componentURI) {
+        this.source = source;
+        this.uri = componentURI;
+    }
+
+    public URI getComponentURI() {
+        return uri;
+    }
+    
+    public Object getSource() {
+        return source;
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/event/ComponentStop.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/event/ComponentStop.java
new file mode 100644
index 0000000000..d879182e14
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/event/ComponentStop.java
@@ -0,0 +1,53 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.event;
+
+import java.net.URI;
+
+import org.apache.tuscany.sca.event.Event;
+
+/**
+ * Propagated when a component stops
+ *
+ * @version $$Rev$$ $$Date$$
+ */
+public class ComponentStop implements Event {
+
+    private Object source; 
+    private URI uri;
+
+    /**
+     * Creates a component stop event
+     *
+     * @param source    the source of the event
+     * @param componentUri the composite component associated the component being stopped
+     */
+    public ComponentStop(Object source, URI componentUri) {
+        this.source = source;
+        this.uri = componentUri;
+    }
+
+    public URI getComponentURI() {
+        return uri;
+    }
+    
+    public Object getSource() {
+        return source;
+    }
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/event/ConversationEnd.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/event/ConversationEnd.java
new file mode 100644
index 0000000000..cd14710880
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/event/ConversationEnd.java
@@ -0,0 +1,53 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.event;
+
+import org.apache.tuscany.sca.event.Event;
+
+
+
+/**
+ * Propagated when a conversation is expired
+ *
+ * @version $$Rev$$ $$Date$$
+ */
+public class ConversationEnd implements Event {
+    
+    private Object source;
+    private Object id;
+
+    /**
+     * Creates a new event
+     *
+     * @param source the source of the event
+     * @param id     the id of the conversation being ended
+     */
+    public ConversationEnd(Object source, Object id) {
+        this.source = source;
+        this.id = id;
+    }
+
+    public Object getSource() {
+        return source;
+    }
+    
+    public Object getConversationID() {
+        return id;
+    }
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/event/ConversationStart.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/event/ConversationStart.java
new file mode 100644
index 0000000000..a4cc49204e
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/event/ConversationStart.java
@@ -0,0 +1,52 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.event;
+
+import org.apache.tuscany.sca.event.Event;
+
+
+/**
+ * Propagated when a conversation has started
+ *
+ * @version $$Rev$$ $$Date$$
+ */
+public class ConversationStart implements Event {
+    
+    private Object source;
+    private Object id;
+
+    /**
+     * Creates a new event
+     *
+     * @param source the source of the event
+     * @param id     the id of the conversation being started
+     */
+    public ConversationStart(Object source, Object id) {
+        this.source = source;
+        this.id = id;
+    }
+
+    public Object getSource() {
+        return source;
+    }
+    
+    public Object getConversationID() {
+        return id;
+    }
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/event/HttpSessionEnd.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/event/HttpSessionEnd.java
new file mode 100644
index 0000000000..4c3fd8b397
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/event/HttpSessionEnd.java
@@ -0,0 +1,53 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.event;
+
+import org.apache.tuscany.sca.event.Event;
+
+
+
+/**
+ * Propagated when an HTTP-based session is expired
+ *
+ * @version $$Rev$$ $$Date$$
+ */
+public class HttpSessionEnd implements Event {
+    
+    private Object source;
+    private Object id;
+
+    /**
+     * Creates a new event
+     *
+     * @param source the source of the event
+     * @param id     the id of the HTTP session being ended
+     */
+    public HttpSessionEnd(Object source, Object id) {
+        this.source = source;
+        this.id = id;
+    }
+
+    public Object getSource() {
+        return source;
+    }
+    
+    public Object getSessionID() {
+        return id;
+    }
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/event/HttpSessionStart.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/event/HttpSessionStart.java
new file mode 100644
index 0000000000..67b922b99c
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/event/HttpSessionStart.java
@@ -0,0 +1,52 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.event;
+
+import org.apache.tuscany.sca.event.Event;
+
+
+/**
+ * Propagated when an HTTP-based session has started
+ *
+ * @version $$Rev$$ $$Date$$
+ */
+public class HttpSessionStart implements Event {
+    
+    private Object source;
+    private Object id;
+
+    /**
+     * Creates a new event
+     *
+     * @param source the source of the event
+     * @param id     the id of the HTTP session being started
+     */
+    public HttpSessionStart(Object source, Object id) {
+        this.source = source;
+        this.id = id;
+    }
+
+    public Object getSource() {
+        return source;
+    }
+    
+    public Object getSessionID() {
+        return id;
+    }
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/event/RequestEnd.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/event/RequestEnd.java
new file mode 100644
index 0000000000..8b5c512cf2
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/event/RequestEnd.java
@@ -0,0 +1,45 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.event;
+
+import org.apache.tuscany.sca.event.Event;
+
+/**
+ * Propagated when a request completes or is ended
+ *
+ * @version $$Rev$$ $$Date$$
+ */
+public class RequestEnd implements Event {
+
+    private Object source;
+    
+    /**
+     * Creates a new event
+     *
+     * @param source the source of the event
+     */
+    public RequestEnd(Object source) {
+        this.source = source;
+    }
+    
+    public Object getSource() {
+        return source;
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/event/RequestStart.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/event/RequestStart.java
new file mode 100644
index 0000000000..974563b57c
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/event/RequestStart.java
@@ -0,0 +1,45 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.event;
+
+import org.apache.tuscany.sca.event.Event;
+
+/**
+ * Propagated when a request is started in the runtime
+ *
+ * @version $$Rev$$ $$Date$$
+ */
+public class RequestStart implements Event {
+    
+    private Object source;
+
+    /**
+     * Creates a new event
+     *
+     * @param source the source of the event
+     */
+    public RequestStart(Object source) {
+        this.source = source;
+    }
+
+    public Object getSource() {
+        return source;
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/factory/ObjectCreationException.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/factory/ObjectCreationException.java
new file mode 100644
index 0000000000..d35b27fd24
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/factory/ObjectCreationException.java
@@ -0,0 +1,47 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.factory;
+
+
+/**
+ * Denotes an error creating a new object instance
+ *
+ * @version $Rev$ $Date$
+ */
+public class ObjectCreationException extends RuntimeException {
+    private static final long serialVersionUID = -6423113430265944499L;
+
+    public ObjectCreationException() {
+        super();
+    }
+
+    public ObjectCreationException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public ObjectCreationException(String message) {
+        super(message);
+    }
+
+    public ObjectCreationException(Throwable cause) {
+        super(cause);
+    }
+
+}
+
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/factory/ObjectFactory.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/factory/ObjectFactory.java
new file mode 100644
index 0000000000..3f64d2405b
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/factory/ObjectFactory.java
@@ -0,0 +1,35 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.factory;
+
+/**
+ * Implementations create new instances of a particular type
+ *
+ * @version $Rev$ $Date$
+ */
+public interface ObjectFactory<T> {
+
+    /**
+     * Return a instance of the type that this factory creates.
+     *
+     * @return a instance from this factory
+     */
+    T getInstance() throws ObjectCreationException;
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/CallableReferenceObjectFactory.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/CallableReferenceObjectFactory.java
new file mode 100644
index 0000000000..f53551962b
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/CallableReferenceObjectFactory.java
@@ -0,0 +1,55 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.invocation;
+
+import org.apache.tuscany.sca.core.factory.ObjectCreationException;
+import org.apache.tuscany.sca.core.factory.ObjectFactory;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+import org.apache.tuscany.sca.runtime.RuntimeComponentReference;
+import org.osoa.sca.CallableReference;
+
+/**
+ * Uses a wire to return a callable reference
+ * 
+ * @version $Rev$ $Date$
+ */
+public class CallableReferenceObjectFactory implements ObjectFactory<CallableReference<?>> {
+    private CallableReference<?> callableReference;
+
+    /**
+     * Constructor.
+     * 
+     * To support the @Reference protected CallableReference<MyService> ref;
+     * 
+     * @param interfaze the interface to inject on the client
+     * @param wire the backing wire
+     * @param proxyService the wire service to create the proxy
+     * @throws NoMethodForOperationException
+     */
+    public CallableReferenceObjectFactory(Class<?> businessInterface,
+                                          RuntimeComponent component,
+                                          RuntimeComponentReference reference) {
+        this.callableReference = component.getComponentContext().getServiceReference(businessInterface, reference);
+    }
+
+    public CallableReference<?> getInstance() throws ObjectCreationException {
+        return callableReference;
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/CallbackInterfaceInterceptor.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/CallbackInterfaceInterceptor.java
new file mode 100644
index 0000000000..219dc55536
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/CallbackInterfaceInterceptor.java
@@ -0,0 +1,57 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.tuscany.sca.core.invocation;
+
+import org.apache.tuscany.sca.invocation.Interceptor;
+import org.apache.tuscany.sca.invocation.Invoker;
+import org.apache.tuscany.sca.invocation.Message;
+import org.osoa.sca.NoRegisteredCallbackException;
+
+/**
+ * An interceptor applied to the forward direction of a wire that ensures the callback target implements the required
+ * service contract. This is required as callback targets may be set dynamically by service implementations.
+ *
+ * @version $Rev$ $Date$
+ */
+public class CallbackInterfaceInterceptor implements Interceptor {
+    private boolean invokingServiceImplements;
+    private Invoker next;
+
+    public CallbackInterfaceInterceptor(boolean invokingServiceImplements) {
+        this.invokingServiceImplements = invokingServiceImplements;
+    }
+
+    public Message invoke(Message msg) {
+        // TODO check in the context if a callback object is set, if so invoke next since the setCallback will
+        // perform the check
+        if (!invokingServiceImplements) {
+            throw new NoRegisteredCallbackException("Callback target does not implement the callback interface");
+        }
+        return next.invoke(msg);
+    }
+
+    public void setNext(Invoker next) {
+        this.next = next;
+    }
+
+    public Invoker getNext() {
+        return next;
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/CallbackWireObjectFactory.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/CallbackWireObjectFactory.java
new file mode 100644
index 0000000000..b6cd2dcc9f
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/CallbackWireObjectFactory.java
@@ -0,0 +1,160 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.invocation;
+
+import java.util.List;
+
+import org.apache.tuscany.sca.assembly.Binding;
+import org.apache.tuscany.sca.assembly.WireableBinding;
+import org.apache.tuscany.sca.core.context.CallableReferenceImpl;
+import org.apache.tuscany.sca.core.factory.ObjectCreationException;
+import org.apache.tuscany.sca.invocation.Message;
+import org.apache.tuscany.sca.runtime.EndpointReference;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+import org.apache.tuscany.sca.runtime.RuntimeComponentReference;
+import org.apache.tuscany.sca.runtime.RuntimeComponentService;
+import org.apache.tuscany.sca.runtime.RuntimeWire;
+
+/**
+ * Returns proxy instance for a wire callback
+ *
+ * @version $Rev$ $Date$
+ */
+public class CallbackWireObjectFactory<B> extends CallableReferenceImpl<B> {
+    private RuntimeWire wire;
+    private List<RuntimeWire> wires;
+    private EndpointReference resolvedEndpoint;
+
+    public CallbackWireObjectFactory(Class<B> interfaze, ProxyFactory proxyFactory, List<RuntimeWire> wires) {
+        super(interfaze, null, proxyFactory);
+        this.wires = wires;
+    }
+
+    public void resolveTarget() {
+        Message msgContext = ThreadMessageContext.getMessageContext();
+        wire = selectCallbackWire(msgContext, wires);
+        if (wire == null) {
+            //FIXME: need better exception
+            throw new RuntimeException("No callback wire found for " + msgContext.getFrom().getURI());
+        }
+        resolvedEndpoint = msgContext.getFrom();
+        bind(wire);
+    }
+
+    @Override
+    public B getInstance() throws ObjectCreationException {
+        if (wire != null) {
+            // wire and endpoint already resolved, so return a pre-wired proxy
+            wire.setTarget(resolvedEndpoint);
+            return super.getInstance();
+        } else {
+            // wire not yet selected, so return a proxy that resolves the target dynamically
+            return proxyFactory.createCallbackProxy(businessInterface, wires);
+        }
+    }
+
+    public static RuntimeWire selectCallbackWire(Message msgContext, List<RuntimeWire> wires) {
+        EndpointReference from = msgContext.getFrom();
+        if (from == null) {
+            return null;
+        }
+
+        //FIXME: need a cache for better performance.  This requires making this
+        // method non-static, which means changing the signature of createCallbackProxy().
+
+        // first choice is wire with matching destination endpoint
+        for (RuntimeWire wire : wires) {
+            if (from.getURI().equals(wire.getTarget().getURI())) {
+                return wire;
+            }
+        }
+
+        // no exact match, so find callback binding with same name as service binding
+        EndpointReference to = msgContext.getTo();
+        if (to == null) {
+            //FIXME: need better exception
+            throw new RuntimeException("Destination for forward call is not available");
+        }
+        for (RuntimeWire wire : wires) {
+            if (wire.getSource().getBinding().getName().equals(to.getBinding().getName())) {
+                //FIXME: need better way to represent dynamic wire
+                if (wire.getTarget().getURI().equals("/")) { // dynamic wire
+                    //FIXME: avoid doing this for genuine dynamic wires
+                    return cloneAndBind(msgContext, wire);
+                }
+                //FIXME: no dynamic wire, so should attempt to create a static wire 
+            }
+        }
+
+        // no match so far, so find callback binding with same type as service binding
+        for (RuntimeWire wire : wires) {
+            if (wire.getSource().getBinding().getClass() == to.getBinding().getClass()) {
+                //FIXME: need better way to represent dynamic wire
+                if (wire.getTarget().getURI().equals("/")) { // dynamic wire
+                    //FIXME: avoid doing this for genuine dynamic wires
+                    return cloneAndBind(msgContext, wire);
+                }
+                //FIXME: no dynamic wire, so should attempt to create a static wire 
+            }
+        }
+
+        // no suitable callback wire was found
+        return null;
+    }
+
+    private static RuntimeWire cloneAndBind(Message msgContext, RuntimeWire wire) {
+        EndpointReference callback = msgContext.getFrom();
+        if (callback != null && callback.getContract() != null) {
+            try {
+                RuntimeComponentReference ref =
+                    bind((RuntimeComponentReference)wire.getSource().getContract(),
+                         callback.getComponent(),
+                         (RuntimeComponentService)callback.getContract());
+                return ref.getRuntimeWires().get(0);
+            } catch (CloneNotSupportedException e) {
+                // will not happen
+                return null;
+            }
+        } else {
+            return wire;
+        }
+    }
+
+    private static RuntimeComponentReference bind(RuntimeComponentReference reference,
+                                                  RuntimeComponent component,
+                                                  RuntimeComponentService service) throws CloneNotSupportedException {
+        RuntimeComponentReference ref = (RuntimeComponentReference)reference.clone();
+        ref.getTargets().add(service);
+        ref.getBindings().clear();
+        for (Binding binding : service.getBindings()) {
+            if (binding instanceof WireableBinding) {
+                WireableBinding wireableBinding = (WireableBinding)((WireableBinding)binding).clone();
+                wireableBinding.setTargetBinding(binding);
+                wireableBinding.setTargetComponent(component);
+                wireableBinding.setTargetComponentService(service);
+                wireableBinding.setRemote(false);
+                ref.getBindings().add(wireableBinding);
+            } else {
+                ref.getBindings().add(binding);
+            }
+        }
+        return ref;
+    }
+    
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/CglibProxyFactory.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/CglibProxyFactory.java
new file mode 100644
index 0000000000..4fad747b3f
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/CglibProxyFactory.java
@@ -0,0 +1,138 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.core.invocation;
+
+import java.lang.reflect.Method;
+import java.util.List;
+
+import net.sf.cglib.proxy.Callback;
+import net.sf.cglib.proxy.Enhancer;
+import net.sf.cglib.proxy.Factory;
+import net.sf.cglib.proxy.MethodInterceptor;
+import net.sf.cglib.proxy.MethodProxy;
+
+import org.apache.tuscany.sca.core.context.ServiceReferenceImpl;
+import org.apache.tuscany.sca.interfacedef.InterfaceContractMapper;
+import org.apache.tuscany.sca.interfacedef.impl.InterfaceContractMapperImpl;
+import org.apache.tuscany.sca.invocation.MessageFactory;
+import org.apache.tuscany.sca.runtime.RuntimeWire;
+import org.osoa.sca.CallableReference;
+import org.osoa.sca.ServiceReference;
+
+/**
+ * The implementation of a wire service that uses cglib dynamic proxies
+ * 
+ * @version $Rev$ $Date$
+ */
+@SuppressWarnings("unused")
+public class CglibProxyFactory implements ProxyFactory {
+    private MessageFactory messageFactory;
+
+    public CglibProxyFactory() {
+        this(new MessageFactoryImpl(), new InterfaceContractMapperImpl());
+    }
+
+    public CglibProxyFactory(MessageFactory messageFactory, InterfaceContractMapper mapper) {
+        this.messageFactory = messageFactory;
+
+    }
+
+    public <T> T createProxy(Class<T> interfaze, RuntimeWire wire) throws ProxyCreationException {
+        Enhancer enhancer = new Enhancer();
+        enhancer.setSuperclass(interfaze);
+        enhancer.setCallback(new CglibMethodInterceptor<T>(interfaze, wire));
+        Object proxy = enhancer.create();
+        return interfaze.cast(proxy);
+    }
+
+    /**
+     * create the proxy with cglib. use the same JDKInvocationHandler as
+     * JDKProxyService.
+     */
+    public <T> T createProxy(CallableReference<T> callableReference) throws ProxyCreationException {
+        Enhancer enhancer = new Enhancer();
+        Class<T> interfaze = callableReference.getBusinessInterface();
+        enhancer.setSuperclass(interfaze);
+        enhancer.setCallback(new CglibMethodInterceptor<T>(callableReference));
+        Object proxy = enhancer.create();
+        return interfaze.cast(proxy);
+    }
+
+    /**
+     * create the callback proxy with cglib. use the same
+     * JDKCallbackInvocationHandler as JDKProxyService.
+     */
+    public <T> T createCallbackProxy(Class<T> interfaze, final List<RuntimeWire> wires) throws ProxyCreationException {
+        Enhancer enhancer = new Enhancer();
+        enhancer.setSuperclass(interfaze);
+        enhancer.setCallback(new CglibMethodInterceptor<T>(wires));
+        Object proxy = enhancer.create();
+        return interfaze.cast(proxy);
+    }
+
+    @SuppressWarnings("unchecked")
+    public <B, R extends CallableReference<B>> R cast(B target) throws IllegalArgumentException {
+        if (isProxyClass(target.getClass())) {
+            Factory factory = (Factory)target;
+            Callback[] callbacks = factory.getCallbacks();
+            if (callbacks.length != 1 || !(callbacks[0] instanceof CglibMethodInterceptor)) {
+                throw new IllegalArgumentException("The object is not a known proxy.");
+            }
+            CglibMethodInterceptor interceptor = (CglibMethodInterceptor)callbacks[0];
+            return (R)interceptor.invocationHandler.getCallableReference();
+        } else {
+            throw new IllegalArgumentException("The object is not a known proxy.");
+        }
+    }
+
+    /**
+     * @see org.apache.tuscany.sca.core.invocation.ProxyFactory#isProxyClass(java.lang.Class)
+     */
+    public boolean isProxyClass(Class<?> clazz) {
+        return Factory.class.isAssignableFrom(clazz);
+    }
+
+    private class CglibMethodInterceptor<T> implements MethodInterceptor {
+        private JDKInvocationHandler invocationHandler;
+
+        public CglibMethodInterceptor(CallableReference<T> callableReference) {
+            invocationHandler = new JDKInvocationHandler(messageFactory, callableReference);
+        }
+
+        public CglibMethodInterceptor(Class<T> interfaze, RuntimeWire wire) {
+            ServiceReference<T> serviceRef = new ServiceReferenceImpl<T>(interfaze, wire, CglibProxyFactory.this);
+            invocationHandler = new JDKInvocationHandler(messageFactory, serviceRef);
+        }
+
+        public CglibMethodInterceptor(List<RuntimeWire> wires) {
+            invocationHandler = new JDKCallbackInvocationHandler(messageFactory, wires);
+        }
+
+        /**
+         * @see net.sf.cglib.proxy.MethodInterceptor#intercept(java.lang.Object, java.lang.reflect.Method, java.lang.Object[], net.sf.cglib.proxy.MethodProxy)
+         */
+        public Object intercept(Object obj, Method method, Object[] args, MethodProxy proxy) throws Throwable {
+            Object result = invocationHandler.invoke(proxy, method, args);
+            return result;
+        }
+
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/DefaultProxyFactoryExtensionPoint.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/DefaultProxyFactoryExtensionPoint.java
new file mode 100644
index 0000000000..b40574394b
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/DefaultProxyFactoryExtensionPoint.java
@@ -0,0 +1,144 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.core.invocation;
+
+import java.util.List;
+
+import org.apache.tuscany.sca.interfacedef.InterfaceContractMapper;
+import org.apache.tuscany.sca.interfacedef.impl.InterfaceContractMapperImpl;
+import org.apache.tuscany.sca.invocation.MessageFactory;
+import org.apache.tuscany.sca.runtime.RuntimeWire;
+import org.osoa.sca.CallableReference;
+
+public class DefaultProxyFactoryExtensionPoint implements ProxyFactoryExtensionPoint {
+    private InterfaceContractMapper interfaceContractMapper;
+    private MessageFactory messageFactory;
+
+    private ProxyFactory interfaceFactory;
+    private ProxyFactory classFactory;
+
+    public DefaultProxyFactoryExtensionPoint() {
+        this(new MessageFactoryImpl(), new InterfaceContractMapperImpl());
+    }
+
+    public DefaultProxyFactoryExtensionPoint(MessageFactory messageFactory, InterfaceContractMapper mapper) {
+        this.interfaceContractMapper = mapper;
+        this.messageFactory = messageFactory;
+        interfaceFactory = new JDKProxyFactory(messageFactory, mapper);
+    }
+
+    /**
+     * @see org.apache.tuscany.sca.core.invocation.ProxyFactoryExtensionPoint#getClassProxyFactory()
+     */
+    public ProxyFactory getClassProxyFactory() {
+        return classFactory;
+    }
+
+    /**
+     * @see org.apache.tuscany.sca.core.invocation.ProxyFactoryExtensionPoint#getInterfaceProxyFactory()
+     */
+    public ProxyFactory getInterfaceProxyFactory() {
+        return interfaceFactory;
+    }
+
+    /**
+     * @see org.apache.tuscany.sca.core.invocation.ProxyFactoryExtensionPoint#setClassProxyFactory(org.apache.tuscany.sca.core.invocation.ProxyFactory)
+     */
+    public void setClassProxyFactory(ProxyFactory factory) {
+        this.classFactory = factory;
+
+    }
+
+    /**
+     * @see org.apache.tuscany.sca.core.invocation.ProxyFactoryExtensionPoint#setInterfaceProxyFactory(org.apache.tuscany.sca.core.invocation.ProxyFactory)
+     */
+    public void setInterfaceProxyFactory(ProxyFactory factory) {
+        this.interfaceFactory = factory;
+
+    }
+
+    /**
+     * @see org.apache.tuscany.sca.core.invocation.ProxyFactory#cast(java.lang.Object)
+     */
+    @SuppressWarnings("unchecked")
+    public <B, R extends CallableReference<B>> R cast(B target) throws IllegalArgumentException {
+        if (interfaceFactory.isProxyClass(target.getClass())) {
+            return (R)interfaceFactory.cast(target);
+        } else if (classFactory != null && classFactory.isProxyClass(target.getClass())) {
+            return (R)classFactory.cast(target);
+        } else {
+            throw new IllegalArgumentException("The target is not a callable proxy");
+        }
+    }
+
+    /**
+     * @see org.apache.tuscany.sca.core.invocation.ProxyFactory#createCallbackProxy(java.lang.Class,
+     *      java.util.List)
+     */
+    public <T> T createCallbackProxy(Class<T> interfaze, List<RuntimeWire> wires) throws ProxyCreationException {
+        if (interfaze.isInterface()) {
+            return interfaceFactory.createCallbackProxy(interfaze, wires);
+        } else {
+            return classFactory.createCallbackProxy(interfaze, wires);
+        }
+    }
+
+    public <T> T createProxy(CallableReference<T> callableReference) throws ProxyCreationException {
+        if (callableReference.getBusinessInterface().isInterface()) {
+            return interfaceFactory.createProxy(callableReference);
+        } else {
+            return classFactory.createProxy(callableReference);
+        }
+    }
+
+    /**
+     * @see org.apache.tuscany.sca.core.invocation.ProxyFactory#createProxy(java.lang.Class,
+     *      org.apache.tuscany.sca.runtime.RuntimeWire)
+     */
+    public <T> T createProxy(Class<T> interfaze, RuntimeWire wire) throws ProxyCreationException {
+        if (interfaze.isInterface()) {
+            return interfaceFactory.createProxy(interfaze, wire);
+        } else {
+            return classFactory.createProxy(interfaze, wire);
+        }
+    }
+
+    /**
+     * @see org.apache.tuscany.sca.core.invocation.ProxyFactory#isProxyClass(java.lang.Class)
+     */
+    public boolean isProxyClass(Class<?> clazz) {
+        return interfaceFactory.isProxyClass(clazz) || (classFactory != null && classFactory.isProxyClass(clazz));
+    }
+
+    /**
+     * @return the interfaceContractMapper
+     */
+    public InterfaceContractMapper getInterfaceContractMapper() {
+        return interfaceContractMapper;
+    }
+
+    /**
+     * @return the messageFactory
+     */
+    public MessageFactory getMessageFactory() {
+        return messageFactory;
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/ExtensibleWireProcessor.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/ExtensibleWireProcessor.java
new file mode 100644
index 0000000000..934f2f7aa0
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/ExtensibleWireProcessor.java
@@ -0,0 +1,44 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.tuscany.sca.core.invocation;
+
+import org.apache.tuscany.sca.runtime.RuntimeWire;
+import org.apache.tuscany.sca.runtime.RuntimeWireProcessor;
+import org.apache.tuscany.sca.runtime.RuntimeWireProcessorExtensionPoint;
+
+/**
+ * The default implementation of an extensible <code>WireProcessor</code>
+ *
+ * @version $Rev$ $Date$
+ */
+public class ExtensibleWireProcessor implements RuntimeWireProcessor {
+    
+    private RuntimeWireProcessorExtensionPoint processors;
+
+    public ExtensibleWireProcessor(RuntimeWireProcessorExtensionPoint processors) {
+        this.processors = processors;
+    }
+    
+    public void process(RuntimeWire wire) {
+        for (RuntimeWireProcessor processor : processors.getWireProcessors()) {
+            processor.process(wire);
+        }
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/InvocationChainImpl.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/InvocationChainImpl.java
new file mode 100644
index 0000000000..72ce0f87fb
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/InvocationChainImpl.java
@@ -0,0 +1,130 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.tuscany.sca.core.invocation;
+
+import org.apache.tuscany.sca.interfacedef.Operation;
+import org.apache.tuscany.sca.invocation.Interceptor;
+import org.apache.tuscany.sca.invocation.InvocationChain;
+import org.apache.tuscany.sca.invocation.Invoker;
+
+/**
+ * Default implementation of an invocation chain
+ * 
+ * @version $Rev$ $Date$
+ */
+public class InvocationChainImpl implements InvocationChain {
+    private Operation sourceOperation;
+    private Operation targetOperation;
+    private Invoker invokerChainHead;
+    private Invoker invokerChainTail;
+
+    public InvocationChainImpl(Operation operation) {
+        assert operation != null;
+        this.targetOperation = operation;
+        this.sourceOperation = operation;
+    }
+
+    public InvocationChainImpl(Operation sourceOperation, Operation targetOperation) {
+        assert sourceOperation != null;
+        assert targetOperation != null;
+        this.targetOperation = targetOperation;
+        this.sourceOperation = sourceOperation;
+    }
+
+    public Operation getTargetOperation() {
+        return targetOperation;
+    }
+
+    public void setTargetOperation(Operation operation) {
+        this.targetOperation = operation;
+    }
+
+    public void addInterceptor(Interceptor interceptor) {
+        if (invokerChainHead == null) {
+            invokerChainHead = interceptor;
+        } else {
+            if (invokerChainHead instanceof Interceptor) {
+                ((Interceptor)invokerChainTail).setNext(interceptor);
+            }
+        }
+        invokerChainTail = interceptor;
+    }
+
+    public void addInvoker(Invoker invoker) {
+        if (invokerChainHead == null) {
+            invokerChainHead = invoker;
+        } else {
+            if (invokerChainTail instanceof Interceptor) {
+                ((Interceptor)invokerChainTail).setNext(invoker);
+            }
+        }
+        invokerChainTail = invoker;
+    }
+
+    public Invoker getHeadInvoker() {
+        return invokerChainHead;
+    }
+
+    public Invoker getTailInvoker() {
+        return invokerChainTail;
+    }
+    
+    /**
+     * @return the sourceOperation
+     */
+    public Operation getSourceOperation() {
+        return sourceOperation;
+    }
+
+    /**
+     * @param sourceOperation the sourceOperation to set
+     */
+    public void setSourceOperation(Operation sourceOperation) {
+        this.sourceOperation = sourceOperation;
+    }
+
+    public void addInterceptor(int index, Interceptor interceptor) {
+        int i = 0;
+        Invoker next = invokerChainHead;
+        Invoker prev = null;
+        while (next != null && i < index) {
+            prev = next;
+            if (next instanceof Interceptor) {
+                next = ((Interceptor)next).getNext();
+                i++;
+            } else {
+                throw new ArrayIndexOutOfBoundsException(index);
+            }
+        }
+        if (i == index) {
+            if (prev != null) {
+                ((Interceptor)prev).setNext(interceptor);
+            } else {
+                invokerChainHead = interceptor;
+            }
+            interceptor.setNext(next);
+            if (next == null) {
+                invokerChainTail = interceptor;
+            }
+        } else {
+            throw new ArrayIndexOutOfBoundsException(index);
+        }
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/JDKCallbackInvocationHandler.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/JDKCallbackInvocationHandler.java
new file mode 100644
index 0000000000..9c6432682e
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/JDKCallbackInvocationHandler.java
@@ -0,0 +1,105 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.invocation;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.List;
+
+import org.apache.tuscany.sca.assembly.Binding;
+import org.apache.tuscany.sca.invocation.InvocationChain;
+import org.apache.tuscany.sca.invocation.Message;
+import org.apache.tuscany.sca.invocation.MessageFactory;
+import org.apache.tuscany.sca.runtime.RuntimeComponentReference;
+import org.apache.tuscany.sca.runtime.RuntimeWire;
+import org.osoa.sca.CallableReference;
+import org.osoa.sca.NoRegisteredCallbackException;
+
+/**
+ * Responsible for dispatching to a callback through a wire. <p/> TODO cache
+ * target invoker
+ * 
+ * @version $Rev$ $Date$
+ */
+public class JDKCallbackInvocationHandler extends JDKInvocationHandler {
+    private static final long serialVersionUID = -3350283555825935609L;
+    private transient List<RuntimeWire> wires;
+
+    public JDKCallbackInvocationHandler(MessageFactory messageFactory, List<RuntimeWire> wires) {
+        super(messageFactory, (CallableReference<?>) null);
+        this.wires = wires;
+    }
+
+    @Override
+    @SuppressWarnings( {"unchecked"})
+    public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
+        if (method.getParameterTypes().length == 0 && "toString".equals(method.getName())) {
+            return "[Proxy - " + Integer.toHexString(hashCode()) + "]";
+        } else if (method.getDeclaringClass().equals(Object.class) && "equals".equals(method.getName())) {
+            // TODO implement
+            throw new UnsupportedOperationException();
+        } else if (Object.class.equals(method.getDeclaringClass()) && "hashCode".equals(method.getName())) {
+            return hashCode();
+            // TODO beter hash algorithm
+        }
+
+        // wire not pre-selected, so select a wire now to be used for the callback
+        Message msgContext = ThreadMessageContext.getMessageContext();
+        RuntimeWire wire = CallbackWireObjectFactory.selectCallbackWire(msgContext, wires);
+        if (wire == null) {
+            //FIXME: need better exception
+            throw new RuntimeException("No callback wire found for " + msgContext.getFrom().getURI());
+        }
+        setConversational(wire);
+        callbackID = msgContext.getCorrelationID();
+        setEndpoint(msgContext.getFrom());
+        
+        
+        // need to set the endpoint on the binding also so that when the chains are created next
+        // the sca binding can decide whether to provide local or remote invokers. 
+        // TODO - there is a problem here though in that I'm setting a target on a 
+        //        binding that may possibly be trying to point at two things in the multi threaded 
+        //        case. Need to confirm the general model here and how the clone and bind part
+        //        is intended to work
+        wire.getSource().getBinding().setURI(msgContext.getFrom().getURI());
+        
+        // also need to set the target contract as it varies for the sca binding depending on 
+        // whether it is local or remote
+        RuntimeComponentReference ref = (RuntimeComponentReference)wire.getSource().getContract();
+        Binding binding = wire.getSource().getBinding();
+        wire.getTarget().setInterfaceContract(ref.getBindingProvider(binding).getBindingInterfaceContract());
+        
+        //FIXME: can we use the same code as JDKInvocationHandler to select the chain? 
+        InvocationChain chain = getInvocationChain(method, wire);
+        if (chain == null) {
+            throw new IllegalArgumentException("No matching operation is found: " + method);
+        }
+
+        try {
+            return invoke(chain, args, wire);
+        } catch (InvocationTargetException e) {
+            Throwable t = e.getCause();
+            if (t instanceof NoRegisteredCallbackException) {
+                throw t;
+            }
+            throw e;
+        }
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/JDKInvocationHandler.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/JDKInvocationHandler.java
new file mode 100644
index 0000000000..99a769f256
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/JDKInvocationHandler.java
@@ -0,0 +1,304 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.core.invocation;
+
+import java.io.Serializable;
+import java.lang.reflect.InvocationHandler;
+import java.lang.reflect.Method;
+import java.lang.reflect.Proxy;
+import java.util.List;
+import java.util.UUID;
+
+import org.apache.tuscany.sca.core.context.CallableReferenceImpl;
+import org.apache.tuscany.sca.core.context.ConversationImpl;
+import org.apache.tuscany.sca.interfacedef.ConversationSequence;
+import org.apache.tuscany.sca.interfacedef.DataType;
+import org.apache.tuscany.sca.interfacedef.Interface;
+import org.apache.tuscany.sca.interfacedef.InterfaceContract;
+import org.apache.tuscany.sca.interfacedef.Operation;
+import org.apache.tuscany.sca.invocation.InvocationChain;
+import org.apache.tuscany.sca.invocation.Invoker;
+import org.apache.tuscany.sca.invocation.Message;
+import org.apache.tuscany.sca.invocation.MessageFactory;
+import org.apache.tuscany.sca.runtime.EndpointReference;
+import org.apache.tuscany.sca.runtime.RuntimeWire;
+import org.osoa.sca.CallableReference;
+import org.osoa.sca.NoRegisteredCallbackException;
+import org.osoa.sca.ServiceReference;
+
+/**
+ * @version $Rev$ $Date$
+ */
+public class JDKInvocationHandler implements InvocationHandler, Serializable {
+    private static final long serialVersionUID = -3366410500152201371L;
+
+    protected boolean conversational;
+    protected ConversationImpl conversation;
+    protected boolean conversationStarted;
+    protected MessageFactory messageFactory;
+    protected EndpointReference endpoint;
+    protected Object callbackID;
+    protected Object callbackObject;
+    protected RuntimeWire wire;
+    protected CallableReference<?> callableReference;
+
+    public JDKInvocationHandler(MessageFactory messageFactory, RuntimeWire wire) {
+        this.messageFactory = messageFactory;
+        this.wire = wire;
+        setConversational(wire);
+    }
+    
+    public JDKInvocationHandler(MessageFactory messageFactory, CallableReference<?> callableReference) {
+        this.messageFactory = messageFactory;
+        this.callableReference = callableReference;
+        if (callableReference != null) {
+            this.callbackID = callableReference.getCallbackID();
+            this.conversation = (ConversationImpl)callableReference.getConversation();
+            this.wire = ((CallableReferenceImpl<?>)callableReference).getRuntimeWire();
+            if (callableReference instanceof ServiceReference) {
+                this.callbackObject = ((ServiceReference)callableReference).getCallback();
+            }
+            if (wire != null) {
+                setConversational(wire);
+            }
+        }
+    }
+
+    protected void setConversational(RuntimeWire wire) {
+        InterfaceContract contract = wire.getSource().getInterfaceContract();
+        this.conversational = contract.getInterface().isConversational();
+    }
+
+    public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
+        if (method.getParameterTypes().length == 0 && "toString".equals(method.getName())) {
+            return "[Proxy - " + Integer.toHexString(hashCode()) + "]";
+        } else if (method.getDeclaringClass().equals(Object.class) && "equals".equals(method.getName())) {
+            Object obj = args[0];
+            if (obj == null) {
+                return false;
+            }
+            if (!Proxy.isProxyClass(obj.getClass())) {
+                return false;
+            }
+            return equals(Proxy.getInvocationHandler(obj));
+        } else if (Object.class.equals(method.getDeclaringClass()) && "hashCode".equals(method.getName())) {
+            return hashCode();
+        }
+        if (wire == null) {
+            //FIXME: need better exception
+            throw new RuntimeException("Destination for call is not known");
+        }
+        InvocationChain chain = getInvocationChain(method, wire);
+        if (chain == null) {
+            throw new IllegalArgumentException("No matching operation is found: " + method);
+        }
+
+        // send the invocation down the wire
+        Object result = invoke(chain, args, wire);
+
+        return result;
+    }
+
+    /**
+     * Determines if the given operation matches the given method
+     * 
+     * @return true if the operation matches, false if does not
+     */
+    @SuppressWarnings("unchecked")
+    private static boolean match(Operation operation, Method method) {
+        Class<?>[] params = method.getParameterTypes();
+        DataType<List<DataType>> inputType = operation.getInputType();
+        List<DataType> types = inputType.getLogical();
+        boolean matched = true;
+        if (types.size() == params.length && method.getName().equals(operation.getName())) {
+            for (int i = 0; i < params.length; i++) {
+                Class<?> clazz = params[i];
+                if (!operation.getInputType().getLogical().get(i).getPhysical().isAssignableFrom(clazz)) {
+                    matched = false;
+                }
+            }
+        } else {
+            matched = false;
+        }
+        return matched;
+
+    }
+
+    protected InvocationChain getInvocationChain(Method method, RuntimeWire wire) {
+        for (InvocationChain chain : wire.getInvocationChains()) {
+            Operation operation = chain.getSourceOperation();
+            if (operation.isDynamic()) {
+                operation.setName(method.getName());
+                return chain;
+            } else if (match(operation, method)) {
+                return chain;
+            }
+        }
+        return null;
+    }
+
+    public void setEndpoint(EndpointReference endpoint) {
+        this.endpoint = endpoint;
+    }
+
+    public void setCallbackID(Object callbackID) {
+        this.callbackID = callbackID;
+    }
+
+    protected Object invoke(InvocationChain chain, Object[] args, RuntimeWire wire) throws Throwable {
+
+        Message msgContext = ThreadMessageContext.getMessageContext();
+        Object msgContextConversationId = msgContext.getConversationID();
+
+        Message msg = messageFactory.createMessage();
+
+        // make sure that the conversation id is set so it can be put in the 
+        // outgoing messages. The id can come from one of three places
+        // 1 - Generated here (if the source is stateless)
+        // 2 - Specified by the application (through a service reference)
+        // 3 - from the message context (if the source is stateful)
+        //
+        // TODO - number 3 seems a little shaky as we end up propagating
+        //        a conversationId through the source component. If we don't
+        //        do this though we can't correlate the callback call with the
+        //        current target instance. Currently specifying an application
+        //        conversationId in this case also means that the callback
+        //        can't be correlated with the source component instance 
+        if (conversational) {
+            if (conversation == null) {
+                // this is a callback so create a conversation to 
+                // hold onto the conversation state for the lifetime of the
+                // stateful callback
+                conversation = new ConversationImpl();
+            }
+            Object conversationId = conversation.getConversationID();
+
+            // create a conversation id if one doesn't exist 
+            // already, i.e. the conversation is just starting
+            if ((conversationStarted == false) && (conversationId == null)) {
+
+                // It the current component is already in a conversation
+                // the use this just in case this message has a stateful 
+                // callback. In which case the callback will come back
+                // to the correct instance. 
+                // TODO - we should always create a unique id here or
+                //        take the application defined conversation id. 
+                //        This implies we have to re-register the component 
+                //        instance against this 
+                if (msgContextConversationId == null) {
+                    conversationId = createConversationID();
+                } else {
+                    conversationId = msgContextConversationId;
+                }
+
+                conversation.setConversationID(conversationId);
+            }
+            //TODO - assuming that the conversation ID is a string here when
+            //       it can be any object that is serializable to XML
+            msg.setConversationID((String)conversationId);
+        }
+
+        Invoker headInvoker = chain.getHeadInvoker();
+        msg.setCorrelationID(callbackID);
+        Operation operation = chain.getTargetOperation();
+        msg.setOperation(operation);
+        Interface contract = operation.getInterface();
+        if (contract != null && contract.isConversational()) {
+            ConversationSequence sequence = operation.getConversationSequence();
+            if (sequence == ConversationSequence.CONVERSATION_END) {
+                msg.setConversationSequence(ConversationSequence.CONVERSATION_END);
+                conversationStarted = false;
+                if (conversation != null) {
+                    conversation.setConversationID(null);
+                }
+            } else if (sequence == ConversationSequence.CONVERSATION_CONTINUE) {
+                if (conversationStarted) {
+                    msg.setConversationSequence(ConversationSequence.CONVERSATION_CONTINUE);
+                } else {
+                    conversationStarted = true;
+                    msg.setConversationSequence(ConversationSequence.CONVERSATION_START);
+                }
+            }
+        }
+        msg.setBody(args);
+        if (wire.getSource() != null && wire.getSource().getCallbackEndpoint() != null) {
+            if (callbackObject != null) {
+                if (callbackObject instanceof ServiceReference) {
+                    msg.setFrom(((CallableReferenceImpl)callbackObject).getRuntimeWire().getTarget());
+                } else {
+                    if (contract != null) {
+                        if (!contract.isConversational()) {
+                            throw new NoRegisteredCallbackException(
+                                                                    "Callback object for stateless callback is not a ServiceReference");
+                        } else {
+                            //FIXME: add callback object to scope container
+                            msg.setFrom(wire.getSource().getCallbackEndpoint());
+                        }
+                    }
+                }
+            } else {
+                //FIXME: check that the source component implements the callback interface
+                msg.setFrom(wire.getSource().getCallbackEndpoint());
+            }
+        }
+        if (endpoint != null) {
+            msg.setTo(endpoint);
+        } else {
+            msg.setTo(wire.getTarget());
+        }
+
+        ThreadMessageContext.setMessageContext(msg);
+        try {
+            // dispatch the wire down the chain and get the response
+            Message resp = headInvoker.invoke(msg);
+            Object body = resp.getBody();
+            if (resp.isFault()) {
+                throw (Throwable)body;
+            }
+            return body;
+        } finally {
+            ThreadMessageContext.setMessageContext(msgContext);
+        }
+    }
+
+    /**
+     * Creates a new conversational id
+     * 
+     * @return the conversational id
+     */
+    private String createConversationID() {
+        return UUID.randomUUID().toString();
+    }
+
+    /**
+     * @return the callableReference
+     */
+    public CallableReference<?> getCallableReference() {
+        return callableReference;
+    }
+
+    /**
+     * @param callableReference the callableReference to set
+     */
+    public void setCallableReference(CallableReference<?> callableReference) {
+        this.callableReference = callableReference;
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/JDKProxyFactory.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/JDKProxyFactory.java
new file mode 100644
index 0000000000..9766286b56
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/JDKProxyFactory.java
@@ -0,0 +1,89 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.invocation;
+
+import java.lang.reflect.InvocationHandler;
+import java.lang.reflect.Proxy;
+import java.util.List;
+
+import org.apache.tuscany.sca.interfacedef.InterfaceContractMapper;
+import org.apache.tuscany.sca.interfacedef.impl.InterfaceContractMapperImpl;
+import org.apache.tuscany.sca.invocation.MessageFactory;
+import org.apache.tuscany.sca.runtime.RuntimeWire;
+import org.osoa.sca.CallableReference;
+
+/**
+ * the default implementation of a wire service that uses JDK dynamic proxies
+ * 
+ * @version $$Rev$$ $$Date: 2007-04-11 18:59:43 -0700 (Wed, 11 Apr
+ *          2007) $$
+ */
+public class JDKProxyFactory implements ProxyFactory {
+    protected InterfaceContractMapper contractMapper;
+    private MessageFactory messageFactory;
+
+    public JDKProxyFactory() {
+        this(new MessageFactoryImpl(), new InterfaceContractMapperImpl());
+    }
+
+    public JDKProxyFactory(MessageFactory messageFactory, InterfaceContractMapper mapper) {
+        this.contractMapper = mapper;
+        this.messageFactory = messageFactory;
+    }
+
+    /** 
+     * The original createProxy method assumes that the proxy doesn't want to 
+     * share conversation state so sets the conversaton object to null
+     */
+    public <T> T createProxy(Class<T> interfaze, RuntimeWire wire) throws ProxyCreationException {
+        JDKInvocationHandler handler = new JDKInvocationHandler(messageFactory, wire);
+        ClassLoader cl = interfaze.getClassLoader();
+        return interfaze.cast(Proxy.newProxyInstance(cl, new Class[] {interfaze}, handler));
+    }
+
+    public <T> T createProxy(CallableReference<T> callableReference) throws ProxyCreationException {
+        assert callableReference != null;
+        Class<T> interfaze = callableReference.getBusinessInterface();
+        JDKInvocationHandler handler = new JDKInvocationHandler(messageFactory, callableReference);
+        ClassLoader cl = interfaze.getClassLoader();
+        return interfaze.cast(Proxy.newProxyInstance(cl, new Class[] {interfaze}, handler));
+    }
+
+    public <T> T createCallbackProxy(Class<T> interfaze, List<RuntimeWire> wires) throws ProxyCreationException {
+        ClassLoader cl = interfaze.getClassLoader();
+        JDKCallbackInvocationHandler handler = new JDKCallbackInvocationHandler(messageFactory, wires);
+        return interfaze.cast(Proxy.newProxyInstance(cl, new Class[] {interfaze}, handler));
+    }
+
+    public <B, R extends CallableReference<B>> R cast(B target) throws IllegalArgumentException {
+        InvocationHandler handler = Proxy.getInvocationHandler(target);
+        if (handler instanceof JDKInvocationHandler) {
+            return (R)((JDKInvocationHandler)handler).getCallableReference();
+        } else {
+            throw new IllegalArgumentException("The object is not a known proxy.");
+        }
+    }
+
+    /**
+     * @see org.apache.tuscany.sca.core.invocation.ProxyFactory#isProxyClass(java.lang.Class)
+     */
+    public boolean isProxyClass(Class<?> clazz) {
+        return Proxy.isProxyClass(clazz);
+    }
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/MessageFactoryImpl.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/MessageFactoryImpl.java
new file mode 100644
index 0000000000..6e182a6a14
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/MessageFactoryImpl.java
@@ -0,0 +1,36 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.core.invocation;
+
+import org.apache.tuscany.sca.invocation.Message;
+import org.apache.tuscany.sca.invocation.MessageFactory;
+
+/**
+ * Implementation of MessageFactory.
+ *
+ * @version $Rev$ $Date$
+ */
+public class MessageFactoryImpl implements MessageFactory {
+
+    public Message createMessage() {
+        return new MessageImpl();
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/MessageImpl.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/MessageImpl.java
new file mode 100644
index 0000000000..379973af0d
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/MessageImpl.java
@@ -0,0 +1,126 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.invocation;
+
+import org.apache.tuscany.sca.interfacedef.ConversationSequence;
+import org.apache.tuscany.sca.interfacedef.Operation;
+import org.apache.tuscany.sca.invocation.Message;
+import org.apache.tuscany.sca.runtime.EndpointReference;
+
+/**
+ * The default implementation of a message flowed through a wire during an invocation
+ *
+ * @version $Rev $Date
+ */
+public class MessageImpl implements Message {
+    private Object body;
+    private Object messageID;
+    private Object correlationID;
+    private boolean isFault;
+    private ConversationSequence conversationSequence;
+    private String conversationId;
+    private Operation op;
+    
+    private EndpointReference from;
+    private EndpointReference to;
+
+    public MessageImpl(String conversationId, ConversationSequence conversationSequence, Object body) {
+        this.conversationId = conversationId;
+        this.conversationSequence = conversationSequence;
+        this.body = body;
+    }
+
+    public MessageImpl() {
+    }
+
+    @SuppressWarnings("unchecked")
+    public <T> T getBody() {
+        return (T) body;
+    }
+
+    public <T> void setBody(T body) {
+        this.isFault = false;
+        this.body = body;
+    }
+
+    public String getConversationID() {
+        return conversationId;
+    }
+
+    public void setConversationID(String conversationId) {
+        this.conversationId = conversationId;
+    }
+    
+    public ConversationSequence getConversationSequence() {
+        return conversationSequence;
+    }
+
+    public void setConversationSequence(ConversationSequence conversationSequence) {
+        this.conversationSequence = conversationSequence;
+    }
+
+    public Object getMessageID() {
+        return messageID;
+    }
+
+    public void setMessageID(Object messageId) {
+        this.messageID = messageId;
+    }
+
+    public Object getCorrelationID() {
+        return correlationID;
+    }
+
+    public void setCorrelationID(Object correlationId) {
+        this.correlationID = correlationId;
+    }
+
+    public boolean isFault() {
+        return isFault;
+    }
+
+    public void setFaultBody(Object fault) {
+        this.isFault = true;
+        this.body = fault;
+    }
+
+    public EndpointReference getFrom() {
+        return from;
+    }
+
+    public void setFrom(EndpointReference from) {
+        this.from = from;
+    }
+
+    public EndpointReference getTo() {
+        return to;
+    }
+
+    public void setTo(EndpointReference to) {
+        this.to = to;
+    }
+
+    public Operation getOperation() {
+        return op;
+    }
+
+    public void setOperation(Operation op) {
+        this.op = op;
+    }
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/NoMethodForOperationException.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/NoMethodForOperationException.java
new file mode 100644
index 0000000000..733544d387
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/NoMethodForOperationException.java
@@ -0,0 +1,43 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.tuscany.sca.core.invocation;
+
+
+/**
+ * Thrown when an {@link org.apache.tuscany.sca.core.factory.model.Operation} cannot be mapped to a method on an interface 
+ * @version $Rev$ $Date$
+ */
+public class NoMethodForOperationException extends ProxyCreationException {
+    private static final long serialVersionUID = 5116536602309483679L;
+
+    public NoMethodForOperationException() {
+    }
+
+    public NoMethodForOperationException(String message) {
+        super(message);
+    }
+
+    public NoMethodForOperationException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public NoMethodForOperationException(Throwable cause) {
+        super(cause);
+    }
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/NonBlockingInterceptor.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/NonBlockingInterceptor.java
new file mode 100644
index 0000000000..fcf708c00a
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/NonBlockingInterceptor.java
@@ -0,0 +1,183 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.tuscany.sca.core.invocation;
+
+import java.util.LinkedList;
+
+import org.apache.tuscany.sca.interfacedef.ConversationSequence;
+import org.apache.tuscany.sca.interfacedef.Operation;
+import org.apache.tuscany.sca.invocation.Interceptor;
+import org.apache.tuscany.sca.invocation.Invoker;
+import org.apache.tuscany.sca.invocation.Message;
+import org.apache.tuscany.sca.runtime.EndpointReference;
+import org.apache.tuscany.sca.runtime.RuntimeWire;
+import org.apache.tuscany.sca.work.WorkScheduler;
+import org.osoa.sca.ServiceRuntimeException;
+
+/**
+ * Adds non-blocking behavior to an invocation chain
+ *
+ * @version $$Rev$$ $$Date$$
+ */
+public class NonBlockingInterceptor implements Interceptor {
+
+    private static final Message RESPONSE = new ImmutableMessage();
+
+    private WorkScheduler workScheduler;
+    private Invoker next;
+
+    public NonBlockingInterceptor(WorkScheduler workScheduler) {
+        this.workScheduler = workScheduler;
+    }
+
+    public NonBlockingInterceptor(WorkScheduler workScheduler, Interceptor next) {
+        this.workScheduler = workScheduler;
+        this.next = next;
+    }
+
+    public Message invoke(final Message msg) {
+        // Retrieve conversation id to transfer to new thread
+        // Notice that we cannot clear the conversation id from the current thread
+        final String conversationID = ThreadMessageContext.getMessageContext().getConversationID();
+        // Schedule the invocation of the next interceptor in a new Work instance
+        try {
+            workScheduler.scheduleWork(new Runnable() {
+                public void run() {
+                    msg.setCorrelationID(null);
+                    // if we got a conversation id, transfer it to new thread
+                    if (conversationID != null) {
+                        msg.setConversationID(conversationID);
+                    }
+                    Message context = ThreadMessageContext.setMessageContext(msg);
+                    try {
+                        next.invoke(msg);
+                    } finally {
+                        ThreadMessageContext.setMessageContext(context);
+                    }
+                }
+            });
+        } catch (Exception e) {
+            throw new ServiceRuntimeException(e);
+        }
+        return RESPONSE;
+    }
+
+    public Invoker getNext() {
+        return next;
+    }
+
+    public void setNext(Invoker next) {
+        this.next = next;
+    }
+
+    /**
+     * A dummy message passed back on an invocation
+     */
+    private static class ImmutableMessage implements Message {
+
+        public String getConversationID() {
+            return null;
+        }
+
+        public RuntimeWire getWire() {
+            return null;
+        }
+
+        public void setConversationID(String conversationId) {
+            throw new UnsupportedOperationException();
+        }
+
+        public void setWire(RuntimeWire wire) {
+            throw new UnsupportedOperationException();
+        }
+
+        @SuppressWarnings("unchecked")
+        public Object getBody() {
+            return null;
+        }
+
+        public void setBody(Object body) {
+            if (body != null) {
+                throw new UnsupportedOperationException();
+            }
+        }
+
+        public void setCallbackWires(LinkedList<RuntimeWire> wires) {
+
+        }
+
+        public Object getMessageID() {
+            return null;
+        }
+
+        public void setMessageID(Object messageId) {
+            throw new UnsupportedOperationException();
+        }
+
+        public Object getCorrelationID() {
+            return null;
+        }
+
+        public void setCorrelationID(Object correlationId) {
+            throw new UnsupportedOperationException();
+        }
+
+        public boolean isFault() {
+            return false;
+        }
+
+        public void setFaultBody(Object fault) {
+            throw new UnsupportedOperationException();
+        }
+
+        public void setConversationSequence(ConversationSequence sequence) {
+            throw new UnsupportedOperationException();
+        }
+        
+        public ConversationSequence getConversationSequence() {
+            return null;
+        }
+
+        public EndpointReference getFrom() {
+            return null;
+        }
+
+        public EndpointReference getTo() {
+            return null;
+        }
+
+        public void setFrom(EndpointReference from) {
+            throw new UnsupportedOperationException();
+        }
+
+        public void setTo(EndpointReference to) {
+            throw new UnsupportedOperationException();
+        }
+
+        public Operation getOperation() {
+            return null;
+        }
+
+        public void setOperation(Operation op) {
+            throw new UnsupportedOperationException();
+        }
+
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/ProxyCreationException.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/ProxyCreationException.java
new file mode 100644
index 0000000000..c0646f577a
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/ProxyCreationException.java
@@ -0,0 +1,48 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.invocation;
+
+import org.apache.tuscany.sca.core.factory.ObjectCreationException;
+
+
+/**
+ * Denotes an error creating a proxy
+ *
+ * @version $$Rev$$ $$Date$$
+ */
+public class ProxyCreationException extends ObjectCreationException {
+    private static final long serialVersionUID = 8002454344828513781L;
+
+    public ProxyCreationException() {
+        super();
+    }
+
+    public ProxyCreationException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public ProxyCreationException(String message) {
+        super(message);
+    }
+
+    public ProxyCreationException(Throwable cause) {
+        super(cause);
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/ProxyFactory.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/ProxyFactory.java
new file mode 100644
index 0000000000..b72730397e
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/ProxyFactory.java
@@ -0,0 +1,78 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.invocation;
+
+import java.util.List;
+
+import org.apache.tuscany.sca.runtime.RuntimeWire;
+import org.osoa.sca.CallableReference;
+
+/**
+ * Creates proxies that implement Java interfaces and invocation handlers for fronting wires
+ *
+ * @version $$Rev$$ $$Date$$
+ */
+
+public interface ProxyFactory {
+
+    /**
+     * Creates a Java proxy for the given wire
+     *
+     * @param interfaze the interface the proxy implements
+     * @param wire      the wire to proxy
+     * @return the proxy
+     * @throws ProxyCreationException
+     */
+    <T> T createProxy(Class<T> interfaze, RuntimeWire wire) throws ProxyCreationException;
+
+    /**
+     * Creates a Java proxy for the given callable reference
+     *
+     * @param callableReference The callable reference
+     * @return the proxy
+     * @throws ProxyCreationException
+     */
+    <T> T createProxy(CallableReference<T> callableReference) throws ProxyCreationException;
+
+    /**
+     * Creates a Java proxy for the service contract callback
+     *
+     * @param interfaze the interface the proxy should implement
+     * @return the proxy
+     * @throws ProxyCreationException
+     */
+    <T> T createCallbackProxy(Class<T> interfaze, List<RuntimeWire> wires) throws ProxyCreationException;
+
+    /**
+     * Cast a proxy to a CallableReference.
+     *
+     * @param target a proxy generated by this implementation
+     * @return a CallableReference (or subclass) equivalent to this prozy
+     * @throws IllegalArgumentException if the object supplied is not a proxy
+     */
+    <B, R extends CallableReference<B>> R cast(B target) throws IllegalArgumentException;
+    
+    /**
+     * Test if a given class is a generated proxy class by this factory
+     * @param clazz A java class or interface
+     * @return true if the class is a generated proxy class by this factory 
+     */
+    boolean isProxyClass(Class<?> clazz);
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/ProxyFactoryExtensionPoint.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/ProxyFactoryExtensionPoint.java
new file mode 100644
index 0000000000..fdd710c465
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/ProxyFactoryExtensionPoint.java
@@ -0,0 +1,58 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.core.invocation;
+
+import org.apache.tuscany.sca.interfacedef.InterfaceContractMapper;
+
+/**
+ * The extension point to plug in proxy factories
+ * @version $Rev$ $Date$
+ */
+public interface ProxyFactoryExtensionPoint extends ProxyFactory {
+    /**
+     * Get the proxy factory for java interfaces
+     * @return
+     */
+    ProxyFactory getInterfaceProxyFactory();
+
+    /**
+     * Get the proxy factory for java classes
+     * @return
+     */
+    ProxyFactory getClassProxyFactory();
+
+    /**
+     * Set the proxy factory for java interfaces
+     * @param factory
+     */
+    void setInterfaceProxyFactory(ProxyFactory factory);
+
+    /**
+     * Set the proxy factory for java classes
+     * @param factory
+     */
+    void setClassProxyFactory(ProxyFactory factory);
+    
+    /**
+     * @return the interfaceContractMapper
+     */
+    InterfaceContractMapper getInterfaceContractMapper();
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/TargetInvocationException.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/TargetInvocationException.java
new file mode 100644
index 0000000000..2c4d657882
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/TargetInvocationException.java
@@ -0,0 +1,45 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.tuscany.sca.core.invocation;
+
+/**
+ * Raised when an error is encountered during a target invocation
+ *
+ * @version $Rev$ $Date$
+ */
+public class TargetInvocationException extends Exception {
+
+    private static final long serialVersionUID = -6553427708442761743L;
+
+    public TargetInvocationException() {
+        super();
+    }
+
+    public TargetInvocationException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public TargetInvocationException(String message) {
+        super(message);
+    }
+
+    public TargetInvocationException(Throwable cause) {
+        super(cause);
+    }
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/TargetInvokerCreationException.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/TargetInvokerCreationException.java
new file mode 100644
index 0000000000..354c3c34d9
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/TargetInvokerCreationException.java
@@ -0,0 +1,44 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.tuscany.sca.core.invocation;
+
+/**
+ * Denotes an error creating a target invoker
+ *
+ * @version $Rev$ $Date$
+ * @Deprecated
+ */
+public abstract class TargetInvokerCreationException extends Exception {
+
+    public TargetInvokerCreationException() {
+        super();
+    }
+
+    public TargetInvokerCreationException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public TargetInvokerCreationException(String message) {
+        super(message);
+    }
+
+    public TargetInvokerCreationException(Throwable cause) {
+        super(cause);
+    }
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/ThreadMessageContext.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/ThreadMessageContext.java
new file mode 100644
index 0000000000..f37e8182fa
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/ThreadMessageContext.java
@@ -0,0 +1,69 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.invocation;
+
+import org.apache.tuscany.sca.invocation.Message;
+
+/**
+ * Class for tunneling a WorkContext through the invocation of a user class.
+ *
+ * @version $Rev$ $Date$
+ */
+public final class ThreadMessageContext {
+
+    private static final ThreadLocal<Message> CONTEXT = new ThreadLocal<Message>() {
+        @Override
+        protected synchronized Message initialValue() {
+            return new MessageImpl();
+        }
+    };
+
+    private ThreadMessageContext() {
+    }
+
+    /**
+     * Set the WorkContext for the current thread.
+     * The current work context is returned and must be restored after the invocation is complete.
+     * Typical usage would be:
+     * <pre>
+     *   WorkContext old = PojoWorkContextTunnel.setThreadWorkContext(newContext);
+     *   try {
+     *      ... invoke user code ...
+     *   } finally {
+     *     PojoWorkContextTunnel.setThreadWorkContext(old);
+     *   }
+     * </pre>
+     * @param context
+     * @return the current work context for the thread; this must be restored after the invocation is made
+     */
+    public static Message setMessageContext(Message context) {
+        Message old = CONTEXT.get();
+        CONTEXT.set(context);
+        return old;
+    }
+
+    /**
+     * Returns the WorkContext for the current thread.
+     *
+     * @return the WorkContext for the current thread
+     */
+    public static Message getMessageContext() {
+        return CONTEXT.get();
+    }
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/WireObjectFactory.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/WireObjectFactory.java
new file mode 100644
index 0000000000..0a40d49b36
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/WireObjectFactory.java
@@ -0,0 +1,43 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.invocation;
+
+import org.apache.tuscany.sca.core.context.ServiceReferenceImpl;
+import org.apache.tuscany.sca.core.factory.ObjectFactory;
+import org.apache.tuscany.sca.runtime.RuntimeWire;
+
+/**
+ * Uses a wire to return an object instance
+ * 
+ * @version $Rev$ $Date$
+ */
+public class WireObjectFactory<T> extends ServiceReferenceImpl<T> implements ObjectFactory<T> {
+    /**
+     * Constructor.
+     * 
+     * @param interfaze the interface to inject on the client
+     * @param wire the backing wire
+     * @param proxyService the wire service to create the proxy
+     * @throws NoMethodForOperationException
+     */
+    public WireObjectFactory(Class<T> interfaze, RuntimeWire wire, ProxyFactory proxyService) {
+        super(interfaze, wire, proxyService);
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/AbstractScopeContainer.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/AbstractScopeContainer.java
new file mode 100644
index 0000000000..c39b39d491
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/AbstractScopeContainer.java
@@ -0,0 +1,191 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.scope;
+
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+import org.apache.tuscany.sca.core.context.InstanceWrapper;
+import org.apache.tuscany.sca.event.Event;
+import org.apache.tuscany.sca.provider.ImplementationProvider;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+
+/**
+ * Implements functionality common to scope contexts.
+ * 
+ * @version $Rev$ $Date$
+ */
+public abstract class AbstractScopeContainer<KEY> implements ScopeContainer<KEY> {
+    protected Map<KEY, InstanceWrapper<?>> wrappers = new ConcurrentHashMap<KEY, InstanceWrapper<?>>();
+    protected final Scope scope;
+
+    protected RuntimeComponent component;
+    protected volatile int lifecycleState = UNINITIALIZED;
+
+
+    public AbstractScopeContainer(Scope scope, RuntimeComponent component) {
+        this.scope = scope;
+        this.component = component;
+    }
+
+    protected void checkInit() {
+        if (getLifecycleState() != RUNNING) {
+            throw new IllegalStateException("Scope container not running [" + getLifecycleState() + "]");
+        }
+    }
+
+    /**
+     * Creates a new physical instance of a component, wrapped in an
+     * InstanceWrapper.
+     * 
+     * @param component the component whose instance should be created
+     * @return a wrapped instance that has been injected but not yet started
+     * @throws TargetResolutionException if there was a problem creating the
+     *             instance
+     */
+    protected InstanceWrapper createInstanceWrapper() throws TargetResolutionException {
+        ImplementationProvider implementationProvider = component.getImplementationProvider();
+        if (implementationProvider instanceof ScopedImplementationProvider) {
+            return ((ScopedImplementationProvider)implementationProvider).createInstanceWrapper();
+        }
+        return null;
+    }
+
+    public InstanceWrapper getAssociatedWrapper(KEY contextId) throws TargetResolutionException {
+        return getWrapper(contextId); // TODO: what is this method spossed to do diff than getWrapper? 
+    }
+
+    public Scope getScope() {
+        return scope;
+    }
+
+    public InstanceWrapper getWrapper(KEY contextId) throws TargetResolutionException {
+        return wrappers.get(contextId);
+    }
+
+    public void onEvent(Event event) {
+    }
+
+    protected boolean isEagerInit() {
+        ImplementationProvider implementationProvider = ((RuntimeComponent)component).getImplementationProvider();
+        if (implementationProvider instanceof ScopedImplementationProvider) {
+            return ((ScopedImplementationProvider)implementationProvider).isEagerInit();
+        }
+        return false;
+    }
+
+    public void returnWrapper(InstanceWrapper wrapper, KEY contextId) throws TargetDestructionException {
+    }
+    
+    /**
+     * Default implmentation of remove which does nothing 
+     * 
+     * @param contextId the identifier of the context to remove. 
+     */
+    public void remove(KEY contextId) 
+        throws TargetDestructionException {
+    }    
+
+    public synchronized void start() {
+        int lifecycleState = getLifecycleState();
+        if (lifecycleState != UNINITIALIZED && lifecycleState != STOPPED) {
+            throw new IllegalStateException("Scope must be in UNINITIALIZED or STOPPED state [" + lifecycleState + "]");
+        }
+        setLifecycleState(RUNNING);
+    }
+
+    public void startContext(KEY contextId) {
+        if(isEagerInit()) {
+            try {
+                getWrapper(contextId);
+            } catch (TargetResolutionException e) {
+                // 
+            }
+        }
+    }
+
+    public synchronized void stop() {
+        int lifecycleState = getLifecycleState();
+        if (lifecycleState != RUNNING) {
+            throw new IllegalStateException("Scope in wrong state [" + lifecycleState + "]");
+        }
+        setLifecycleState(STOPPED);
+    }
+
+    public void stopContext(KEY contextId) {
+        wrappers.remove(contextId);
+    }
+
+    @Override
+    public String toString() {
+        String s;
+        switch (lifecycleState) {
+            case ScopeContainer.CONFIG_ERROR:
+                s = "CONFIG_ERROR";
+                break;
+            case ScopeContainer.ERROR:
+                s = "ERROR";
+                break;
+            case ScopeContainer.INITIALIZING:
+                s = "INITIALIZING";
+                break;
+            case ScopeContainer.INITIALIZED:
+                s = "INITIALIZED";
+                break;
+            case ScopeContainer.RUNNING:
+                s = "RUNNING";
+                break;
+            case ScopeContainer.STOPPING:
+                s = "STOPPING";
+                break;
+            case ScopeContainer.STOPPED:
+                s = "STOPPED";
+                break;
+            case ScopeContainer.UNINITIALIZED:
+                s = "UNINITIALIZED";
+                break;
+            default:
+                s = "UNKNOWN";
+                break;
+        }
+        return "In state [" + s + ']';
+    }
+
+    public RuntimeComponent getComponent() {
+        return component;
+    }
+
+    public void setComponent(RuntimeComponent component) {
+        this.component = component;
+    }
+
+    public int getLifecycleState() {
+        return lifecycleState;
+    }
+
+    /**
+     * Set the current state of the Lifecycle.
+     *
+     * @param lifecycleState the new state
+     */
+    protected void setLifecycleState(int lifecycleState) {
+        this.lifecycleState = lifecycleState;
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/CompositeScopeContainer.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/CompositeScopeContainer.java
new file mode 100644
index 0000000000..80c27aca1b
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/CompositeScopeContainer.java
@@ -0,0 +1,70 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.scope;
+
+import org.apache.tuscany.sca.core.context.InstanceWrapper;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+
+/**
+ * A scope context which manages atomic component instances keyed by composite
+ * 
+ * @version $Rev$ $Date$
+ */
+public class CompositeScopeContainer<KEY> extends AbstractScopeContainer<KEY> {
+    private InstanceWrapper<?> wrapper;
+
+    public CompositeScopeContainer(RuntimeComponent component) {
+        super(Scope.COMPOSITE, component);
+    }
+
+    @Override
+    public synchronized void stop() {
+        super.stop();
+        wrapper = null;
+    }
+
+    @Override
+    public synchronized InstanceWrapper getWrapper(KEY contextId) throws TargetResolutionException {
+        if (wrapper == null) {
+            wrapper = createInstanceWrapper();
+            wrapper.start();
+        }
+        return wrapper;
+    }
+
+    @Override
+    public InstanceWrapper getAssociatedWrapper(KEY contextId) throws TargetResolutionException {
+        if (wrapper == null) {
+            throw new TargetNotFoundException(component.getURI());
+        }
+        return wrapper;
+    }
+
+    @Override
+    public synchronized void start() {
+        super.start();
+        if(isEagerInit()) {
+            try {
+                getWrapper(null);
+            } catch (TargetResolutionException e) {
+                throw new IllegalStateException(e);
+            }
+        }
+    }
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/CompositeScopeContainerFactory.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/CompositeScopeContainerFactory.java
new file mode 100644
index 0000000000..786988613b
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/CompositeScopeContainerFactory.java
@@ -0,0 +1,37 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.core.scope;
+
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+
+/**
+ * @version $Rev$ $Date$
+ */
+public class CompositeScopeContainerFactory implements ScopeContainerFactory {
+
+    public ScopeContainer createScopeContainer(RuntimeComponent component) {
+        return new CompositeScopeContainer(component);
+    }
+
+    public Scope getScope() {
+        return Scope.COMPOSITE;
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/ConversationalScopeContainer.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/ConversationalScopeContainer.java
new file mode 100644
index 0000000000..26f4544d14
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/ConversationalScopeContainer.java
@@ -0,0 +1,289 @@
+/*

+ * Licensed to the Apache Software Foundation (ASF) under one

+ * or more contributor license agreements.  See the NOTICE file

+ * distributed with this work for additional information

+ * regarding copyright ownership.  The ASF licenses this file

+ * to you under the Apache License, Version 2.0 (the

+ * "License"); you may not use this file except in compliance

+ * with the License.  You may obtain a copy of the License at

+ * 

+ *   http://www.apache.org/licenses/LICENSE-2.0

+ * 

+ * Unless required by applicable law or agreed to in writing,

+ * software distributed under the License is distributed on an

+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

+ * KIND, either express or implied.  See the License for the

+ * specific language governing permissions and limitations

+ * under the License.    

+ */

+

+

+package org.apache.tuscany.sca.core.scope;

+

+import java.util.Iterator;

+import java.util.Map;

+import java.util.UUID;

+import java.util.concurrent.ConcurrentHashMap;

+import java.util.concurrent.Executors;

+import java.util.concurrent.ScheduledExecutorService;

+import java.util.concurrent.TimeUnit;

+

+import org.apache.tuscany.sca.core.context.InstanceWrapper;

+import org.apache.tuscany.sca.core.invocation.ThreadMessageContext;

+import org.apache.tuscany.sca.invocation.Message;

+import org.apache.tuscany.sca.runtime.RuntimeComponent;

+import org.apache.tuscany.sca.store.Store;

+import org.osoa.sca.ConversationEndedException;

+

+/**

+ * A scope context which manages atomic component instances keyed on ConversationID

+ *  

+ */

+public class ConversationalScopeContainer extends AbstractScopeContainer<Object> {      

+        

+    private Map<Object, InstanceLifeCycleWrapper> instanceLifecycleCollection = new ConcurrentHashMap<Object, InstanceLifeCycleWrapper>();

+    

+    //TODO: This needs to observe the value set by ConversationalAttributes for now we will hard code it. 

+    private long max_age = 60 * 60 *  1000;  // 1 hour;

+    private long max_idle_time = 60 * 60 *  1000;  // 1 hour;

+    private long reaper_interval = 60;  // every minute; 

+    private ScheduledExecutorService scheduler;

+    

+    public ConversationalScopeContainer(Store aStore, RuntimeComponent component) {

+        super(Scope.CONVERSATION, component); 

+        

+        // Note: aStore is here to preserve the original factory interface. It is not currently used in this 

+        // implemenation since we do not support instance persistence.

+        

+        // Check System properties to see if timeout values have been specified. All timeout values 

+        // will be specifed in seconds.

+        //

+        String aProperty; 

+        aProperty = System.getProperty("org.apache.tuscany.sca.core.scope.ConversationalScopeContainer.MaxIdleTime");

+        if (aProperty != null)

+          try 

+           {

+                max_idle_time = (new Long(aProperty) * 1000);   

+           }

+           catch (NumberFormatException nfe) {};

+           

+        aProperty = System.getProperty("org.apache.tuscany.sca.core.scope.ConversationalScopeContainer.MaxAge");

+        if (aProperty != null)

+            try 

+             {

+                  max_age = (new Long(aProperty) * 1000);   

+             }

+             catch (NumberFormatException nfe) {};

+             

+        aProperty = System.getProperty("org.apache.tuscany.sca.core.scope.ConversationalScopeContainer.ReaperInterval");

+        if (aProperty != null)

+            try 

+             {

+                  reaper_interval = new Long(aProperty);   

+             }

+             catch (NumberFormatException nfe) {};

+           

+             

+        // Check to see if the maxAge and/or maxIdleTime have been specified using @ConversationAttributes.  

+        // Implementation annoated attributes are honored first.

+        if (this.getComponent().getImplementationProvider() instanceof ScopedImplementationProvider) 

+         {

+            ScopedImplementationProvider aScopedImpl = (ScopedImplementationProvider) this.getComponent().getImplementationProvider();

+            

+            long maxAge = aScopedImpl.getMaxAge();

+            if (maxAge > 0) {

+                max_age = maxAge;

+            }

+            long maxIdleTime = aScopedImpl.getMaxIdleTime();

+            if (maxIdleTime > 0 ) {

+                max_idle_time = maxIdleTime;

+            }

+         }                      

+

+    }    

+    

+

+    @Override

+    public synchronized void start() {

+        if (lifecycleState != UNINITIALIZED && lifecycleState != STOPPED) {

+            throw new IllegalStateException("Scope must be in UNINITIALIZED or STOPPED state [" + lifecycleState + "]");

+        }

+

+        // Get a scheduler and scheduled a task to be run in the future indefinitely until its explicitly shutdown. 

+        this.scheduler = Executors.newSingleThreadScheduledExecutor();

+        scheduler.scheduleAtFixedRate(new ConversationalInstanceReaper(this.instanceLifecycleCollection), 3, reaper_interval, TimeUnit.SECONDS);

+        

+        lifecycleState = RUNNING;        

+       }

+

+    @Override

+    public synchronized void stop() {

+        

+        // Prevent the scheduler from submitting any additional reapers, initiate an orderly shutdown if a reaper task is in progress. 

+        if (this.scheduler != null) 

+                this.scheduler.shutdown(); 

+        

+        lifecycleState = STOPPED;

+    }

+

+    protected InstanceWrapper getInstanceWrapper(boolean create,Object contextId) throws TargetResolutionException {    

+        

+        // we might get a null context if the target service has

+        // conversational scope but only its callback interface 

+        // is conversational. In this case we need to invent a 

+        // conversation Id here to store the service against

+        // and populate the thread context

+        if (contextId == null){

+            contextId = UUID.randomUUID().toString();

+            Message msgContext = ThreadMessageContext.getMessageContext();

+            

+            if (msgContext != null){

+                msgContext.setConversationID(contextId.toString());

+            }

+            

+        }

+        

+        InstanceLifeCycleWrapper anInstanceWrapper = this.instanceLifecycleCollection.get(contextId);

+        

+        if (anInstanceWrapper == null && !create)

+                return null;

+        

+        if (anInstanceWrapper == null) 

+        {

+            anInstanceWrapper = new InstanceLifeCycleWrapper(contextId);  

+            this.instanceLifecycleCollection.put(contextId, anInstanceWrapper);

+        }

+        // If an existing intsance is found return it only if its not expired and update its 

+        // last referenced time. 

+        else

+        {

+          if (anInstanceWrapper.isExpired())

+             throw new ConversationEndedException();

+          anInstanceWrapper.updateLastReferencedTime();

+        }

+        

+        return anInstanceWrapper.getInstanceWrapper();          

+                      

+    }

+    

+    @Override

+    public InstanceWrapper getWrapper(Object contextId) throws TargetResolutionException {

+        return getInstanceWrapper(true,contextId);

+    } 

+    

+    

+    // The remove is invoked when a conversation is explicitly ended.  This can occur by using the @EndsConversation or API.  

+    // In this case the instance is immediately removed.  A new conversation will be started on the next operation

+    // associated with this conversationId's service reference. 

+    //

+    @Override

+    public void remove(Object contextId) throws TargetDestructionException {

+        if (this.instanceLifecycleCollection.containsKey(contextId)) 

+        {

+         InstanceLifeCycleWrapper anInstanceLifeCycleWrapper = this.instanceLifecycleCollection.get(contextId);

+         this.instanceLifecycleCollection.remove(contextId);

+         anInstanceLifeCycleWrapper.removeInstanceWrapper();

+        } 

+    }  

+       

+    

+    /*

+     *  This is an inner class that keeps track of the lifecycle of a conversation scoped

+     *  implementation instance.   

+     * 

+     */

+    

+    private class InstanceLifeCycleWrapper 

+    {

+        private Object instanceId;

+        private long   creationTime;

+        private long   lastReferencedTime;

+        private long   expirationInterval;

+        private long   maxIdleTime;

+        

+        private InstanceLifeCycleWrapper(Object contextId) throws TargetResolutionException

+        {

+         this.instanceId = contextId;

+         this.creationTime = System.currentTimeMillis();

+         this.lastReferencedTime = this.creationTime;

+         this.expirationInterval = max_age;

+         this.maxIdleTime = max_idle_time;

+         this.createInstance();

+        }

+        

+        private boolean isExpired() 

+        {               

+         long currentTime = System.currentTimeMillis(); 

+         if ((this.lastReferencedTime +  this.maxIdleTime) < currentTime) // max idle time exceeded

+             return true;

+         if ((this.creationTime + this.expirationInterval) < currentTime) // max time to live exceeded

+             return true;

+             

+         return false;

+        }

+        

+        private void updateLastReferencedTime() 

+        {

+         this.lastReferencedTime = System.currentTimeMillis();

+        }

+        

+        //

+        // Return the backing implementation instance  

+        //

+        private InstanceWrapper getInstanceWrapper()

+        {

+          InstanceWrapper ctx = wrappers.get(this.instanceId);

+          return ctx;

+        }

+        

+        private void removeInstanceWrapper() throws TargetDestructionException 

+        {

+          InstanceWrapper ctx =  getInstanceWrapper();

+          ctx.stop();

+          wrappers.remove(this.instanceId);       

+        }

+        

+        private void createInstance() throws TargetResolutionException 

+        {

+            InstanceWrapper instanceWrapper = createInstanceWrapper();

+            instanceWrapper.start();

+            wrappers.put(this.instanceId, instanceWrapper);       

+        }

+        

+    }

+    

+    //

+    // This inner class is an instance reaper.  It periodically iterates over the InstanceLifeCycleCollection

+    // and for any instances that have expired removes the backing instance and the entry in the InstanceLifeCycle 

+    // Collection.

+    //

+    class ConversationalInstanceReaper implements Runnable 

+    {

+        private Map<Object, InstanceLifeCycleWrapper> instanceLifecycleCollection;

+        

+        public ConversationalInstanceReaper(Map<Object, InstanceLifeCycleWrapper> aMap)

+        {

+         this.instanceLifecycleCollection = aMap;

+        }

+        

+        public void run()

+        {

+          Iterator<Map.Entry<Object,InstanceLifeCycleWrapper>> anIterator = this.instanceLifecycleCollection.entrySet().iterator();             

+        

+          while (anIterator.hasNext())

+          {

+                Map.Entry<Object,InstanceLifeCycleWrapper> anEntry = anIterator.next();   

+            InstanceLifeCycleWrapper anInstanceLifeCycleWrapper = anEntry.getValue();

+            if (anInstanceLifeCycleWrapper.isExpired())

+            {

+              try {

+                  anInstanceLifeCycleWrapper.removeInstanceWrapper();

+                  this.instanceLifecycleCollection.remove(anInstanceLifeCycleWrapper.instanceId);

+              } catch (Exception ex) {

+                  // TODO - what to do with any asynchronous exceptions?

+              }

+            }

+          }             

+        }

+    }

+}

diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/ConversationalScopeContainerFactory.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/ConversationalScopeContainerFactory.java
new file mode 100644
index 0000000000..a6663aba09
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/ConversationalScopeContainerFactory.java
@@ -0,0 +1,44 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.core.scope;
+
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+import org.apache.tuscany.sca.store.Store;
+
+/**
+ * @version $Rev$ $Date$
+ */
+public class ConversationalScopeContainerFactory implements ScopeContainerFactory {
+    private Store store;
+
+    public ConversationalScopeContainerFactory(Store store) {
+        super();
+        this.store = store;
+    }
+
+    public ScopeContainer createScopeContainer(RuntimeComponent component) {
+        return new ConversationalScopeContainer(store, component);
+    }
+
+    public Scope getScope() {
+        return Scope.CONVERSATION;
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/HttpSessionScopeContainer.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/HttpSessionScopeContainer.java
new file mode 100644
index 0000000000..5ae8b94647
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/HttpSessionScopeContainer.java
@@ -0,0 +1,83 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.scope;
+
+import org.apache.tuscany.sca.core.context.InstanceWrapper;
+import org.apache.tuscany.sca.core.event.HttpSessionEnd;
+import org.apache.tuscany.sca.event.Event;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+
+/**
+ * A scope context which manages atomic component instances keyed on HTTP
+ * session
+ * 
+ * @version $Rev$ $Date$
+ */
+public class HttpSessionScopeContainer extends AbstractScopeContainer<Object> {
+
+    public HttpSessionScopeContainer(RuntimeComponent component) {
+        super(Scope.SESSION, component);
+    }
+
+    @Override
+    public void onEvent(Event event) {
+        checkInit();
+        if (event instanceof HttpSessionEnd) {
+            //FIXME key is not used
+            //Object key = ((HttpSessionEnd)event).getSessionID();
+            // FIXME: Remove the session id
+        }
+    }
+
+    @Override
+    public synchronized void start() {
+        if (lifecycleState != UNINITIALIZED && lifecycleState != STOPPED) {
+            throw new IllegalStateException("Scope must be in UNINITIALIZED or STOPPED state [" + lifecycleState + "]");
+        }
+        lifecycleState = RUNNING;
+    }
+
+    @Override
+    public synchronized void stop() {
+        lifecycleState = STOPPED;
+    }
+
+    protected InstanceWrapper getInstanceWrapper(boolean create) throws TargetResolutionException {
+//        Object key = workContext.getIdentifier(Scope.SESSION);
+        // FIXME: Need to fix this
+        Object key ="http-session-id";
+        assert key != null : "HTTP session key not bound in work context";
+        InstanceWrapper ctx = wrappers.get(key);
+        if (ctx == null && !create) {
+            return null;
+        }
+        if (ctx == null) {
+            ctx = super.createInstanceWrapper();
+            ctx.start();
+            wrappers.put(key, ctx);
+        }
+        return ctx;
+    }
+    
+    @Override
+    public InstanceWrapper getWrapper(Object contextId) throws TargetResolutionException {
+        return getInstanceWrapper(true);
+    }    
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/HttpSessionScopeContainerFactory.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/HttpSessionScopeContainerFactory.java
new file mode 100644
index 0000000000..49f89661b1
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/HttpSessionScopeContainerFactory.java
@@ -0,0 +1,41 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.core.scope;
+
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+
+/**
+ * @version $Rev$ $Date$
+ */
+public class HttpSessionScopeContainerFactory implements ScopeContainerFactory {
+
+    public HttpSessionScopeContainerFactory() {
+        super();
+    }
+
+    public ScopeContainer createScopeContainer(RuntimeComponent component) {
+        return new HttpSessionScopeContainer(component);
+    }
+
+    public Scope getScope() {
+        return Scope.SESSION;
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/RequestScopeContainer.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/RequestScopeContainer.java
new file mode 100644
index 0000000000..f11a61e662
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/RequestScopeContainer.java
@@ -0,0 +1,86 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.scope;
+
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+import org.apache.tuscany.sca.core.context.InstanceWrapper;
+import org.apache.tuscany.sca.core.event.RequestEnd;
+import org.apache.tuscany.sca.event.Event;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+
+/**
+ * A scope context which manages atomic component instances keyed on the current
+ * request context
+ * 
+ * @version $Rev$ $Date$
+ */
+public class RequestScopeContainer extends AbstractScopeContainer<Thread> {
+    private final Map<Thread, InstanceWrapper> contexts;
+
+    public RequestScopeContainer(RuntimeComponent component) {
+        super(Scope.REQUEST, component);
+        contexts = new ConcurrentHashMap<Thread, InstanceWrapper>();
+    }
+
+    @Override
+    public void onEvent(Event event) {
+        checkInit();
+        if (event instanceof RequestEnd) {
+            // shutdownInstances(Thread.currentThread());
+        }
+    }
+
+    @Override
+    public synchronized void start() {
+        if (lifecycleState != UNINITIALIZED && lifecycleState != STOPPED) {
+            throw new IllegalStateException("Scope must be in UNINITIALIZED or STOPPED state [" + lifecycleState + "]");
+        }
+        lifecycleState = RUNNING;
+    }
+
+    @Override
+    public synchronized void stop() {
+        contexts.clear();
+        // synchronized (destroyQueues) {
+        // destroyQueues.clear();
+        // }
+        lifecycleState = STOPPED;
+    }
+
+    protected InstanceWrapper getInstanceWrapper(boolean create) throws TargetResolutionException {
+        InstanceWrapper ctx = wrappers.get(Thread.currentThread());
+        if (ctx == null && !create) {
+            return null;
+        }
+        if (ctx == null) {
+            ctx = super.createInstanceWrapper();
+            ctx.start();
+            wrappers.put(Thread.currentThread(), ctx);
+        }
+        return ctx;
+    }
+
+    @Override
+    public InstanceWrapper getWrapper(Thread contextId) throws TargetResolutionException {
+        return getInstanceWrapper(true);
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/RequestScopeContainerFactory.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/RequestScopeContainerFactory.java
new file mode 100644
index 0000000000..1cfb6b06a4
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/RequestScopeContainerFactory.java
@@ -0,0 +1,37 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.core.scope;
+
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+
+/**
+ * @version $Rev$ $Date$
+ */
+public class RequestScopeContainerFactory implements ScopeContainerFactory {
+
+    public ScopeContainer createScopeContainer(RuntimeComponent component) {
+        return new RequestScopeContainer(component);
+    }
+
+    public Scope getScope() {
+        return Scope.REQUEST;
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/Scope.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/Scope.java
new file mode 100644
index 0000000000..0a20d793f7
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/Scope.java
@@ -0,0 +1,66 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.scope;
+
+/**
+ * The default implementation scopes supported by assemblies.
+ *
+ * @version $Rev$ $Date$
+ */
+public class Scope {
+    public static final Scope STATELESS = new Scope("STATELESS");
+    public static final Scope REQUEST = new Scope("REQUEST");
+    public static final Scope SESSION = new Scope("SESSION");
+    public static final Scope CONVERSATION = new Scope("CONVERSATION");
+    public static final Scope COMPOSITE = new Scope("COMPOSITE");
+    public static final Scope SYSTEM = new Scope("SYSTEM");
+    public static final Scope UNDEFINED = new Scope("UNDEFINED");
+
+    private String scope;
+
+    public Scope(String scope) {
+        this.scope = scope.toUpperCase().intern();
+    }
+
+    public String getScope() {
+        return scope;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        final Scope scope1 = (Scope) o;
+        return !(scope != null ? scope != scope1.scope.intern() : scope1.scope != null);
+    }
+
+    @Override
+    public int hashCode() {
+        return scope != null ? scope.hashCode() : 0;
+    }
+
+    @Override
+    public String toString() {
+        return scope;
+    }
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/ScopeContainer.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/ScopeContainer.java
new file mode 100644
index 0000000000..cd0deb4900
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/ScopeContainer.java
@@ -0,0 +1,139 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.scope;
+
+import org.apache.tuscany.sca.core.context.InstanceWrapper;
+import org.apache.tuscany.sca.event.RuntimeEventListener;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+
+
+/**
+ * Manages the lifecycle and visibility of instances associated with a an {@link RuntimeComponent}.
+ *
+ * @version $Rev$ $Date$
+ * @param <KEY> the type of IDs that this container uses to identify its contexts.
+ * For example, for COMPOSITE scope this could be the URI of the composite component,
+ * or for HTTP Session scope it might be the HTTP session ID.
+ */
+public interface ScopeContainer<KEY> extends RuntimeEventListener {
+
+    /**
+     * Returns the Scope that this container supports.
+     *
+     * @return the Scope that this container supports
+     */
+    Scope getScope();
+
+    /**
+     * Start a new context with the supplied ID.
+     *
+     * @param contextId an ID that uniquely identifies the context.
+     */
+    void startContext(KEY contextId);
+
+    /**
+     * Stop the context with the supplied ID.
+     *
+     * @param contextId an ID that uniquely identifies the context.
+     */
+    void stopContext(KEY contextId);
+
+    /**
+     * Returns an instance wrapper associated with the current scope context, creating one if necessary
+     * @param contextId the id for the scope context
+     *
+     * @return the wrapper for the target instance
+     * @throws TargetResolutionException if there was a problem instantiating the target instance
+     */
+     InstanceWrapper getWrapper(KEY contextId) throws TargetResolutionException;
+
+    /**
+     * Returns an implementation instance associated with the current scope context.
+     * If no instance is found, a {@link TargetNotFoundException} is thrown.
+     * @param contextId the id for the scope context
+     *
+     * @return the wrapper for the target instance
+     * @throws TargetResolutionException if there was a problem instantiating the target instance
+     */
+     InstanceWrapper getAssociatedWrapper(KEY contextId)
+        throws TargetResolutionException;
+
+    /**
+     * Return a wrapper after use (for example, after invoking the instance).
+     * @param wrapper the wrapper for the target instance being returned
+     * @param contextId the id for the scope context
+     *
+     * @throws TargetDestructionException if there was a problem returning the target instance
+     */
+     void returnWrapper(InstanceWrapper wrapper, KEY contextId)
+        throws TargetDestructionException;
+
+     /**
+      * Removes an identified component implementation instance associated with the current 
+      * context from persistent storage
+      *
+      * @param contextId the identifier of the context to remove. 
+      */
+      void remove(KEY contextId) 
+          throws TargetDestructionException;     
+
+      /* A configuration error state */
+      int CONFIG_ERROR = -1;
+      /* Has not been initialized */
+      int UNINITIALIZED = 0;
+      /* In the process of being configured and initialized */
+      int INITIALIZING = 1;
+      /* Instantiated and configured */
+      int INITIALIZED = 2;
+      /* Configured and initialized */
+      int RUNNING = 4;
+      /* In the process of being shutdown */
+      int STOPPING = 5;
+      /* Has been shutdown and removed from the composite */
+      int STOPPED = 6;
+      /* In an error state */
+      int ERROR = 7;
+
+      /**
+       * Returns the lifecycle state
+       *
+       * @see #UNINITIALIZED
+       * @see #INITIALIZING
+       * @see #INITIALIZED
+       * @see #RUNNING
+       * @see #STOPPING
+       * @see #STOPPED
+       */
+      int getLifecycleState();
+
+      /**
+       * Starts the Lifecycle.
+       *
+       * @throws CoreRuntimeException
+       */
+      void start();
+
+      /**
+       * Stops the Lifecycle.
+       *
+       * @throws CoreRuntimeException
+       */
+      void stop();
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/ScopeContainerFactory.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/ScopeContainerFactory.java
new file mode 100644
index 0000000000..b19c14b3e0
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/ScopeContainerFactory.java
@@ -0,0 +1,32 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.core.scope;
+
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+
+/**
+ * Factory to create ScopeContainer for components
+ * 
+ * @version $Rev$ $Date$
+ */
+public interface ScopeContainerFactory {
+    ScopeContainer createScopeContainer(RuntimeComponent component);
+    Scope getScope();
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/ScopeRegistry.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/ScopeRegistry.java
new file mode 100644
index 0000000000..43a3288ff2
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/ScopeRegistry.java
@@ -0,0 +1,43 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.scope;
+
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+
+
+/**
+ * Manages {@link ScopeContainer}s in the runtime
+ *
+ * @version $$Rev$$ $$Date$$
+ */
+public interface ScopeRegistry {
+
+    /**
+     * Returns the scope container for the given scope or null if one not found
+     *
+     * @param scope the scope
+     * @return the scope container for the given scope or null if one not found
+     */
+    ScopeContainer getScopeContainer(RuntimeComponent component);
+
+    /**
+     * @param factory
+     */
+    void register(ScopeContainerFactory factory);
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/ScopeRegistryImpl.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/ScopeRegistryImpl.java
new file mode 100644
index 0000000000..75261e11a8
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/ScopeRegistryImpl.java
@@ -0,0 +1,62 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.scope;
+
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+import org.apache.tuscany.sca.provider.ImplementationProvider;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+
+/**
+ * The default implementation of a scope registry
+ * 
+ * @version $Rev$ $Date$
+ */
+public class ScopeRegistryImpl implements ScopeRegistry {
+    private final Map<Scope, ScopeContainerFactory> scopeCache = new ConcurrentHashMap<Scope, ScopeContainerFactory>();
+
+    public void register(ScopeContainerFactory factory) {
+        scopeCache.put(factory.getScope(), factory);
+    }
+
+    public ScopeContainer getScopeContainer(RuntimeComponent runtimeComponent) {
+        if (!(runtimeComponent instanceof ScopedRuntimeComponent)) {
+            return null;
+        }
+        ScopedRuntimeComponent component = (ScopedRuntimeComponent)runtimeComponent;
+        if (component.getScopeContainer() != null) {
+            return component.getScopeContainer();
+        }
+        ImplementationProvider implementationProvider = component.getImplementationProvider();
+        if (implementationProvider instanceof ScopedImplementationProvider) {
+            ScopedImplementationProvider provider = (ScopedImplementationProvider)implementationProvider;
+            Scope scope = provider.getScope();
+            if (scope == null) {
+                scope = Scope.STATELESS;
+            }
+            ScopeContainerFactory factory = scopeCache.get(scope);
+            ScopeContainer container = factory.createScopeContainer(component);
+            component.setScopeContainer(container);
+            return container;
+        }
+        return null;
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/ScopedImplementationProvider.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/ScopedImplementationProvider.java
new file mode 100644
index 0000000000..85a6626cdd
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/ScopedImplementationProvider.java
@@ -0,0 +1,65 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.core.scope;
+
+import org.apache.tuscany.sca.core.context.InstanceWrapper;
+import org.apache.tuscany.sca.provider.ImplementationProvider;
+
+/**
+ * A component implementation can implement this interface to provide scope
+ * management for the components
+ * 
+ * @version $Rev$ $Date$
+ */
+public interface ScopedImplementationProvider extends ImplementationProvider {
+    /**
+     * Get the scope for the component implementation
+     * 
+     * @return The scope for the component implementation, if null is returned,
+     *         STATELESS will be used
+     */
+    Scope getScope();
+
+    /**
+     * Indicate if the component needs to be eagerly initialized
+     * 
+     * @return true if the component is marked to be eagerly initialized, false
+     *         otherwise
+     */
+    boolean isEagerInit();
+    
+    /**
+     * @return the maxAge
+     */
+    long getMaxAge();
+
+    /**
+     * @return the maxIdleTime
+     */
+    long getMaxIdleTime();    
+
+    /**
+     * Create a wrapper for the component instance for the scope management
+     * 
+     * @return A wrapper for the component instance
+     */
+    InstanceWrapper createInstanceWrapper();
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/ScopedRuntimeComponent.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/ScopedRuntimeComponent.java
new file mode 100644
index 0000000000..c27b112f8a
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/ScopedRuntimeComponent.java
@@ -0,0 +1,40 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.core.scope;
+
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+
+/**
+ * Scoped runtime component
+ * 
+ * @version $Rev$ $Date$
+ */
+public interface ScopedRuntimeComponent extends RuntimeComponent {
+    /**
+     * Set the associated scope container
+     * @param scopeContainer
+     */
+    void setScopeContainer(ScopeContainer scopeContainer);
+    /**
+     * Get the assoicated scope container
+     * @return
+     */
+    ScopeContainer getScopeContainer();
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/StatelessScopeContainer.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/StatelessScopeContainer.java
new file mode 100644
index 0000000000..a2c0edb9b4
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/StatelessScopeContainer.java
@@ -0,0 +1,55 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.scope;
+
+import org.apache.tuscany.sca.core.context.InstanceWrapper;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+
+/**
+ * A scope context which manages stateless atomic component instances in a non-pooled fashion.
+ *
+ * @version $Rev$ $Date$
+ */
+public class StatelessScopeContainer<KEY> extends AbstractScopeContainer<KEY> {
+
+    public StatelessScopeContainer(RuntimeComponent component) {
+        super(Scope.STATELESS, component);
+    }
+
+    @Override
+    public  InstanceWrapper getWrapper(KEY contextId)
+        throws TargetResolutionException {
+        InstanceWrapper ctx = createInstanceWrapper();
+        ctx.start();
+        return ctx;
+    }
+
+    @Override
+    public  InstanceWrapper getAssociatedWrapper(KEY contextId)
+        throws TargetResolutionException {
+        return getWrapper(contextId);
+    }
+
+    @Override
+    public  void returnWrapper(InstanceWrapper wrapper, KEY contextId)
+        throws TargetDestructionException {
+        wrapper.stop();
+    }
+    
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/StatelessScopeContainerFactory.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/StatelessScopeContainerFactory.java
new file mode 100644
index 0000000000..0471b2c52e
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/StatelessScopeContainerFactory.java
@@ -0,0 +1,37 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.core.scope;
+
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+
+/**
+ * @version $Rev$ $Date$
+ */
+public class StatelessScopeContainerFactory implements ScopeContainerFactory {
+
+    public ScopeContainer createScopeContainer(RuntimeComponent component) {
+        return new StatelessScopeContainer(component);
+    }
+
+    public Scope getScope() {
+        return Scope.STATELESS;
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/TargetDestructionException.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/TargetDestructionException.java
new file mode 100644
index 0000000000..0f83dad97d
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/TargetDestructionException.java
@@ -0,0 +1,44 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.tuscany.sca.core.scope;
+
+/**
+ * Denotes an error destroying a target
+ *
+ * @version $Rev$ $Date$
+ */
+public class TargetDestructionException extends TargetResolutionException {
+    private static final long serialVersionUID = -6126684147851674709L;
+
+    public TargetDestructionException() {
+        super();
+    }
+
+    public TargetDestructionException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public TargetDestructionException(String message) {
+        super(message);
+    }
+
+    public TargetDestructionException(Throwable cause) {
+        super(cause);
+    }
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/TargetInitializationException.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/TargetInitializationException.java
new file mode 100644
index 0000000000..15959c0608
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/TargetInitializationException.java
@@ -0,0 +1,44 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.tuscany.sca.core.scope;
+
+/**
+ * Denotes an error initializing a target
+ *
+ * @version $Rev$ $Date$
+ */
+public class TargetInitializationException extends TargetResolutionException {
+    private static final long serialVersionUID = -6228778208649752698L;
+
+    public TargetInitializationException() {
+        super();
+    }
+
+    public TargetInitializationException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public TargetInitializationException(String message) {
+        super(message);
+    }
+
+    public TargetInitializationException(Throwable cause) {
+        super(cause);
+    }
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/TargetNotFoundException.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/TargetNotFoundException.java
new file mode 100644
index 0000000000..6e51a8c9ec
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/TargetNotFoundException.java
@@ -0,0 +1,44 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.scope;
+
+/**
+ * Thrown when a target of an operation cannot be found
+ *
+ * @version $$Rev$$ $$Date$$
+ */
+public class TargetNotFoundException extends TargetResolutionException {
+    private static final long serialVersionUID = 5541830480658471186L;
+
+    public TargetNotFoundException() {
+        super();
+    }
+
+    public TargetNotFoundException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public TargetNotFoundException(String message) {
+        super(message);
+    }
+
+    public TargetNotFoundException(Throwable cause) {
+        super(cause);
+    }
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/TargetResolutionException.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/TargetResolutionException.java
new file mode 100644
index 0000000000..ea8d0e876c
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/scope/TargetResolutionException.java
@@ -0,0 +1,44 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.tuscany.sca.core.scope;
+
+/**
+ * Denotes an error retrieving a target instance
+ *
+ * @version $Rev$ $Date$
+ */
+public class TargetResolutionException extends Exception {
+    private static final long serialVersionUID = 2912513650522019405L;
+
+    public TargetResolutionException() {
+        super();
+    }
+
+    public TargetResolutionException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public TargetResolutionException(String message) {
+        super(message);
+    }
+
+    public TargetResolutionException(Throwable cause) {
+        super(cause);
+    }
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/store/MemoryStore.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/store/MemoryStore.java
new file mode 100644
index 0000000000..5b838116c5
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/store/MemoryStore.java
@@ -0,0 +1,195 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.tuscany.sca.core.store;
+
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.TimeUnit;
+
+import org.apache.tuscany.sca.core.event.BaseEventPublisher;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+import org.apache.tuscany.sca.store.DuplicateRecordException;
+import org.apache.tuscany.sca.store.RecoveryListener;
+import org.apache.tuscany.sca.store.Store;
+import org.apache.tuscany.sca.store.StoreExpirationEvent;
+import org.apache.tuscany.sca.store.StoreMonitor;
+import org.apache.tuscany.sca.store.StoreWriteException;
+import org.osoa.sca.annotations.Destroy;
+import org.osoa.sca.annotations.EagerInit;
+import org.osoa.sca.annotations.Init;
+import org.osoa.sca.annotations.Property;
+import org.osoa.sca.annotations.Service;
+
+/**
+ * Implements a non-durable, non-transactional store using a simple in-memory map
+ *
+ * @version $Rev$ $Date$
+ */
+@Service(Store.class)
+@EagerInit
+public class MemoryStore extends BaseEventPublisher implements Store {
+    private Map<RuntimeComponent, Map<String, Record>> store;
+    // TODO integrate with a core threading scheme
+    private ScheduledExecutorService scheduler;
+    private long reaperInterval = 300000;
+    private StoreMonitor monitor;
+    private long defaultExpirationOffset = 600000; // 10 minutes
+
+    public MemoryStore(StoreMonitor monitor) {
+        this.monitor = monitor;
+        this.store = new ConcurrentHashMap<RuntimeComponent, Map<String, Record>>();
+        this.scheduler = Executors.newSingleThreadScheduledExecutor();
+    }
+
+    /**
+     * Returns the maximum default expiration offset for records in the store
+     *
+     * @return the maximum default expiration offset for records in the store
+     */
+    public long getDefaultExpirationOffset() {
+        return defaultExpirationOffset;
+    }
+
+    /**
+     * Sets the maximum default expiration offset for records in the store
+     */
+    @Property
+    public void setDefaultExpirationOffset(long defaultExpirationOffset) {
+        this.defaultExpirationOffset = defaultExpirationOffset;
+    }
+
+    /**
+     * Sets the interval for expired entry scanning to be performed
+     */
+    @Property
+    public void setReaperInterval(long reaperInterval) {
+        this.reaperInterval = reaperInterval;
+    }
+
+    public long getReaperInterval() {
+        return reaperInterval;
+    }
+
+    @Init
+    public void init() {
+        scheduler.scheduleWithFixedDelay(new Reaper(), reaperInterval, reaperInterval, TimeUnit.MILLISECONDS);
+        monitor.start("In-memory store started");
+    }
+
+    @Destroy
+    public void destroy() {
+        scheduler.shutdown();
+        monitor.stop("In-memory store stopped");
+    }
+
+    public void insertRecord(RuntimeComponent owner, String id, Object object, long expiration) throws StoreWriteException {
+        Map<String, Record> map = store.get(owner);
+        if (map == null) {
+            map = new ConcurrentHashMap<String, Record>();
+            store.put(owner, map);
+        }
+        if (map.containsKey(id)) {
+            throw new DuplicateRecordException("Duplicate record: " + owner.getURI() +" : " + id);
+        }
+        map.put(id, new Record(object, expiration));
+    }
+
+    public void updateRecord(RuntimeComponent owner, String id, Object object, long expiration) throws StoreWriteException {
+        Map<String, Record> map = store.get(owner);
+        if (map == null) {
+            throw new StoreWriteException("Record not found: " + owner.getURI() +" : " + id);
+        }
+        Record record = map.get(id);
+        if (record == null) {
+            throw new StoreWriteException("Record not found: " + owner.getURI() +" : " + id);
+        }
+        record.data = object;
+    }
+
+    public Object readRecord(RuntimeComponent owner, String id) {
+        Map<String, Record> map = store.get(owner);
+        if (map == null) {
+            return null;
+        }
+        Record record = map.get(id);
+        if (record != null) {
+            return record.data;
+        }
+        return null;
+    }
+
+    public void removeRecords() {
+        store.clear();
+    }
+
+    public void removeRecord(RuntimeComponent owner, String id) throws StoreWriteException {
+        Map<String, Record> map = store.get(owner);
+        if (map == null) {
+            throw new StoreWriteException("Owner not found: " + owner.getURI() +" : " + id);
+        }
+        if (map.remove(id) == null) {
+            throw new StoreWriteException("Owner not found: " + owner.getURI() +" : " + id);
+        }
+    }
+
+    public void recover(RecoveryListener listener) {
+        throw new UnsupportedOperationException();
+    }
+
+    private class Record {
+        private Object data;
+        private long expiration = NEVER;
+
+        public Record(Object data, long expiration) {
+            this.data = data;
+            this.expiration = expiration;
+        }
+
+        public Object getData() {
+            return data;
+        }
+
+        public long getExpiration() {
+            return expiration;
+        }
+    }
+
+    private class Reaper implements Runnable {
+
+        public void run() {
+            long now = System.currentTimeMillis();
+            for (Map.Entry<RuntimeComponent, Map<String, Record>> entries : store.entrySet()) {
+                for (Map.Entry<String, Record> entry : entries.getValue().entrySet()) {
+                    final long expiration = entry.getValue().expiration;
+                    if (expiration != NEVER && now >= expiration) {
+                        RuntimeComponent owner = entries.getKey();
+                        Object instance = entry.getValue().getData();
+                        // notify listeners of the expiration 
+                        StoreExpirationEvent event = new StoreExpirationEvent(this, owner, instance);
+                        publish(event);
+                        entries.getValue().remove(entry.getKey());
+                    }
+                }
+            }
+        }
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/work/Jsr237Work.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/work/Jsr237Work.java
new file mode 100644
index 0000000000..6fe883157f
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/work/Jsr237Work.java
@@ -0,0 +1,63 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.core.work;
+
+/*
+ * JCA work wrapper.
+ */
+public class Jsr237Work<T extends Runnable> implements commonj.work.Work {
+
+    // Work that is being executed.
+    private T work;
+
+    /*
+     * Initializes the work instance.
+     */
+    public Jsr237Work(T work) {
+        this.work = work;
+    }
+
+    /*
+     * Returns the completed work.
+     */
+    public T getWork() {
+        return work;
+    }
+
+    /*
+     * Release the work.
+     */
+    public void release() {
+    }
+
+    /*
+     * Work attributes are not daemon.
+     */
+    public boolean isDaemon() {
+        return false;
+    }
+
+    /*
+     * Runs the work.
+     */
+    public void run() {
+        work.run();
+    }
+}
\ No newline at end of file
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/work/Jsr237WorkScheduler.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/work/Jsr237WorkScheduler.java
new file mode 100644
index 0000000000..1abe040c14
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/work/Jsr237WorkScheduler.java
@@ -0,0 +1,165 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.work;
+
+import org.apache.tuscany.sca.work.NotificationListener;
+import org.apache.tuscany.sca.work.WorkScheduler;
+import org.apache.tuscany.sca.work.WorkSchedulerException;
+
+import commonj.work.WorkEvent;
+import commonj.work.WorkListener;
+
+/**
+ * A work scheduler implementation based on a JSR 237 work manager.
+ * <p/>
+ * <p/>
+ * This needs a JSR 237 work manager implementation available for scheduling work. Instances can be configured with a
+ * work manager implementation that is injected in. It is the responsibility of the runtime environment to make a work
+ * manager implementaion available. For example, if the managed environment supports work manager the runtime can use
+ * the appropriate lookup mechanism to inject the work manager implementation. </p>
+ */
+public class Jsr237WorkScheduler implements WorkScheduler {
+
+    /**
+     * Underlying JSR-237 work manager
+     */
+    private ThreadPoolWorkManager jsr237WorkManager;
+
+    /**
+     * Initializes the JSR 237 work manager.
+     *
+     * @param jsr237WorkManager JSR 237 work manager.
+     */
+    public Jsr237WorkScheduler() {
+        jsr237WorkManager = new ThreadPoolWorkManager(10);
+    }
+
+    /**
+     * Schedules a unit of work for future execution. The notification listener is used to register interest in
+     * callbacks regarding the status of the work.
+     *
+     * @param work The unit of work that needs to be asynchronously executed.
+     */
+    public <T extends Runnable> void scheduleWork(T work) {
+        scheduleWork(work, null);
+    }
+
+    /**
+     * Schedules a unit of work for future execution. The notification listener is used to register interest in
+     * callbacks regarding the status of the work.
+     *
+     * @param work     The unit of work that needs to be asynchronously executed.
+     * @param listener Notification listener for callbacks.
+     */
+    public <T extends Runnable> void scheduleWork(T work, NotificationListener<T> listener) {
+
+        if (work == null) {
+            throw new IllegalArgumentException("Work cannot be null");
+        }
+
+        Jsr237Work<T> jsr237Work = new Jsr237Work<T>(work);
+        try {
+            if (listener == null) {
+                jsr237WorkManager.schedule(jsr237Work);
+            } else {
+                Jsr237WorkListener<T> jsr237WorkListener = new Jsr237WorkListener<T>(listener, work);
+                jsr237WorkManager.schedule(jsr237Work, jsr237WorkListener);
+            }
+        } catch (IllegalArgumentException ex) {
+            if (listener != null) {
+                listener.workRejected(work);
+            } else {
+                throw new WorkSchedulerException(ex);
+            }
+        } catch (Exception ex) {
+            throw new WorkSchedulerException(ex);
+        }
+
+    }
+
+    public void destroy() {
+        jsr237WorkManager.destroy();
+    }
+
+    /*
+     * Worklistener for keeping track of work status callbacks.
+     *
+     */
+    private class Jsr237WorkListener<T extends Runnable> implements WorkListener {
+
+        // Notification listener
+        private NotificationListener<T> listener;
+
+        // Work
+        private T work;
+
+        /*
+        * Initializes the notification listener.
+        */
+        public Jsr237WorkListener(NotificationListener<T> listener, T work) {
+            this.listener = listener;
+            this.work = work;
+        }
+
+        /*
+         * Callback when the work is accepted.
+         */
+        public void workAccepted(WorkEvent workEvent) {
+            T work = getWork();
+            listener.workAccepted(work);
+        }
+
+        /*
+         * Callback when the work is rejected.
+         */
+        public void workRejected(WorkEvent workEvent) {
+            T work = getWork();
+            listener.workRejected(work);
+        }
+
+        /*
+         * Callback when the work is started.
+         */
+        public void workStarted(WorkEvent workEvent) {
+            T work = getWork();
+            listener.workStarted(work);
+        }
+
+        /*
+         * Callback when the work is completed.
+         */
+        public void workCompleted(WorkEvent workEvent) {
+            T work = getWork();
+            Exception exception = workEvent.getException();
+            if (exception != null) {
+                listener.workFailed(work, exception);
+            } else {
+                listener.workCompleted(work);
+            }
+        }
+
+        /*
+        * Gets the underlying work from the work event.
+        */
+        private T getWork() {
+            return work;
+        }
+
+    }
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/work/ThreadPoolWorkManager.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/work/ThreadPoolWorkManager.java
new file mode 100644
index 0000000000..60696692e1
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/work/ThreadPoolWorkManager.java
@@ -0,0 +1,219 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.work;
+
+import java.rmi.server.UID;
+import java.util.Collection;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.RejectedExecutionException;
+
+import org.osoa.sca.annotations.Destroy;
+import org.osoa.sca.annotations.Property;
+
+import commonj.work.Work;
+import commonj.work.WorkEvent;
+import commonj.work.WorkException;
+import commonj.work.WorkItem;
+import commonj.work.WorkListener;
+import commonj.work.WorkManager;
+
+/**
+ * A thread-pool based implementation for the JSR-237 work manager.
+ * <p/>
+ * <p/>
+ * This implementation supports only local work.
+ * <p/>
+ * TODO Elaborate the implementation. </p>
+ */
+public class ThreadPoolWorkManager implements WorkManager {
+
+    // Map of work items currently handled by the work manager
+    private Map<WorkItemImpl, WorkListener> workItems = new ConcurrentHashMap<WorkItemImpl, WorkListener>();
+
+    // Thread-pool
+    private ExecutorService executor;
+
+    /**
+     * Initializes the thread-pool.
+     *
+     * @param threadPoolSize Thread-pool size.
+     */
+    public ThreadPoolWorkManager(@Property(name = "poolSize") int threadPoolSize) {
+        executor = Executors.newFixedThreadPool(threadPoolSize);
+    }
+
+    /**
+     * Schedules a unit of work asynchronously.
+     *
+     * @param work Work that needs to be scheduled.
+     * @return Work Work item representing the asynchronous work
+     */
+    public WorkItem schedule(Work work) throws IllegalArgumentException {
+        return schedule(work, null);
+    }
+
+    /**
+     * Schedules a unit of work asynchronously.
+     *
+     * @param work         Work that needs to be scheduled.
+     * @param workListener Work listener for callbacks.
+     * @return Work Work item representing the asynchronous work
+     */
+    public WorkItem schedule(Work work, WorkListener workListener) throws IllegalArgumentException {
+
+        WorkItemImpl workItem = new WorkItemImpl(new UID().toString(), work);
+        if (workListener != null) {
+            workItems.put(workItem, workListener);
+        }
+        workAccepted(workItem, work);
+        if (scheduleWork(work, workItem)) {
+            return workItem;
+        } else {
+            workItem.setStatus(WorkEvent.WORK_REJECTED);
+            if (workListener != null) {
+                workListener.workRejected(new WorkEventImpl(workItem));
+            }
+            throw new IllegalArgumentException("Unable to schedule work");
+        }
+    }
+
+    /**
+     * Wait for all the specified units of work to finish.
+     *
+     * @param works   Units of the work that need to finish.
+     * @param timeout Timeout for waiting for the units of work to finish.
+     */
+    public boolean waitForAll(Collection works, long timeout) {
+        throw new UnsupportedOperationException("waitForAll not supported");
+    }
+
+    /**
+     * Wait for any of the specified units of work to finish.
+     *
+     * @param works   Units of the work that need to finish.
+     * @param timeout Timeout for waiting for the units of work to finish.
+     */
+    public Collection waitForAny(Collection works, long timeout) {
+        throw new UnsupportedOperationException("waitForAny not supported");
+    }
+
+    /**
+     * Method provided for subclasses to indicate a work accptance.
+     *
+     * @param workItem Work item representing the work that was accepted.
+     * @param work     Work that was accepted.
+     */
+    private void workAccepted(final WorkItemImpl workItem, final Work work) {
+        WorkListener listener = workItems.get(workItem);
+        if (listener != null) {
+            workItem.setStatus(WorkEvent.WORK_ACCEPTED);
+            WorkEvent event = new WorkEventImpl(workItem);
+            listener.workAccepted(event);
+        }
+    }
+
+    /*
+     * Method to indicate a work start.
+     */
+    private void workStarted(final WorkItemImpl workItem, final Work work) {
+        WorkListener listener = workItems.get(workItem);
+        if (listener != null) {
+            workItem.setStatus(WorkEvent.WORK_STARTED);
+            WorkEvent event = new WorkEventImpl(workItem);
+            listener.workStarted(event);
+        }
+    }
+
+    /*
+     * Method to indicate a work completion.
+     */
+    private void workCompleted(final WorkItemImpl workItem, final Work work) {
+        workCompleted(workItem, work, null);
+    }
+
+    /*
+     * Method to indicate a work completion.
+     */
+    private void workCompleted(final WorkItemImpl workItem, final Work work, final WorkException exception) {
+        WorkListener listener = workItems.get(workItem);
+        if (listener != null) {
+            workItem.setStatus(WorkEvent.WORK_COMPLETED);
+            workItem.setResult(work);
+            workItem.setException(exception);
+            WorkEvent event = new WorkEventImpl(workItem);
+            listener.workCompleted(event);
+            workItems.remove(workItem);
+        }
+    }
+
+    /*
+     * Schedules the work using the threadpool.
+     */
+    private boolean scheduleWork(final Work work, final WorkItemImpl workItem) {
+        try {
+            executor.execute(new DecoratingWork(workItem, work));
+            return true;
+        } catch (RejectedExecutionException ex) {
+            return false;
+        }
+    }
+
+    /*
+     * Class that decorates the original worker so that it can get callbacks when work is done.
+     */
+    private final class DecoratingWork implements Runnable {
+
+        // Work item for this work.
+        private WorkItemImpl workItem;
+
+        // The original work.
+        private Work decoratedWork;
+
+        /*
+         * Initializes the work item and underlying work.
+         */
+        private DecoratingWork(final WorkItemImpl workItem, final Work decoratedWork) {
+            this.workItem = workItem;
+            this.decoratedWork = decoratedWork;
+        }
+
+        /*
+         * Overrides the run method.
+         */
+        public void run() {
+            workStarted(workItem, decoratedWork);
+            try {
+                decoratedWork.run();
+                workCompleted(workItem, decoratedWork);
+            } catch (Throwable th) {
+                workCompleted(workItem, decoratedWork, new WorkException(th.getMessage(), th));
+            }
+        }
+
+    }
+
+    @Destroy
+    public void destroy() {
+        executor.shutdown();
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/work/WorkEventImpl.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/work/WorkEventImpl.java
new file mode 100644
index 0000000000..62ebeea1fb
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/work/WorkEventImpl.java
@@ -0,0 +1,74 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.work;
+
+
+import commonj.work.WorkEvent;
+import commonj.work.WorkException;
+import commonj.work.WorkItem;
+
+/**
+ * Default immutable implementation of the <code>WorkEvent</code> class.
+ */
+class WorkEventImpl implements WorkEvent {
+    
+    // Work item for this event
+    private WorkItem workItem;
+
+    // Exception if something has gone wrong
+    private WorkException exception;
+
+    /**
+     * Instantiates the event.
+     *
+     * @param workItem Work item for this event.
+     */
+    public WorkEventImpl(final WorkItemImpl workItem) {
+        this.workItem = workItem;
+        this.exception = workItem.getException();
+    }
+
+    /**
+     * Returns the work type based on whether the work was accepted, started,
+     * rejected or completed.
+     *
+     * @return Work type.
+     */
+    public int getType() {
+        return workItem.getStatus();
+    }
+
+    /**
+     * Returns the work item associated with this work type.
+     *
+     * @return Work item.
+     */
+    public WorkItem getWorkItem() {
+        return workItem;
+    }
+
+    /**
+     * Returns the exception if the work completed with an exception.
+     *
+     * @return Work exception.
+     */
+    public WorkException getException() {
+        return exception;
+    }
+}
diff --git a/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/work/WorkItemImpl.java b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/work/WorkItemImpl.java
new file mode 100644
index 0000000000..39a7c647f7
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/main/java/org/apache/tuscany/sca/core/work/WorkItemImpl.java
@@ -0,0 +1,168 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.work;
+
+import commonj.work.Work;
+import commonj.work.WorkException;
+import commonj.work.WorkItem;
+
+/**
+ * An identity based immutable implementation of the <code>WorkItem</code>
+ * interface.
+ *
+ */
+class WorkItemImpl implements WorkItem {
+    
+    // Id scoped for the VM
+    private String id;
+
+    // Status
+    private int status = -1;
+
+    // Result
+    private Work result;
+    
+    // Original work
+    private Work originalWork;
+
+    // Exception
+    private WorkException exception;
+
+    /**
+     * Instantiates an id for this item.
+     *
+     * @param id of this work event.
+     */
+    protected WorkItemImpl(final String id, final Work orginalWork) {
+        this.id = id;
+        this.originalWork = orginalWork;
+    }
+
+    /**
+     * Returns the id.
+     *
+     * @return Id of this item.
+     */
+    public String getId() {
+        return id;
+    }
+
+    /**
+     * Returns the original work.
+     *
+     * @return Original work.
+     */
+    public Work getOriginalWork() {
+        return originalWork;
+    }
+
+    /**
+     * Returns the work result if the work completed.
+     *
+     * @return Work.
+     * @throws WorkException If the work completed with an exception.
+     */
+    public Work getResult() {
+        return result;
+    }
+
+    /**
+     * Sets the result.
+     *
+     * @param result Result.
+     */
+    protected void setResult(final Work result) {
+        this.result = result;
+    }
+
+    /**
+     * Returns the exception if work completed with an exception.
+     *
+     * @return Work exception.
+     */
+    protected WorkException getException() {
+        return exception;
+    }
+
+    /**
+     * Sets the exception.
+     *
+     * @param exception Exception.
+     */
+    protected void setException(final WorkException exception) {
+        this.exception = exception;
+    }
+
+    /**
+     * Returns the work type based on whether the work was accepted, started,
+     * rejected or completed.
+     *
+     * @return Work status.
+     */
+    public int getStatus() {
+        return status;
+    }
+
+    /**
+     * Sets the status.
+     *
+     * @param status Status.
+     */
+    protected void setStatus(final int status) {
+        this.status = status;
+    }
+
+    /**
+     * @see Object#hashCode() 
+     */
+    @Override
+    public int hashCode() {
+        return id.hashCode();
+    }
+
+    /**
+     * Indicates whether some other object is "equal to" this one.
+     *
+     * @param obj Object to be compared.
+     * @return true if this object is the same as the obj argument; false
+     *         otherwise..
+     */
+    @Override
+    public boolean equals(final Object obj) {
+        return (obj != null) && (obj.getClass() == WorkItemImpl.class) && ((WorkItemImpl) obj).id.equals(id);
+    }
+
+    /**
+     * Compares this object with the specified object for order. Returns a
+     * negative integer, zero, or a positive integer as this object is less
+     * than, equal to, or greater than the specified object.
+     *
+     * @param o Object to be compared.
+     * @return A negative integer, zero, or a positive integer as this object
+     *         is less than, equal to, or greater than the specified object.
+     * @throws ClassCastException needs better documentation.
+     */
+    public int compareTo(final Object o) {
+        if (o.getClass() != WorkItemImpl.class) {
+            throw new ClassCastException(o.getClass().getName());
+        } else {
+            return ((WorkItemImpl) o).getId().compareTo(getId());
+        }
+    }
+}
diff --git a/branches/sca-java-0.99/modules/core/src/test/java/org/apache/tuscany/sca/core/DefaultExtensionPointRegistryTestCase.java b/branches/sca-java-0.99/modules/core/src/test/java/org/apache/tuscany/sca/core/DefaultExtensionPointRegistryTestCase.java
new file mode 100644
index 0000000000..7b44736d4b
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/test/java/org/apache/tuscany/sca/core/DefaultExtensionPointRegistryTestCase.java
@@ -0,0 +1,52 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.core;
+
+import junit.framework.TestCase;
+
+public class DefaultExtensionPointRegistryTestCase extends TestCase {
+    private ExtensionPointRegistry registry;
+
+    @Override
+    protected void setUp() throws Exception {
+        super.setUp();
+        registry = new DefaultExtensionPointRegistry();
+    }
+
+    public void testRegistry() {
+        MyRegistry service = new MyREgistryImpl();
+        registry.addExtensionPoint(service);
+        assertSame(service, registry.getExtensionPoint(MyRegistry.class));
+        registry.removeExtensionPoint(service);
+        assertNull(registry.getExtensionPoint(MyRegistry.class));
+    }
+
+    public static interface MyRegistry {
+        void doSomething();
+    }
+
+    private static class MyREgistryImpl implements MyRegistry {
+
+        public void doSomething() {
+        }
+
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/test/java/org/apache/tuscany/sca/core/event/BaseEventPublisherTestCase.java b/branches/sca-java-0.99/modules/core/src/test/java/org/apache/tuscany/sca/core/event/BaseEventPublisherTestCase.java
new file mode 100644
index 0000000000..2bc78c3d35
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/test/java/org/apache/tuscany/sca/core/event/BaseEventPublisherTestCase.java
@@ -0,0 +1,98 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.tuscany.sca.core.event;
+
+
+import junit.framework.TestCase;
+
+import org.apache.tuscany.sca.event.Event;
+import org.apache.tuscany.sca.event.EventFilter;
+import org.apache.tuscany.sca.event.EventPublisher;
+import org.apache.tuscany.sca.event.RuntimeEventListener;
+import org.apache.tuscany.sca.event.TrueFilter;
+import org.easymock.EasyMock;
+
+/**
+ * @version $Rev$ $Date$
+ */
+public class BaseEventPublisherTestCase extends TestCase {
+    EventPublisher publisher;
+
+    public void testFireListener() {
+        Event event = new TestEvent();
+        RuntimeEventListener listener = EasyMock.createMock(RuntimeEventListener.class);
+        listener.onEvent(EasyMock.same(event));
+        EasyMock.expectLastCall();
+        EasyMock.replay(listener);
+        publisher.addListener(listener);
+        publisher.publish(event);
+        EasyMock.verify(listener);
+    }
+
+    public void testRemoveListener() {
+        Event event = new TestEvent();
+        RuntimeEventListener listener = EasyMock.createMock(RuntimeEventListener.class);
+        EasyMock.replay(listener);
+        publisher.addListener(listener);
+        publisher.removeListener(listener);
+        publisher.publish(event);
+        EasyMock.verify(listener);
+    }
+
+    public void testFalseFilterListener() {
+        Event event = new TestEvent();
+        RuntimeEventListener listener = EasyMock.createMock(RuntimeEventListener.class);
+        EasyMock.replay(listener);
+        publisher.addListener(new FalseFilter(), listener);
+        publisher.publish(event);
+        EasyMock.verify(listener);
+    }
+
+    public void testTrueFilterListener() {
+        Event event = new TestEvent();
+        RuntimeEventListener listener = EasyMock.createMock(RuntimeEventListener.class);
+        listener.onEvent(EasyMock.same(event));
+        EasyMock.expectLastCall();
+        EasyMock.replay(listener);
+        publisher.addListener(new TrueFilter(), listener);
+        publisher.publish(event);
+        EasyMock.verify(listener);
+    }
+
+    @Override
+    protected void setUp() throws Exception {
+        publisher = new BaseEventPublisher() {
+        };
+    }
+
+    private class TestEvent implements Event {
+        public Object getSource() {
+            return null;
+        }
+    }
+
+    private class FalseFilter implements EventFilter {
+
+        public boolean match(Event event) {
+            return false;
+        }
+    }
+
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/test/java/org/apache/tuscany/sca/core/event/EventTestCase.java b/branches/sca-java-0.99/modules/core/src/test/java/org/apache/tuscany/sca/core/event/EventTestCase.java
new file mode 100644
index 0000000000..48dcf8df07
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/test/java/org/apache/tuscany/sca/core/event/EventTestCase.java
@@ -0,0 +1,69 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.event;
+
+import java.net.URI;
+
+import junit.framework.TestCase;
+
+/**
+ * @version $Rev$ $Date$
+ */
+public class EventTestCase extends TestCase {
+    private URI uri = URI.create("foo");
+
+    public void testCompositeStart() {
+        ComponentStart event = new ComponentStart(this, uri);
+        assertEquals(uri, event.getComponentURI());
+    }
+
+    public void testCompositeStop() {
+        ComponentStop event = new ComponentStop(this, uri);
+        assertEquals(uri, event.getComponentURI());
+    }
+
+    public void testHttpSessionStart() {
+        Object id = new Object();
+        HttpSessionStart event = new HttpSessionStart(this, id);
+        assertEquals(this, event.getSource());
+        assertEquals(id, event.getSessionID());
+    }
+
+    public void testHttpSessionEnd() {
+        Object id = new Object();
+        HttpSessionEnd event = new HttpSessionEnd(this, id);
+        assertEquals(this, event.getSource());
+        assertEquals(id, event.getSessionID());
+    }
+
+    public void testRequestStart() {
+        RequestStart event = new RequestStart(this);
+        assertEquals(this, event.getSource());
+    }
+
+    public void testReequestEnd() {
+        RequestEnd event = new RequestEnd(this);
+        assertEquals(this, event.getSource());
+    }
+
+
+    @Override
+    protected void setUp() throws Exception {
+    }
+}
diff --git a/branches/sca-java-0.99/modules/core/src/test/java/org/apache/tuscany/sca/core/scope/AbstractScopeContainerTestCase.java b/branches/sca-java-0.99/modules/core/src/test/java/org/apache/tuscany/sca/core/scope/AbstractScopeContainerTestCase.java
new file mode 100644
index 0000000000..64114f7fb2
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/test/java/org/apache/tuscany/sca/core/scope/AbstractScopeContainerTestCase.java
@@ -0,0 +1,69 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.scope;
+
+import java.net.URI;
+
+import junit.framework.TestCase;
+
+import org.apache.tuscany.sca.assembly.Implementation;
+import org.apache.tuscany.sca.core.context.InstanceWrapper;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+import org.easymock.EasyMock;
+import org.easymock.IMocksControl;
+
+/**
+ * @version $Rev$ $Date$
+ */
+public abstract class AbstractScopeContainerTestCase<T, KEY> extends TestCase {
+    protected IMocksControl control;
+    protected ScopeContainer<KEY> scopeContainer;
+    protected URI groupId;
+    protected KEY contextId;
+    protected RuntimeComponent component;
+    protected ScopedImplementation implementation; 
+    protected InstanceWrapper<T> wrapper;
+
+    @SuppressWarnings("unchecked")
+    @Override
+    protected void setUp() throws Exception {
+        super.setUp();
+        control = EasyMock.createStrictControl();
+        component = control.createMock(RuntimeComponent.class);
+        wrapper = control.createMock(InstanceWrapper.class);
+        implementation = control.createMock(ScopedImplementation.class);
+        EasyMock.expect(component.getImplementation()).andReturn(implementation).anyTimes();
+    }
+
+    protected void preRegisterComponent() throws Exception {
+        scopeContainer.start();
+        EasyMock.expect(implementation.isEagerInit()).andStubReturn(false);
+    }
+
+    protected void expectCreateWrapper() throws Exception {
+        EasyMock.expect(implementation.createInstanceWrapper()).andReturn(wrapper);
+        wrapper.start();
+    }
+    
+    protected static interface ScopedImplementation extends ScopedImplementationProvider, Implementation {
+        
+    }
+    
+    
+}
diff --git a/branches/sca-java-0.99/modules/core/src/test/java/org/apache/tuscany/sca/core/store/MemoryStoreTestCase.java b/branches/sca-java-0.99/modules/core/src/test/java/org/apache/tuscany/sca/core/store/MemoryStoreTestCase.java
new file mode 100644
index 0000000000..d46d77b4b8
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/test/java/org/apache/tuscany/sca/core/store/MemoryStoreTestCase.java
@@ -0,0 +1,165 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.tuscany.sca.core.store;
+
+import java.util.UUID;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
+
+import junit.framework.TestCase;
+
+import org.apache.tuscany.sca.event.RuntimeEventListener;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+import org.apache.tuscany.sca.store.DuplicateRecordException;
+import org.apache.tuscany.sca.store.Store;
+import org.apache.tuscany.sca.store.StoreExpirationEvent;
+import org.apache.tuscany.sca.store.StoreMonitor;
+import org.easymock.EasyMock;
+import org.easymock.IAnswer;
+
+/**
+ * @version $Rev$ $Date$
+ */
+public class MemoryStoreTestCase extends TestCase {
+    private StoreMonitor monitor;
+
+    public void testEviction() throws Exception {
+        MemoryStore store = new MemoryStore(monitor);
+        store.setReaperInterval(10);
+        store.init();
+        RuntimeComponent component = EasyMock.createNiceMock(RuntimeComponent.class);
+        EasyMock.replay(component);
+        String id = UUID.randomUUID().toString();
+        Object value = new Object();
+        store.insertRecord(component, id, value, 1);
+        Thread.sleep(200);
+        assertNull(store.readRecord(component, id));
+        store.destroy();
+    }
+
+    public void testNotifyOnEviction() throws Exception {
+        final CountDownLatch latch = new CountDownLatch(1);
+        RuntimeEventListener listener = EasyMock.createMock(RuntimeEventListener.class);
+        listener.onEvent(EasyMock.isA(StoreExpirationEvent.class));
+        EasyMock.expectLastCall().andStubAnswer(new IAnswer<Object>() {
+            public Object answer() throws Throwable {
+                latch.countDown();
+                return null;
+            }
+        });
+        EasyMock.replay(listener);
+        MemoryStore store = new MemoryStore(monitor);
+        store.addListener(listener);
+        store.setReaperInterval(10);
+        store.init();
+        RuntimeComponent component = EasyMock.createNiceMock(RuntimeComponent.class);
+        EasyMock.replay(component);
+        String id = UUID.randomUUID().toString();
+        Object value = new Object();
+        store.insertRecord(component, id, value, 1);
+        if (!latch.await(1000, TimeUnit.MILLISECONDS)) {
+            // failed to notify listener
+            fail();
+        }
+        EasyMock.verify(listener);
+    }
+
+    public void testNoEviction() throws Exception {
+        MemoryStore store = new MemoryStore(monitor);
+        store.setReaperInterval(10);
+        store.init();
+        RuntimeComponent component = EasyMock.createNiceMock(RuntimeComponent.class);
+        EasyMock.replay(component);
+        String id = UUID.randomUUID().toString();
+        Object value = new Object();
+        store.insertRecord(component, id, value, Store.NEVER);
+        Thread.sleep(100);
+        assertNotNull(store.readRecord(component, id));
+        store.destroy();
+    }
+
+    public void testInsertRecord() throws Exception {
+        MemoryStore store = new MemoryStore(monitor);
+        store.setReaperInterval(10);
+        store.init();
+        RuntimeComponent component = EasyMock.createNiceMock(RuntimeComponent.class);
+        EasyMock.replay(component);
+        String id = UUID.randomUUID().toString();
+        Object value = new Object();
+        store.insertRecord(component, id, value, Store.NEVER);
+        store.destroy();
+    }
+
+    public void testInsertAlreadyExists() throws Exception {
+        MemoryStore store = new MemoryStore(monitor);
+        store.setReaperInterval(10);
+        store.init();
+        RuntimeComponent component = EasyMock.createMock(RuntimeComponent.class);
+        EasyMock.expect(component.getURI()).andReturn("component");
+        EasyMock.replay(component);
+        String id = UUID.randomUUID().toString();
+        Object value = new Object();
+        store.insertRecord(component, id, value, Store.NEVER);
+        try {
+            store.insertRecord(component, id, value, Store.NEVER);
+            fail();
+        } catch (DuplicateRecordException e) {
+            //expected
+        }
+        store.destroy();
+    }
+
+    public void testUpdateRecord() throws Exception {
+        MemoryStore store = new MemoryStore(monitor);
+        store.setReaperInterval(10);
+        store.init();
+        RuntimeComponent component = EasyMock.createNiceMock(RuntimeComponent.class);
+        EasyMock.replay(component);
+        String id = UUID.randomUUID().toString();
+        Object value = new Object();
+        Object newValue = new Object();
+
+        store.insertRecord(component, id, value, Store.NEVER);
+        store.updateRecord(component, id, newValue, 1L);
+        assertEquals(newValue, store.readRecord(component, id));
+        store.destroy();
+    }
+
+    public void testDeleteRecord() throws Exception {
+        MemoryStore store = new MemoryStore(monitor);
+        store.setReaperInterval(10);
+        store.init();
+        RuntimeComponent component = EasyMock.createNiceMock(RuntimeComponent.class);
+        EasyMock.replay(component);
+        String id = UUID.randomUUID().toString();
+        Object value = new Object();
+
+        store.insertRecord(component, id, value, Store.NEVER);
+        store.removeRecord(component, id);
+        assertNull(store.readRecord(component, id));
+        store.destroy();
+    }
+
+    @Override
+    protected void setUp() throws Exception {
+        monitor = EasyMock.createNiceMock(StoreMonitor.class);
+        EasyMock.replay(monitor);
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/test/java/org/apache/tuscany/sca/core/wire/CallbackInterfaceInterceptorTestCase.java b/branches/sca-java-0.99/modules/core/src/test/java/org/apache/tuscany/sca/core/wire/CallbackInterfaceInterceptorTestCase.java
new file mode 100644
index 0000000000..58503fd852
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/test/java/org/apache/tuscany/sca/core/wire/CallbackInterfaceInterceptorTestCase.java
@@ -0,0 +1,55 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.tuscany.sca.core.wire;
+
+import junit.framework.TestCase;
+
+import org.apache.tuscany.sca.core.invocation.CallbackInterfaceInterceptor;
+import org.apache.tuscany.sca.core.invocation.MessageFactoryImpl;
+import org.apache.tuscany.sca.invocation.Interceptor;
+import org.apache.tuscany.sca.invocation.Message;
+import org.easymock.EasyMock;
+import org.osoa.sca.NoRegisteredCallbackException;
+
+/**
+ * @version $Rev$ $Date$
+ */
+public class CallbackInterfaceInterceptorTestCase extends TestCase {
+
+    public void testImplements() {
+        CallbackInterfaceInterceptor interceptor = new CallbackInterfaceInterceptor(true);
+        Interceptor next = EasyMock.createMock(Interceptor.class);
+        EasyMock.expect(next.invoke(EasyMock.isA(Message.class))).andReturn(null);
+        EasyMock.replay(next);
+        interceptor.setNext(next);
+        interceptor.invoke(new MessageFactoryImpl().createMessage());
+        EasyMock.verify(next);
+    }
+
+    public void testDoesNotImplement() {
+        CallbackInterfaceInterceptor interceptor = new CallbackInterfaceInterceptor(false);
+        try {
+            interceptor.invoke(new MessageFactoryImpl().createMessage());
+            fail();
+        } catch (NoRegisteredCallbackException e) {
+            // expected
+        }
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/test/java/org/apache/tuscany/sca/core/wire/InvocationChainImplTestCase.java b/branches/sca-java-0.99/modules/core/src/test/java/org/apache/tuscany/sca/core/wire/InvocationChainImplTestCase.java
new file mode 100644
index 0000000000..83f7bdd887
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/test/java/org/apache/tuscany/sca/core/wire/InvocationChainImplTestCase.java
@@ -0,0 +1,66 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.tuscany.sca.core.wire;
+
+import junit.framework.TestCase;
+
+import org.apache.tuscany.sca.core.invocation.InvocationChainImpl;
+import org.apache.tuscany.sca.interfacedef.impl.OperationImpl;
+import org.apache.tuscany.sca.invocation.Interceptor;
+import org.apache.tuscany.sca.invocation.InvocationChain;
+import org.apache.tuscany.sca.invocation.Invoker;
+import org.apache.tuscany.sca.invocation.Message;
+
+/**
+ * @version $Rev$ $Date$
+ */
+public class InvocationChainImplTestCase extends TestCase {
+
+    public void testInsertAtEnd() throws Exception {
+        InvocationChain chain = new InvocationChainImpl(new OperationImpl("foo"));
+        Interceptor inter2 = new MockInterceptor();
+        Interceptor inter1 = new MockInterceptor();
+        chain.addInterceptor(inter1);
+        chain.addInterceptor(inter2);
+        Interceptor head = (Interceptor)chain.getHeadInvoker();
+        assertEquals(inter1, head);
+        assertEquals(inter2, head.getNext());
+        assertEquals(inter2, chain.getTailInvoker());
+
+    }
+
+    private class MockInterceptor implements Interceptor {
+
+        private Invoker next;
+
+        public Message invoke(Message msg) {
+            return null;
+        }
+
+        public void setNext(Invoker next) {
+            this.next = next;
+        }
+
+        public Invoker getNext() {
+            return next;
+        }
+
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/test/java/org/apache/tuscany/sca/core/wire/NonBlockingInterceptorTestCase.java b/branches/sca-java-0.99/modules/core/src/test/java/org/apache/tuscany/sca/core/wire/NonBlockingInterceptorTestCase.java
new file mode 100644
index 0000000000..c5f93edeb6
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/test/java/org/apache/tuscany/sca/core/wire/NonBlockingInterceptorTestCase.java
@@ -0,0 +1,72 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.tuscany.sca.core.wire;
+
+import static org.easymock.EasyMock.createMock;
+import static org.easymock.EasyMock.expectLastCall;
+import static org.easymock.EasyMock.getCurrentArguments;
+import static org.easymock.EasyMock.isA;
+import static org.easymock.EasyMock.replay;
+import static org.easymock.EasyMock.verify;
+import junit.framework.TestCase;
+
+import org.apache.tuscany.sca.core.invocation.NonBlockingInterceptor;
+import org.apache.tuscany.sca.core.invocation.ThreadMessageContext;
+import org.apache.tuscany.sca.invocation.Interceptor;
+import org.apache.tuscany.sca.invocation.Message;
+import org.apache.tuscany.sca.work.WorkScheduler;
+import org.easymock.EasyMock;
+import org.easymock.IAnswer;
+
+/**
+ * @version $Rev$ $Date$
+ */
+public class NonBlockingInterceptorTestCase extends TestCase {
+
+    public void testInvoke() throws Exception {
+        WorkScheduler scheduler = createMock(WorkScheduler.class);
+        scheduler.scheduleWork(isA(Runnable.class));
+        expectLastCall().andStubAnswer(new IAnswer<Object>() {
+            public Object answer() throws Throwable {
+                Runnable runnable = (Runnable) getCurrentArguments()[0];
+                runnable.run();
+                return null;
+            }
+        });
+        replay(scheduler);
+        Message context = createMock(Message.class);
+        String convID = "convID";
+        EasyMock.expect(context.getConversationID()).andReturn(convID);
+        EasyMock.replay(context);
+        ThreadMessageContext.setMessageContext(context);
+        Message msg = createMock(Message.class);
+        msg.setCorrelationID(null);
+        msg.setConversationID(convID);
+        Interceptor next = EasyMock.createMock(Interceptor.class);
+        EasyMock.expect(next.invoke(EasyMock.eq(msg))).andReturn(msg);
+        EasyMock.replay(next);
+        EasyMock.replay(msg);
+        Interceptor interceptor = new NonBlockingInterceptor(scheduler, next);
+        interceptor.invoke(msg);
+        verify(context);
+        verify(next);
+        verify(msg);
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/core/src/test/java/org/apache/tuscany/sca/scope/ScopeTestCase.java b/branches/sca-java-0.99/modules/core/src/test/java/org/apache/tuscany/sca/scope/ScopeTestCase.java
new file mode 100644
index 0000000000..341d889b7d
--- /dev/null
+++ b/branches/sca-java-0.99/modules/core/src/test/java/org/apache/tuscany/sca/scope/ScopeTestCase.java
@@ -0,0 +1,61 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.tuscany.sca.scope;
+
+import junit.framework.TestCase;
+
+import org.apache.tuscany.sca.core.scope.Scope;
+
+/**
+ * @version $Rev$ $Date$
+ */
+public class ScopeTestCase extends TestCase {
+
+    public void testEquals() throws Exception {
+        Scope scope = new Scope("COMPOSITE");
+        assertTrue(scope.equals(Scope.COMPOSITE));
+    }
+
+    public void testEqualsNew() throws Exception {
+        Scope foo = new Scope("foo");
+        Scope foo2 = new Scope("FOO");
+        assertTrue(foo.equals(foo2));
+    }
+
+    public void testNotEquals() throws Exception {
+        Scope foo = new Scope("BAR");
+        Scope foo2 = new Scope("FOO");
+        assertFalse(foo.equals(foo2));
+    }
+
+    public void testNotEqualsDifferent() throws Exception {
+        Scope foo = new Scope("FOO");
+        assertFalse(foo.equals(new Bar("FOO")));
+    }
+
+    public class Bar {
+        String scope;
+
+        public Bar(String scope) {
+            this.scope = scope;
+        }
+    }
+
+
+}