Further cleanup for ComponentContext, CompositeContext

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@723904 13f79535-47bb-0310-9956-ffa450edef68

9 files changed, 545 insertions, 386 deletions

diff --git a/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/CompositeActivator.java b/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/CompositeActivator.java
index 24be299581..56b7442f51 100644
--- a/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/CompositeActivator.java
+++ b/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/CompositeActivator.java
@@ -113,20 +113,6 @@ public interface CompositeActivator {
     CompositeContext getCompositeContext();
 
     /**
-     * Get the proxy factory
-     * @return
-     */
-    ProxyFactory getProxyFactory();
-
-    /**
-     * Get the java interface factory
-     * @return
-     */
-    JavaInterfaceFactory getJavaInterfaceFactory();
-    
-    ConversationManager getConversationManager();
-
-    /**
      * Configure the runtime component with component context
      * @param component
      */
diff --git a/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/impl/CompositeActivatorImpl.java b/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/impl/CompositeActivatorImpl.java
index 5d8fdecc2f..67edf3ab9d 100644
--- a/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/impl/CompositeActivatorImpl.java
+++ b/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/impl/CompositeActivatorImpl.java
@@ -37,21 +37,20 @@ import org.apache.tuscany.sca.assembly.Implementation;
 import org.apache.tuscany.sca.assembly.OptimizableBinding;
 import org.apache.tuscany.sca.assembly.Reference;
 import org.apache.tuscany.sca.assembly.Service;
+import org.apache.tuscany.sca.context.ComponentContextFactory;
 import org.apache.tuscany.sca.context.ContextFactoryExtensionPoint;
+import org.apache.tuscany.sca.context.PropertyValueFactory;
 import org.apache.tuscany.sca.context.RequestContextFactory;
-import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessorExtensionPoint;
 import org.apache.tuscany.sca.core.ExtensionPointRegistry;
 import org.apache.tuscany.sca.core.FactoryExtensionPoint;
 import org.apache.tuscany.sca.core.UtilityExtensionPoint;
 import org.apache.tuscany.sca.core.assembly.ActivationException;
 import org.apache.tuscany.sca.core.assembly.CompositeActivator;
 import org.apache.tuscany.sca.core.context.CompositeContext;
-import org.apache.tuscany.sca.core.context.impl.ComponentContextImpl;
+import org.apache.tuscany.sca.core.context.impl.CompositeContextImpl;
 import org.apache.tuscany.sca.core.conversation.ConversationManager;
-import org.apache.tuscany.sca.core.invocation.ExtensibleProxyFactory;
 import org.apache.tuscany.sca.core.invocation.ExtensibleWireProcessor;
 import org.apache.tuscany.sca.core.invocation.ProxyFactory;
-import org.apache.tuscany.sca.core.invocation.ProxyFactoryExtensionPoint;
 import org.apache.tuscany.sca.core.scope.Scope;
 import org.apache.tuscany.sca.core.scope.ScopeContainer;
 import org.apache.tuscany.sca.core.scope.ScopeRegistry;
@@ -97,16 +96,20 @@ public class CompositeActivatorImpl implements CompositeActivator {
     private final ProviderFactoryExtensionPoint providerFactories;
     private final EndpointResolverFactoryExtensionPoint endpointResolverFactories;
 
+    private final ComponentContextFactory componentContextFactory;
     private final RequestContextFactory requestContextFactory;
     private final ProxyFactory proxyFactory;
     private final JavaInterfaceFactory javaInterfaceFactory;
+    private final PropertyValueFactory propertyValueFactory;
+
     private final ConversationManager conversationManager;
 
-    private final CompositeContext componentContextHelper;
+    private final CompositeContext compositeContext;
 
     private Composite domainComposite;
     
     public CompositeActivatorImpl(ExtensionPointRegistry extensionPoints) {
+        this.compositeContext = new CompositeContextImpl(extensionPoints);
         FactoryExtensionPoint factories = extensionPoints.getExtensionPoint(FactoryExtensionPoint.class);
         this.assemblyFactory = factories.getFactory(AssemblyFactory.class);
         this.messageFactory = factories.getFactory(MessageFactory.class);
@@ -117,14 +120,13 @@ public class CompositeActivatorImpl implements CompositeActivator {
         this.wireProcessor = new ExtensibleWireProcessor(extensionPoints.getExtensionPoint(RuntimeWireProcessorExtensionPoint.class));
         this.providerFactories = extensionPoints.getExtensionPoint(ProviderFactoryExtensionPoint.class);
         this.endpointResolverFactories = extensionPoints.getExtensionPoint(EndpointResolverFactoryExtensionPoint.class);
-        this.javaInterfaceFactory = factories.getFactory(JavaInterfaceFactory.class);
+        this.javaInterfaceFactory = compositeContext.getJavaInterfaceFactory();
+        this.propertyValueFactory = factories.getFactory(PropertyValueFactory.class);
         ContextFactoryExtensionPoint contextFactories = extensionPoints.getExtensionPoint(ContextFactoryExtensionPoint.class);
+        this.componentContextFactory = contextFactories.getFactory(ComponentContextFactory.class);
         this.requestContextFactory = contextFactories.getFactory(RequestContextFactory.class);
-        ProxyFactoryExtensionPoint proxyFactories = extensionPoints.getExtensionPoint(ProxyFactoryExtensionPoint.class);
-        proxyFactory = new ExtensibleProxyFactory(proxyFactories);
-        this.conversationManager = utilities.getUtility(ConversationManager.class);
-        StAXArtifactProcessorExtensionPoint processors = extensionPoints.getExtensionPoint(StAXArtifactProcessorExtensionPoint.class);
-        this.componentContextHelper = new CompositeContext(extensionPoints);
+        proxyFactory = compositeContext.getProxyFactory();
+        this.conversationManager = compositeContext.getConversationManager();
     }
 
     /**
@@ -651,9 +653,7 @@ public class CompositeActivatorImpl implements CompositeActivator {
      * @param runtimeComponent
      */
     public void configureComponentContext(RuntimeComponent runtimeComponent) {
-        RuntimeComponentContext componentContext =
-            new ComponentContextImpl(this, assemblyFactory, proxyFactory, interfaceContractMapper,
-                                     requestContextFactory, javaInterfaceFactory, runtimeComponent);
+        RuntimeComponentContext componentContext = (RuntimeComponentContext) componentContextFactory.createComponentContext(runtimeComponent);
         runtimeComponent.setComponentContext(componentContext);
     }
 
@@ -1025,14 +1025,7 @@ public class CompositeActivatorImpl implements CompositeActivator {
      * @return the referenceHelper
      */
     public CompositeContext getCompositeContext() {
-        return componentContextHelper;
-    }
-
-    /**
-     * @return the proxyFactory
-     */
-    public ProxyFactory getProxyFactory() {
-        return proxyFactory;
+        return compositeContext;
     }
 
     /**
@@ -1075,19 +1068,5 @@ public class CompositeActivatorImpl implements CompositeActivator {
         }
         return null;
     }
-
-    /**
-     * @return the javaInterfaceFactory
-     */
-    public JavaInterfaceFactory getJavaInterfaceFactory() {
-        return javaInterfaceFactory;
-    }
-
-    /**
-     * @return the conversationManager
-     */
-    public ConversationManager getConversationManager() {
-        return conversationManager;
-    }
     
 }
diff --git a/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/context/ComponentContextExt.java b/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/context/ComponentContextExt.java
index cb61c57f27..6db3af213d 100644
--- a/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/context/ComponentContextExt.java
+++ b/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/context/ComponentContextExt.java
@@ -27,4 +27,5 @@ import org.apache.tuscany.sca.runtime.RuntimeComponentContext;
  */
 public interface ComponentContextExt extends RuntimeComponentContext {
     CompositeActivator getCompositeActivator();
+    CompositeContext getCompositeContext();
 }
diff --git a/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/context/CompositeContext.java b/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/context/CompositeContext.java
index 76de8a2aaa..c68b05e8fb 100644
--- a/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/context/CompositeContext.java
+++ b/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/context/CompositeContext.java
@@ -21,39 +21,21 @@ 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.OptimizableBinding;
-import org.apache.tuscany.sca.assembly.Reference;
-import org.apache.tuscany.sca.assembly.Service;
-import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor;
-import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessorExtensionPoint;
 import org.apache.tuscany.sca.core.ExtensionPointRegistry;
-import org.apache.tuscany.sca.core.FactoryExtensionPoint;
 import org.apache.tuscany.sca.core.assembly.CompositeActivator;
-import org.apache.tuscany.sca.core.context.impl.ComponentContextImpl;
+import org.apache.tuscany.sca.core.conversation.ConversationManager;
+import org.apache.tuscany.sca.core.invocation.ProxyFactory;
 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;
@@ -65,20 +47,7 @@ import org.osoa.sca.ServiceRuntimeException;
 /**
  * @version $Rev$ $Date$
  */
-public class CompositeContext {
-    private final ExtensionPointRegistry extensionPointRegistry;
-    private final AssemblyFactory assemblyFactory;
-    private final JavaInterfaceFactory javaInterfaceFactory;
-    private final StAXArtifactProcessorExtensionPoint staxProcessors;
-
-    public CompositeContext(ExtensionPointRegistry registry) {
-        this.extensionPointRegistry = registry;
-        FactoryExtensionPoint factories = registry.getExtensionPoint(FactoryExtensionPoint.class);
-        this.assemblyFactory = factories.getFactory(AssemblyFactory.class);
-        this.javaInterfaceFactory = factories.getFactory(JavaInterfaceFactory.class);
-        this.staxProcessors = registry.getExtensionPoint(StAXArtifactProcessorExtensionPoint.class);        
-    }
-    
+public abstract class CompositeContext {
     /**
      * Create a self-reference for a component service
      * @param component
@@ -86,66 +55,10 @@ public class CompositeContext {
      * @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 OptimizableBinding) {
-                OptimizableBinding optimizableBinding = (OptimizableBinding)((OptimizableBinding)binding).clone();
-                optimizableBinding.setTargetBinding(binding);
-                optimizableBinding.setTargetComponent(component);
-                optimizableBinding.setTargetComponentService(service);
-                componentReference.getBindings().add(optimizableBinding);
-            } 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();
-        boolean compatible = false;
-        if (interfaze instanceof JavaInterface) {
-            Class<?> cls = ((JavaInterface)interfaze).getJavaClass();
-            if (businessInterface.isAssignableFrom(cls)) {
-                compatible = true;
-            }
-        }
-        if (!compatible) {
-            // The interface is not assignable from the interface contract
-            interfaceContract = (InterfaceContract)interfaceContract.clone();
-            interfaceContract.setInterface(javaInterfaceFactory.createJavaInterface(businessInterface));
-        }
-
-        return interfaceContract;
-    }
+    public abstract ComponentReference createSelfReference(Component component,
+                                                           ComponentService service,
+                                                           Class<?> businessInterface)
+        throws CloneNotSupportedException, InvalidInterfaceException;
 
     /**
      * Bind a component reference to a component service
@@ -157,108 +70,79 @@ public class CompositeContext {
      * @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 OptimizableBinding) {
-                OptimizableBinding optimizableBinding = (OptimizableBinding)((OptimizableBinding)binding).clone();
-                optimizableBinding.setTargetBinding(binding);
-                optimizableBinding.setTargetComponent(component);
-                optimizableBinding.setTargetComponentService(service);
-                ref.getBindings().add(optimizableBinding);
-            } else {
-                ref.getBindings().add(binding);
-            }
-        }
-        return ref;
-    }
-
-    public void write(Component component, ComponentReference reference, Writer writer) throws IOException {
-        write(component, reference, null, writer);
-    }
+    public abstract RuntimeComponentReference bindComponentReference(Class<?> businessInterface,
+                                                                     RuntimeComponentReference reference,
+                                                                     RuntimeComponent component,
+                                                                     RuntimeComponentService service)
+        throws CloneNotSupportedException, InvalidInterfaceException;
 
-    public void write(Component component, ComponentReference reference, ComponentService service, 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);
-            if (reference != null) {
-                comp.getReferences().add(reference);
-            }
-            if (service != null) {
-                comp.getServices().add(service);
-            }
+    /**
+     * @param component
+     * @param reference
+     * @param writer
+     * @throws IOException
+     */
+    public abstract void write(Component component, ComponentReference reference, Writer writer) throws IOException;
 
-            XMLOutputFactory outputFactory = XMLOutputFactory.newInstance();
-            XMLStreamWriter streamWriter = outputFactory.createXMLStreamWriter(writer);
-            processor.write(composite, streamWriter);
-        } catch (Exception e) {
-            throw new IOException(e.getMessage());
-        }
-    }
+    /**
+     * @param component
+     * @param reference
+     * @param service
+     * @param writer
+     * @throws IOException
+     */
+    public abstract void write(Component component,
+                               ComponentReference reference,
+                               ComponentService service,
+                               Writer writer) throws IOException;
 
-    public String toXML(Component component, ComponentReference reference) throws IOException {
-        StringWriter writer = new StringWriter();
-        write(component, reference, writer);
-        return writer.toString();
-    }
+    /**
+     * @param component
+     * @param reference
+     * @return
+     * @throws IOException
+     */
+    public abstract String toXML(Component component, ComponentReference reference) throws IOException;
 
-    public String toXML(Component component, ComponentService service) throws IOException {
-        StringWriter writer = new StringWriter();
-        write(component, null, service, writer);
-        return writer.toString();
-    }
+    /**
+     * @param component
+     * @param service
+     * @return
+     * @throws IOException
+     */
+    public abstract String toXML(Component component, ComponentService service) throws IOException;
 
-    public RuntimeComponent read(Reader reader) throws IOException {
-        try {
-            XMLInputFactory inputFactory = XMLInputFactory.newInstance();
-            XMLStreamReader streamReader = inputFactory.createXMLStreamReader(reader);
-            return read(streamReader);
-        } catch (Exception e) {
-            throw new IOException(e.getMessage());
-        }
-    }
+    /**
+     * @param reader
+     * @return
+     * @throws IOException
+     */
+    public abstract RuntimeComponent read(Reader reader) throws IOException;
 
-    public RuntimeComponent read(XMLStreamReader streamReader) throws IOException {
-        try {
-            StAXArtifactProcessor<Composite> processor = staxProcessors.getProcessor(Composite.class);
-            Composite composite = processor.read(streamReader);
-            RuntimeComponent component = (RuntimeComponent)composite.getComponents().get(0);
-            return component;
-        } catch (Exception e) {
-            throw new IOException(e.getMessage());
-        }
-    }
+    /**
+     * @param streamReader
+     * @return
+     * @throws IOException
+     */
+    public abstract RuntimeComponent read(XMLStreamReader streamReader) throws IOException;
 
-    public Component fromXML(String xml) throws IOException {
-        return read(new StringReader(xml));
-    }
+    /**
+     * @param xml
+     * @return
+     * @throws IOException
+     */
+    public abstract Component fromXML(String xml) throws IOException;
 
-    public Component fromXML(XMLStreamReader streamReader) throws IOException {
-        return read(streamReader);
-    }
+    /**
+     * @param streamReader
+     * @return
+     * @throws IOException
+     */
+    public abstract Component fromXML(XMLStreamReader streamReader) throws IOException;
 
+    /**
+     * @return
+     */
     public static RuntimeComponent getCurrentComponent() {
         Message message = ThreadMessageContext.getMessageContext();
         if (message != null) {
@@ -272,15 +156,21 @@ public class CompositeContext {
         return null;
     }
 
+    /**
+     * @return
+     */
     public static CompositeActivator getCurrentCompositeActivator() {
         RuntimeComponent component = getCurrentComponent();
         if (component != null) {
-            ComponentContextImpl context = (ComponentContextImpl)component.getComponentContext();
+            ComponentContextExt context = (ComponentContextExt)component.getComponentContext();
             return context.getCompositeActivator();
         }
         return null;
     }
 
+    /**
+     * @return
+     */
     public static CompositeContext getCurrentCompositeContext() {
         CompositeActivator activator = getCurrentCompositeActivator();
         if (activator != null) {
@@ -316,8 +206,20 @@ public class CompositeContext {
         return targetService;
     }
 
-    public ExtensionPointRegistry getExtensionPointRegistry() {
-        return extensionPointRegistry;
-    }
+    public abstract ExtensionPointRegistry getExtensionPointRegistry();
+
+    public abstract ConversationManager getConversationManager();
+
+    /**
+     * Get the java interface factory
+     * @return
+     */
+    public abstract JavaInterfaceFactory getJavaInterfaceFactory();
+
+    /**
+     * Get the proxy factory
+     * @return
+     */
+    public abstract ProxyFactory getProxyFactory();
 
 }
diff --git a/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/context/DefaultComponentContextFactory.java b/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/context/DefaultComponentContextFactory.java
index 51da89499d..f1f808d285 100644
--- a/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/context/DefaultComponentContextFactory.java
+++ b/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/context/DefaultComponentContextFactory.java
@@ -19,20 +19,9 @@
 
 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.ContextFactoryExtensionPoint;
-import org.apache.tuscany.sca.context.RequestContextFactory;
 import org.apache.tuscany.sca.core.ExtensionPointRegistry;
-import org.apache.tuscany.sca.core.FactoryExtensionPoint;
-import org.apache.tuscany.sca.core.UtilityExtensionPoint;
-import org.apache.tuscany.sca.core.assembly.CompositeActivator;
 import org.apache.tuscany.sca.core.context.impl.ComponentContextImpl;
-import org.apache.tuscany.sca.core.invocation.ExtensibleProxyFactory;
-import org.apache.tuscany.sca.core.invocation.ProxyFactory;
-import org.apache.tuscany.sca.core.invocation.ProxyFactoryExtensionPoint;
-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;
 
@@ -40,50 +29,14 @@ 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;
+    private final ExtensionPointRegistry registry;
 
     public DefaultComponentContextFactory(ExtensionPointRegistry registry) {
-        FactoryExtensionPoint factories = registry.getExtensionPoint(FactoryExtensionPoint.class);
-        this.assemblyFactory = factories.getFactory(AssemblyFactory.class);
-        this.javaInterfaceFactory = factories.getFactory(JavaInterfaceFactory.class);
-        UtilityExtensionPoint utilities = registry.getExtensionPoint(UtilityExtensionPoint.class);
-        this.compositeActivator = utilities.getUtility(CompositeActivator.class);
-        this.interfaceContractMapper = utilities.getUtility(InterfaceContractMapper.class);
-        this.requestContextFactory =
-            registry.getExtensionPoint(ContextFactoryExtensionPoint.class).getFactory(RequestContextFactory.class);
-        this.proxyFactory = new ExtensibleProxyFactory(registry.getExtensionPoint(ProxyFactoryExtensionPoint.class));
+        this.registry = registry;
     }
 
-    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);
+    public ComponentContext createComponentContext(RuntimeComponent component) {
+        return new ComponentContextImpl(registry, component);
     }
 
 }
diff --git a/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/context/impl/CallableReferenceImpl.java b/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/context/impl/CallableReferenceImpl.java
index 901a642f1c..71410b7e35 100644
--- a/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/context/impl/CallableReferenceImpl.java
+++ b/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/context/impl/CallableReferenceImpl.java
@@ -88,7 +88,7 @@ public class CallableReferenceImpl<B> implements CallableReferenceExt<B> {
     private transient RuntimeComponentReference clonedRef;
     private transient ReferenceParameters refParams;
     private transient XMLStreamReader xmlReader;
-    
+
     private transient RuntimeWire endpointWire;
 
     /*
@@ -138,7 +138,7 @@ public class CallableReferenceImpl<B> implements CallableReferenceExt<B> {
         // FIXME: Should we normalize the componentName/serviceName URI into an absolute SCA URI in the SCA binding?
         // sca:component1/component11/component112/service1?
         this.compositeActivator = compositeActivator;
-        this.conversationManager = this.compositeActivator.getConversationManager();
+        this.conversationManager = this.compositeActivator.getCompositeContext().getConversationManager();
         initCallbackID();
     }
 
@@ -151,7 +151,7 @@ public class CallableReferenceImpl<B> implements CallableReferenceExt<B> {
     public RuntimeWire getRuntimeWire() {
         try {
             resolve();
-            if (endpointWire != null){
+            if (endpointWire != null) {
                 return endpointWire;
             } else if (reference != null) {
                 return reference.getRuntimeWire(binding);
@@ -165,15 +165,15 @@ public class CallableReferenceImpl<B> implements CallableReferenceExt<B> {
 
     protected void bind(RuntimeWire wire) {
         if (wire != null) {
-            
-            if (wire instanceof EndpointWireImpl){
+
+            if (wire instanceof EndpointWireImpl) {
                 endpointWire = wire;
             }
             this.component = wire.getSource().getComponent();
             this.reference = (RuntimeComponentReference)wire.getSource().getContract();
             this.binding = wire.getSource().getBinding();
             this.compositeActivator = ((ComponentContextExt)component.getComponentContext()).getCompositeActivator();
-            this.conversationManager = this.compositeActivator.getConversationManager();
+            this.conversationManager = this.compositeActivator.getCompositeContext().getConversationManager();
             initCallbackID();
         }
     }
@@ -189,7 +189,7 @@ public class CallableReferenceImpl<B> implements CallableReferenceExt<B> {
     public B getProxy() throws ObjectCreationException {
         try {
             if (proxy == null) {
-                proxy = createProxy(); 
+                proxy = createProxy();
             }
             return businessInterface.cast(proxy);
         } catch (Exception e) {
@@ -197,13 +197,13 @@ public class CallableReferenceImpl<B> implements CallableReferenceExt<B> {
         }
     }
 
-	public void setProxy(Object proxy) {
-	    this.proxy = proxy;
-	}
+    public void setProxy(Object proxy) {
+        this.proxy = proxy;
+    }
 
     protected Object createProxy() throws Exception {
         return proxyFactory.createProxy(this);
-	}
+    }
 
     public B getService() {
         try {
@@ -220,12 +220,12 @@ public class CallableReferenceImpl<B> implements CallableReferenceExt<B> {
             return businessInterface;
         } catch (Exception e) {
             throw new ServiceRuntimeException(e);
-        }            
+        }
     }
 
     public boolean isConversational() {
         try {
-            resolve();        
+            resolve();
             return reference == null ? false : reference.getInterfaceContract().getInterface().isConversational();
         } catch (Exception e) {
             throw new ServiceRuntimeException(e);
@@ -237,12 +237,12 @@ public class CallableReferenceImpl<B> implements CallableReferenceExt<B> {
             // resolve from XML just in case this CallableReference is the result of
             // passing a CallableReference as a parameter
             resolve();
-            
+
             if (conversation == null || conversation.getState() == ConversationState.ENDED) {
                 conversation = null;
             }
             return conversation;
-        
+
         } catch (Exception e) {
             throw new ServiceRuntimeException(e);
         }
@@ -250,11 +250,11 @@ public class CallableReferenceImpl<B> implements CallableReferenceExt<B> {
 
     public Object getCallbackID() {
         try {
-            resolve();        
+            resolve();
             return callbackID;
         } catch (Exception e) {
             throw new ServiceRuntimeException(e);
-        }        
+        }
     }
 
     /**
@@ -277,14 +277,14 @@ public class CallableReferenceImpl<B> implements CallableReferenceExt<B> {
             CompositeContext componentContextHelper = CompositeContext.getCurrentCompositeContext();
             if (componentContextHelper != null) {
                 this.compositeActivator = CompositeContext.getCurrentCompositeActivator();
-                this.conversationManager = this.compositeActivator.getConversationManager();
+                this.conversationManager = componentContextHelper.getConversationManager();
                 Component c;
                 if (xmlReader != null) {
                     c = componentContextHelper.fromXML(xmlReader);
-                    xmlReader = null;  // OK to GC this now
+                    xmlReader = null; // OK to GC this now
                 } else {
                     c = componentContextHelper.fromXML(scdl);
-                    scdl = null;  // OK to GC this now
+                    scdl = null; // OK to GC this now
                 }
                 this.component = (RuntimeComponent)c;
                 compositeActivator.configureComponentContext(this.component);
@@ -309,21 +309,21 @@ public class CallableReferenceImpl<B> implements CallableReferenceExt<B> {
                         // Resolve the Component
                         final String bindingURI = binding.getURI();
                         final Component targetComponent = resolveComponentURI(bindingURI);
-                        
+
                         // Find the Service
                         ComponentService targetService = resolveServiceURI(bindingURI, targetComponent);
-                        
+
                         // if the target service is a promoted service then find the
                         // service it promotes
                         if ((targetService != null) && (targetService.getService() instanceof CompositeService)) {
-                            CompositeService compositeService = (CompositeService) targetService.getService();
+                            CompositeService compositeService = (CompositeService)targetService.getService();
                             // Find the promoted component service
                             ComponentService promotedComponentService = getPromotedComponentService(compositeService);
                             if (promotedComponentService != null && !promotedComponentService.isUnresolved()) {
                                 targetService = promotedComponentService;
                             }
                         }
-                        
+
                         OptimizableBinding optimizableBinding = (OptimizableBinding)binding;
                         optimizableBinding.setTargetComponent(targetComponent);
                         optimizableBinding.setTargetComponentService(targetService);
@@ -357,28 +357,28 @@ public class CallableReferenceImpl<B> implements CallableReferenceExt<B> {
                             }
                         });
                         javaInterface.setJavaClass(classLoader.loadClass(javaInterface.getName()));
-                        compositeActivator.getJavaInterfaceFactory().createJavaInterface(javaInterface,
-                                                                                       javaInterface.getJavaClass());
+                        compositeActivator.getCompositeContext().getJavaInterfaceFactory()
+                            .createJavaInterface(javaInterface, javaInterface.getJavaClass());
                         //FIXME: If the interface needs XSDs to be loaded (e.g., for static SDO),
                         // this needs to be done here.  We usually search for XSDs in the current
                         // contribution at resolve time.  Is it possible to locate the current
                         // contribution at runtime?
-                        }
+                    }
                     this.businessInterface = (Class<B>)javaInterface.getJavaClass();
                 }
                 if (binding instanceof BindingBuilderExtension) {
                     ((BindingBuilderExtension)binding).getBuilder().build(component, reference, binding, null);
                 }
-                this.proxyFactory = compositeActivator.getProxyFactory();
+                this.proxyFactory = compositeActivator.getCompositeContext().getProxyFactory();
             }
         } else {
             this.compositeActivator = CompositeContext.getCurrentCompositeActivator();
             if (this.compositeActivator != null) {
-                this.proxyFactory = this.compositeActivator.getProxyFactory();
+                this.proxyFactory = this.compositeActivator.getCompositeContext().getProxyFactory();
             }
         }
     }
-    
+
     /**
      * Follow a service promotion chain down to the inner most (non composite)
      * component service.
@@ -386,26 +386,26 @@ public class CallableReferenceImpl<B> implements CallableReferenceExt<B> {
      * @param topCompositeService
      * @return
      */
-     private ComponentService getPromotedComponentService(CompositeService compositeService) {
+    private ComponentService getPromotedComponentService(CompositeService compositeService) {
         ComponentService componentService = compositeService.getPromotedService();
         if (componentService != null) {
             Service service = componentService.getService();
             if (componentService.getName() != null && service instanceof CompositeService) {
-    
+
                 // Continue to follow the service promotion chain
                 return getPromotedComponentService((CompositeService)service);
-    
+
             } else {
-    
+
                 // Found a non-composite service
                 return componentService;
             }
         } else {
-    
+
             // No promoted service
             return null;
         }
-    }    
+    }
 
     /**
      * @see java.io.Externalizable#writeExternal(java.io.ObjectOutput)
@@ -436,29 +436,28 @@ public class CallableReferenceImpl<B> implements CallableReferenceExt<B> {
             }
             if (refParams == null) {
                 refParams = new ReferenceParametersImpl();
-               
+
                 // remove any existing reference parameters from the clone                
                 Object toRemove = null;
-                for (Object extension : clonedRef.getExtensions()){
-                    if (extension instanceof ReferenceParameters){
+                for (Object extension : clonedRef.getExtensions()) {
+                    if (extension instanceof ReferenceParameters) {
                         toRemove = extension;
                     }
                 }
-               
-                if (toRemove != null){
+
+                if (toRemove != null) {
                     clonedRef.getExtensions().remove(toRemove);
                 }
-                
+
                 // add the new reference parameter object
                 clonedRef.getExtensions().add(refParams);
             }
             refParams.setCallbackID(callbackID);
-            if (conversation != null){
+            if (conversation != null) {
                 refParams.setConversationID(conversation.getConversationID());
             }
-            return ((CompositeActivatorImpl)compositeActivator).getCompositeContext()
-                    .toXML(component, clonedRef);
-        } else { 
+            return ((CompositeActivatorImpl)compositeActivator).getCompositeContext().toXML(component, clonedRef);
+        } else {
             return scdl;
         }
     }
@@ -479,7 +478,7 @@ public class CallableReferenceImpl<B> implements CallableReferenceExt<B> {
     public void attachConversationID(Object conversationID) {
         this.conversationID = conversationID;
     }
-    
+
     public void attachConversation(ConversationExt conversation) {
         this.conversation = conversation;
     }
@@ -487,7 +486,7 @@ public class CallableReferenceImpl<B> implements CallableReferenceExt<B> {
     public void attachConversation(Object conversationID) {
         if (conversationID != null) {
             ConversationExt conversation = conversationManager.getConversation(conversationID);
-            if (conversation == null){
+            if (conversation == null) {
                 conversation = conversationManager.startConversation(conversationID);
             }
             this.conversation = conversation;
@@ -507,8 +506,8 @@ public class CallableReferenceImpl<B> implements CallableReferenceExt<B> {
 
     public EndpointReference getEndpointReference() {
         try {
-            resolve();  
-            
+            resolve();
+
             // Use the interface contract of the reference on the component type
             Reference componentTypeRef = reference.getReference();
             InterfaceContract sourceContract =
@@ -520,7 +519,7 @@ public class CallableReferenceImpl<B> implements CallableReferenceExt<B> {
             return epr;
         } catch (Exception e) {
             throw new ServiceRuntimeException(e);
-        }        
+        }
     }
 
     public XMLStreamReader getXMLReader() {
@@ -571,14 +570,14 @@ public class CallableReferenceImpl<B> implements CallableReferenceExt<B> {
      * @return The Service with the specified serviceName or null if no such Service found.
      */
     protected ComponentService resolveServiceURI(String bindingURI, Component targetComponent) {
-        
+
         ComponentService targetService = null;
-        
+
         if (targetComponent != null) {
             if (bindingURI.startsWith("/")) {
                 bindingURI = bindingURI.substring(1);
             }
-    
+
             final String componentURI = targetComponent.getURI();
             final String serviceName;
             if (componentURI.equals(bindingURI)) {
diff --git a/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/context/impl/ComponentContextImpl.java b/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/context/impl/ComponentContextImpl.java
index 9538eb755f..d35d02aa1b 100644
--- a/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/context/impl/ComponentContextImpl.java
+++ b/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/context/impl/ComponentContextImpl.java
@@ -34,16 +34,20 @@ import org.apache.tuscany.sca.assembly.Multiplicity;
 import org.apache.tuscany.sca.assembly.OptimizableBinding;
 import org.apache.tuscany.sca.assembly.Reference;
 import org.apache.tuscany.sca.assembly.Service;
+import org.apache.tuscany.sca.context.ContextFactoryExtensionPoint;
 import org.apache.tuscany.sca.context.PropertyValueFactory;
 import org.apache.tuscany.sca.context.RequestContextFactory;
 import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.core.FactoryExtensionPoint;
+import org.apache.tuscany.sca.core.UtilityExtensionPoint;
 import org.apache.tuscany.sca.core.assembly.CompositeActivator;
 import org.apache.tuscany.sca.core.context.ComponentContextExt;
 import org.apache.tuscany.sca.core.context.CompositeContext;
+import org.apache.tuscany.sca.core.invocation.ExtensibleProxyFactory;
 import org.apache.tuscany.sca.core.invocation.ProxyFactory;
+import org.apache.tuscany.sca.core.invocation.ProxyFactoryExtensionPoint;
 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;
@@ -68,30 +72,19 @@ public class ComponentContextImpl implements ComponentContextExt {
     private final ProxyFactory proxyFactory;
     private final AssemblyFactory assemblyFactory;
     private final JavaInterfaceFactory javaInterfaceFactory;
-
-    /**
-     * This is a reference to the PropertyValueFactory that is provided by the Implementation
-     * that can be used to get the value from a Property Object.
-     * 
-     * @see #setPropertyValueFactory(PropertyValueFactory)
-     * @see #getProperty(Class, String)
-     */
-    private PropertyValueFactory propertyFactory;
-
-    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;
+    private final PropertyValueFactory propertyFactory;
+    
+    public ComponentContextImpl(ExtensionPointRegistry registry, RuntimeComponent component) {
         this.component = component;
+        FactoryExtensionPoint factories = registry.getExtensionPoint(FactoryExtensionPoint.class);
+        this.assemblyFactory = factories.getFactory(AssemblyFactory.class);
+        this.javaInterfaceFactory = factories.getFactory(JavaInterfaceFactory.class);
+        UtilityExtensionPoint utilities = registry.getExtensionPoint(UtilityExtensionPoint.class);
+        this.compositeActivator = utilities.getUtility(CompositeActivator.class);
+        this.requestContextFactory =
+            registry.getExtensionPoint(ContextFactoryExtensionPoint.class).getFactory(RequestContextFactory.class);
+        this.proxyFactory = new ExtensibleProxyFactory(registry.getExtensionPoint(ProxyFactoryExtensionPoint.class));
+        this.propertyFactory = factories.getFactory(PropertyValueFactory.class);
     }
 
     public String getURI() {
@@ -132,19 +125,6 @@ public class ComponentContextImpl implements ComponentContextExt {
     }
 
     /**
-     * The Implementation is responsible for calling this method to set the 
-     * PropertyValueFactory that is used to get the Property Value from 
-     * a Tuscany Property object.
-     *   
-     * @param factory The PropertyValueFactory to use
-     * 
-     * @see #getProperty(Class, String)
-     */
-    public void setPropertyValueFactory(PropertyValueFactory factory) {
-        propertyFactory = factory;
-    }
-
-    /**
      * Gets the value for the specified property with the specified type.
      * 
      * @param type The type of the property value we are getting
@@ -455,8 +435,12 @@ public class ComponentContextImpl implements ComponentContextExt {
     }
     /* ******************** Contribution for issue TUSCANY-2281 ******************** */
 
+    public CompositeContext getCompositeContext() {
+        return compositeActivator.getCompositeContext();
+    }
+
     public ExtensionPointRegistry getExtensionPointRegistry() {
-        return compositeActivator.getCompositeContext().getExtensionPointRegistry();
+        return getCompositeContext().getExtensionPointRegistry();
     }
 
 }
diff --git a/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/context/impl/CompositeContextImpl.java b/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/context/impl/CompositeContextImpl.java
new file mode 100644
index 0000000000..71f4e2c9a1
--- /dev/null
+++ b/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/context/impl/CompositeContextImpl.java
@@ -0,0 +1,355 @@
+/*
+ * 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.impl;
+
+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.OptimizableBinding;
+import org.apache.tuscany.sca.assembly.Reference;
+import org.apache.tuscany.sca.assembly.Service;
+import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor;
+import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessorExtensionPoint;
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.core.FactoryExtensionPoint;
+import org.apache.tuscany.sca.core.UtilityExtensionPoint;
+import org.apache.tuscany.sca.core.assembly.CompositeActivator;
+import org.apache.tuscany.sca.core.context.CompositeContext;
+import org.apache.tuscany.sca.core.conversation.ConversationManager;
+import org.apache.tuscany.sca.core.invocation.ExtensibleProxyFactory;
+import org.apache.tuscany.sca.core.invocation.ProxyFactory;
+import org.apache.tuscany.sca.core.invocation.ProxyFactoryExtensionPoint;
+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 CompositeContextImpl extends CompositeContext {
+    private final ExtensionPointRegistry extensionPointRegistry;
+    private final UtilityExtensionPoint utilityExtensionPoint;
+    private final AssemblyFactory assemblyFactory;
+    private final JavaInterfaceFactory javaInterfaceFactory;
+    private final StAXArtifactProcessorExtensionPoint staxProcessors;
+    private final XMLInputFactory xmlInputFactory;
+    private final XMLOutputFactory xmlOutputFactory;
+    private final ProxyFactory proxyFactory;
+
+    public CompositeContextImpl(ExtensionPointRegistry registry) {
+        this.extensionPointRegistry = registry;
+        this.utilityExtensionPoint = extensionPointRegistry.getExtensionPoint(UtilityExtensionPoint.class);
+        FactoryExtensionPoint factories = registry.getExtensionPoint(FactoryExtensionPoint.class);
+        this.xmlInputFactory = factories.getFactory(XMLInputFactory.class);
+        this.xmlOutputFactory = factories.getFactory(XMLOutputFactory.class);
+        this.assemblyFactory = factories.getFactory(AssemblyFactory.class);
+        this.javaInterfaceFactory = factories.getFactory(JavaInterfaceFactory.class);
+        this.staxProcessors = registry.getExtensionPoint(StAXArtifactProcessorExtensionPoint.class);
+        ProxyFactoryExtensionPoint proxyFactories = extensionPointRegistry.getExtensionPoint(ProxyFactoryExtensionPoint.class);
+        this.proxyFactory = new ExtensibleProxyFactory(proxyFactories);
+    }
+    
+    /**
+     * 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 OptimizableBinding) {
+                OptimizableBinding optimizableBinding = (OptimizableBinding)((OptimizableBinding)binding).clone();
+                optimizableBinding.setTargetBinding(binding);
+                optimizableBinding.setTargetComponent(component);
+                optimizableBinding.setTargetComponentService(service);
+                componentReference.getBindings().add(optimizableBinding);
+            } 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();
+        boolean compatible = false;
+        if (interfaze instanceof JavaInterface) {
+            Class<?> cls = ((JavaInterface)interfaze).getJavaClass();
+            if (businessInterface.isAssignableFrom(cls)) {
+                compatible = true;
+            }
+        }
+        if (!compatible) {
+            // 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 OptimizableBinding) {
+                OptimizableBinding optimizableBinding = (OptimizableBinding)((OptimizableBinding)binding).clone();
+                optimizableBinding.setTargetBinding(binding);
+                optimizableBinding.setTargetComponent(component);
+                optimizableBinding.setTargetComponentService(service);
+                ref.getBindings().add(optimizableBinding);
+            } else {
+                ref.getBindings().add(binding);
+            }
+        }
+        return ref;
+    }
+
+    public void write(Component component, ComponentReference reference, Writer writer) throws IOException {
+        write(component, reference, null, writer);
+    }
+
+    public void write(Component component, ComponentReference reference, ComponentService service, 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);
+            if (reference != null) {
+                comp.getReferences().add(reference);
+            }
+            if (service != null) {
+                comp.getServices().add(service);
+            }
+
+            XMLStreamWriter streamWriter = xmlOutputFactory.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 String toXML(Component component, ComponentService service) throws IOException {
+        StringWriter writer = new StringWriter();
+        write(component, null, service, writer);
+        return writer.toString();
+    }
+
+    public RuntimeComponent read(Reader reader) throws IOException {
+        try {
+            XMLStreamReader streamReader = xmlInputFactory.createXMLStreamReader(reader);
+            return read(streamReader);
+        } catch (Exception e) {
+            throw new IOException(e.getMessage());
+        }
+    }
+
+    public RuntimeComponent read(XMLStreamReader streamReader) throws IOException {
+        try {
+            StAXArtifactProcessor<Composite> processor = staxProcessors.getProcessor(Composite.class);
+            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 Component fromXML(XMLStreamReader streamReader) throws IOException {
+        return read(streamReader);
+    }
+
+    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 CompositeContext getCurrentCompositeContext() {
+        CompositeActivator activator = getCurrentCompositeActivator();
+        if (activator != null) {
+            return activator.getCompositeContext();
+        }
+        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;
+    }
+
+    public ExtensionPointRegistry getExtensionPointRegistry() {
+        return extensionPointRegistry;
+    }
+
+    public ConversationManager getConversationManager() {
+        return utilityExtensionPoint.getUtility(ConversationManager.class);
+    }
+
+    /**
+     * Get the java interface factory
+     * @return
+     */
+    public JavaInterfaceFactory getJavaInterfaceFactory() {
+        return javaInterfaceFactory;
+    }
+
+    /**
+     * Get the proxy factory
+     * @return
+     */
+    public ProxyFactory getProxyFactory() {
+        return proxyFactory;
+    }
+
+}
diff --git a/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/context/impl/RequestContextImpl.java b/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/context/impl/RequestContextImpl.java
index bd4a49a71a..5f57d26456 100644
--- a/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/context/impl/RequestContextImpl.java
+++ b/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/context/impl/RequestContextImpl.java
@@ -24,6 +24,7 @@ import javax.security.auth.Subject;
 
 import org.apache.tuscany.sca.core.ExtensionPointRegistry;
 import org.apache.tuscany.sca.core.context.CallableReferenceExt;
+import org.apache.tuscany.sca.core.invocation.ExtensibleProxyFactory;
 import org.apache.tuscany.sca.core.invocation.ProxyFactory;
 import org.apache.tuscany.sca.core.invocation.ProxyFactoryExtensionPoint;
 import org.apache.tuscany.sca.core.invocation.ThreadMessageContext;
@@ -101,8 +102,7 @@ public class RequestContextImpl implements RequestContext {
         JavaInterface javaInterface = (JavaInterface) callbackReference.getInterfaceContract().getInterface();
         Class<CB> javaClass = (Class<CB>)javaInterface.getJavaClass();
         List<RuntimeWire> wires = callbackReference.getRuntimeWires();
-        ProxyFactory proxyFactory = javaClass.isInterface() ? proxyFactoryExtensionPoint.getInterfaceProxyFactory() :
-            proxyFactoryExtensionPoint.getClassProxyFactory();
+        ProxyFactory proxyFactory = new ExtensibleProxyFactory(proxyFactoryExtensionPoint);
         CallbackReferenceImpl ref = CallbackReferenceImpl.newInstance(javaClass, proxyFactory, wires);
         if (ref != null) {  
             //ref.resolveTarget();