Pulled a recent revision of trunk into the sca-android branch, to apply the android patches from JIRA TUSCANY-2440 to it.

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@695318 13f79535-47bb-0310-9956-ffa450edef68

11 files changed, 1116 insertions, 0 deletions

diff --git a/branches/sca-android/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/DistributedSCABinding.java b/branches/sca-android/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/DistributedSCABinding.java
new file mode 100644
index 0000000000..167c93e86d
--- /dev/null
+++ b/branches/sca-android/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/DistributedSCABinding.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.binding.sca;

+

+import org.apache.tuscany.sca.assembly.Binding;

+import org.apache.tuscany.sca.assembly.SCABinding;

+

+

+/**

+ * Represents an SCA binding used in the distributed runtime.

+ * At the moment just provides us with a sensibly named type 

+ * against which the distributed sca binding providers can be registered

+ * 

+ * @version $Rev: 556322 $ $Date: 2007-07-14 19:53:15 +0100 (Sat, 14 Jul 2007) $

+ */

+public interface DistributedSCABinding extends Binding {

+    

+    SCABinding getSCABinding();

+    void setSCABinding(SCABinding scaBinding);

+

+}

diff --git a/branches/sca-android/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/SCABindingDefinitionsProvider.java b/branches/sca-android/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/SCABindingDefinitionsProvider.java
new file mode 100644
index 0000000000..bd24d4b14c
--- /dev/null
+++ b/branches/sca-android/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/SCABindingDefinitionsProvider.java
@@ -0,0 +1,73 @@
+/*
+ * 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.binding.sca;
+
+import java.net.URI;
+import java.net.URL;
+import java.security.AccessController;
+import java.security.PrivilegedAction;
+import java.security.PrivilegedExceptionAction;
+
+import org.apache.tuscany.sca.contribution.processor.URLArtifactProcessor;
+import org.apache.tuscany.sca.contribution.processor.URLArtifactProcessorExtensionPoint;
+import org.apache.tuscany.sca.contribution.service.ContributionReadException;
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.definitions.SCADefinitions;
+import org.apache.tuscany.sca.provider.SCADefinitionsProvider;
+import org.apache.tuscany.sca.provider.SCADefinitionsProviderException;
+
+/**
+ * Provider for Policy Intents and PolicySet definitions related to security
+ *
+ * @version $Rev$ $Date$
+ */
+public class SCABindingDefinitionsProvider implements SCADefinitionsProvider {
+    private String definitionsFile = "org/apache/tuscany/sca/binding/sca/definitions.xml";
+    URLArtifactProcessor urlArtifactProcessor = null;
+    
+    public SCABindingDefinitionsProvider(ExtensionPointRegistry registry) {
+        URLArtifactProcessorExtensionPoint documentProcessors = registry.getExtensionPoint(URLArtifactProcessorExtensionPoint.class);
+        urlArtifactProcessor = (URLArtifactProcessor)documentProcessors.getProcessor(SCADefinitions.class);
+    }
+
+    public SCADefinitions getSCADefinition() throws SCADefinitionsProviderException {
+        // Allow privileged access to load resource. Requires RuntimePermssion in security policy.
+        final URL definitionsFileUrl = AccessController.doPrivileged(new PrivilegedAction<URL>() {
+            public URL run() {
+                return getClass().getClassLoader().getResource(definitionsFile);
+            }
+        });
+
+        SCADefinitions scaDefn = null;
+        try {
+            final URI uri = new URI(definitionsFile);
+            // Allow bindings to read properties. Requires PropertyPermission read in security policy. 
+            scaDefn = AccessController.doPrivileged(new PrivilegedExceptionAction<SCADefinitions>() {
+                public SCADefinitions run() throws ContributionReadException {
+                    return (SCADefinitions)urlArtifactProcessor.read(null, uri, definitionsFileUrl);
+                }
+            });
+        } catch (Exception e) {
+            throw new SCADefinitionsProviderException(e);
+        }
+        return scaDefn;
+    }
+
+}
diff --git a/branches/sca-android/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/impl/DistributedSCABindingImpl.java b/branches/sca-android/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/impl/DistributedSCABindingImpl.java
new file mode 100644
index 0000000000..43b0cd8f4e
--- /dev/null
+++ b/branches/sca-android/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/impl/DistributedSCABindingImpl.java
@@ -0,0 +1,116 @@
+/*

+ * 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.binding.sca.impl;

+

+import org.apache.tuscany.sca.assembly.SCABinding;

+import org.apache.tuscany.sca.binding.sca.DistributedSCABinding;

+

+/**

+ * The Distributed SCA binding wrapper for the SCA binding model object. This is currently

+ * just used to locate the remote binding extension and pass the SCA binding to the remote

+ * extension. It isn't used in the model itself

+ * 

+ * @version $Rev: 564307 $ $Date: 2007-08-09 18:48:29 +0100 (Thu, 09 Aug 2007) $

+ */

+public class DistributedSCABindingImpl implements DistributedSCABinding {

+    

+    private SCABinding scaBinding;

+    

+    /**

+     * Getter for the wrapped sca binding model object

+     * 

+     * @return the sca binding model element

+     */

+    public SCABinding getSCABinding(){

+        return scaBinding;

+    }

+    

+    /**

+     * Setter for the wrapped sca binding model element

+     * 

+     * @param scaBinding the sca binding model element

+     */

+    public void setSCABinding(SCABinding scaBinding){

+        this.scaBinding = scaBinding;

+    }

+

+    

+    // Operation implementations provided to make this class a 

+    // valid Binding

+    

+    /**

+     * Returns the binding URI.

+     * 

+     * @return the binding URI

+     */

+    public String getURI(){

+        return null;

+    }

+

+    /**

+     * Sets the binding URI.

+     * 

+     * @param uri the binding URI

+     */

+    public void setURI(String uri){

+    }

+

+    /**

+     * Returns the binding name.

+     * 

+     * @return the binding name

+     */

+    public String getName(){

+        return null;

+    }

+

+    /**

+     * Sets the binding name.

+     * 

+     * @param name the binding name

+     */

+    public void setName(String name){

+    }

+    

+    /**

+     * Returns true if the model element is unresolved.

+     * 

+     * @return true if the model element is unresolved.

+     */

+    public boolean isUnresolved(){

+        return false;

+    }

+

+    /**

+     * Sets whether the model element is unresolved.

+     * 

+     * @param unresolved whether the model element is unresolved

+     */

+    public void setUnresolved(boolean unresolved){

+    }

+    

+    /**

+     * Clone the binding

+     */

+    @Override

+    public Object clone() throws CloneNotSupportedException {

+        return super.clone();

+    }     

+

+}

diff --git a/branches/sca-android/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/impl/RemoteBindingHelper.java b/branches/sca-android/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/impl/RemoteBindingHelper.java
new file mode 100644
index 0000000000..86629fb378
--- /dev/null
+++ b/branches/sca-android/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/impl/RemoteBindingHelper.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.binding.sca.impl;

+

+/**

+ * TODO: TUSCANY-2578, implement a pluggable mechanism so sca binding impls can 

+ *               add their own code to the decision on whether or not to use

+ *               the remote binding provider.

+ */

+public class RemoteBindingHelper {

+    

+    private static boolean alwaysRemote;

+    static {

+        try {

+            Class.forName("org.apache.tuscany.sca.binding.sca.jms.JMSSCABindingProviderFactory");

+            alwaysRemote = true;

+        } catch (ClassNotFoundException e) {

+            alwaysRemote = false;

+        }

+    }

+    

+    public static boolean isTargetRemote() {

+        return alwaysRemote;

+    }

+

+}

diff --git a/branches/sca-android/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/impl/RuntimeSCABindingProvider.java b/branches/sca-android/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/impl/RuntimeSCABindingProvider.java
new file mode 100644
index 0000000000..5c1cefb808
--- /dev/null
+++ b/branches/sca-android/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/impl/RuntimeSCABindingProvider.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.binding.sca.impl;
+
+import org.apache.tuscany.sca.assembly.SCABinding;
+import org.apache.tuscany.sca.interfacedef.InterfaceContract;
+import org.apache.tuscany.sca.interfacedef.Operation;
+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;
+
+/**
+ * The local SCA Binding provider implementation. It is not currently used. 
+ * 
+ * @version $Rev$ $Date$
+ */
+public class RuntimeSCABindingProvider implements ReferenceBindingProvider {
+    
+    private RuntimeComponentReference reference;
+    
+    public RuntimeSCABindingProvider(RuntimeComponent component, RuntimeComponentReference reference, SCABinding binding) {
+        this.reference = reference;
+    }
+    
+    public InterfaceContract getBindingInterfaceContract() {
+        return reference.getInterfaceContract();
+    }
+
+    public Invoker createInvoker(Operation operation) {
+        return null;
+    }
+
+    public void start() {
+    }
+
+    public void stop() {
+    }
+    
+    public boolean supportsOneWayInvocation() {
+        return false;
+    }
+
+}
diff --git a/branches/sca-android/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/impl/RuntimeSCABindingProviderFactory.java b/branches/sca-android/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/impl/RuntimeSCABindingProviderFactory.java
new file mode 100644
index 0000000000..5dda74f72e
--- /dev/null
+++ b/branches/sca-android/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/impl/RuntimeSCABindingProviderFactory.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.binding.sca.impl;
+
+import org.apache.tuscany.sca.assembly.SCABinding;
+import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint;
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.provider.BindingProviderFactory;
+import org.apache.tuscany.sca.provider.ReferenceBindingProvider;
+import org.apache.tuscany.sca.provider.ServiceBindingProvider;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+import org.apache.tuscany.sca.runtime.RuntimeComponentReference;
+import org.apache.tuscany.sca.runtime.RuntimeComponentService;
+
+/**
+ * The factory for creating SCA Binding providers
+ * 
+ * @version $Rev$ $Date$
+ */
+public class RuntimeSCABindingProviderFactory implements BindingProviderFactory<SCABinding> {
+    
+    private ExtensionPointRegistry extensionPoints;
+    
+    public RuntimeSCABindingProviderFactory(ExtensionPointRegistry extensionPoints) {
+        this.extensionPoints = extensionPoints;
+     
+    } 
+    
+    public ReferenceBindingProvider createReferenceBindingProvider(RuntimeComponent component,
+                                                                   RuntimeComponentReference reference,
+                                                                   SCABinding binding) {
+              
+        return  new RuntimeSCAReferenceBindingProvider(extensionPoints, component, reference, binding);
+    }
+
+    public ServiceBindingProvider createServiceBindingProvider(RuntimeComponent component,
+                                                               RuntimeComponentService service,
+                                                               SCABinding binding) {
+        return new RuntimeSCAServiceBindingProvider(extensionPoints, component, service, binding);
+    }
+
+    public Class<SCABinding> getModelType() {
+        return SCABinding.class;
+    }
+}
diff --git a/branches/sca-android/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/impl/RuntimeSCAReferenceBindingProvider.java b/branches/sca-android/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/impl/RuntimeSCAReferenceBindingProvider.java
new file mode 100644
index 0000000000..850fd77e96
--- /dev/null
+++ b/branches/sca-android/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/impl/RuntimeSCAReferenceBindingProvider.java
@@ -0,0 +1,236 @@
+/*
+ * 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.binding.sca.impl;
+
+import java.net.URI;
+import java.util.logging.Logger;
+
+import org.apache.tuscany.sca.assembly.OptimizableBinding;
+import org.apache.tuscany.sca.assembly.SCABinding;
+import org.apache.tuscany.sca.binding.sca.DistributedSCABinding;
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+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.provider.BindingProviderFactory;
+import org.apache.tuscany.sca.provider.ProviderFactoryExtensionPoint;
+import org.apache.tuscany.sca.provider.ReferenceBindingProvider;
+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.ServiceUnavailableException;
+
+/** 
+ * The sca reference binding provider mediates between the twin requirements of 
+ * local sca bindings and remote sca bindings. In the local case is does 
+ * very little. When the sca binding model is set as being remote (because a 
+ * reference target can't be resolved in the current model) this binding will 
+ * try and create a remote connection to it
+ * 
+ * @version $Rev$ $Date$
+ */
+public class RuntimeSCAReferenceBindingProvider implements ReferenceBindingProvider {
+
+    private static final Logger logger = Logger.getLogger(RuntimeSCAReferenceBindingProvider.class.getName());
+
+    private RuntimeComponent component;
+    private RuntimeComponentReference reference;
+    private SCABinding binding;
+    private boolean started = false;
+
+    private BindingProviderFactory<DistributedSCABinding> distributedProviderFactory = null;
+    private ReferenceBindingProvider distributedProvider = null;
+
+    public RuntimeSCAReferenceBindingProvider(ExtensionPointRegistry extensionPoints,
+                                              RuntimeComponent component,
+                                              RuntimeComponentReference reference,
+                                              SCABinding binding) {
+        this.component = component;
+        this.reference = reference;
+        this.binding = binding;
+
+        // look to see if a distributed SCA binding implementation has
+        // been included on the classpath. This will be needed by the 
+        // provider itself to do it's thing
+        ProviderFactoryExtensionPoint factoryExtensionPoint =
+            extensionPoints.getExtensionPoint(ProviderFactoryExtensionPoint.class);
+        distributedProviderFactory =
+            (BindingProviderFactory<DistributedSCABinding>)factoryExtensionPoint
+                .getProviderFactory(DistributedSCABinding.class);
+
+    }
+
+    public boolean isTargetRemote() {
+        boolean targetIsRemote = false;
+
+        // first look at the target service and see if this has been resolved
+        OptimizableBinding optimizableBinding = (OptimizableBinding)binding;
+
+        // The decision is based on the results of the wiring process in the assembly model
+        // The SCA binding is used to represent unresolved reference targets, i.e. those
+        // reference targets that need resolving at run time. We can tell by lookin if the 
+        // service to which this binding refers is resolved or not. 
+        //
+        // TODO - When a callback is in operation. A callback reference bindings sometimes has to 
+        //        act as though there is a local wire and sometimes as if there is a remote wire
+        //        what are the implications of this here?
+
+        if (RemoteBindingHelper.isTargetRemote()) {
+            if (reference.getInterfaceContract() != null) {
+                targetIsRemote = reference.getInterfaceContract().getInterface().isRemotable();
+            } else {
+                targetIsRemote = true;
+            }
+        } else if (optimizableBinding.getTargetComponentService() != null) {
+            if (optimizableBinding.getTargetComponentService().isUnresolved() == true) {
+                targetIsRemote = true;
+            } else {
+                targetIsRemote = false;
+            }
+        } else {
+            // the case where the wire is specified by URI, e.g. callbacks or user specified bindings, and
+            // look at the provided URI to decide whether it is a local or remote case
+            try {
+                URI uri = new URI(binding.getURI());
+                if (uri.isAbsolute()) {
+                    targetIsRemote = true;
+                } else {
+                    targetIsRemote = false;
+                }
+            } catch (Exception ex) {
+                targetIsRemote = false;
+            }
+        }
+        return targetIsRemote;
+    }
+
+    private ReferenceBindingProvider getDistributedProvider() {
+
+        if (isTargetRemote()) {
+            // initialize the remote provider if it hasn't been done already
+            if (distributedProvider == null) {
+                if (reference.getInterfaceContract() != null && !reference.getInterfaceContract().getInterface().isRemotable()) {
+                    throw new IllegalStateException("Reference interface not remotable for component: " + component
+                        .getName()
+                        + " and reference: "
+                        + reference.getName());
+                }
+
+                if (distributedProviderFactory == null) {
+                    throw new IllegalStateException("No distributed SCA binding available for component: " + component
+                        .getName()
+                        + " and reference: "
+                        + reference.getName());
+                }
+
+                // create the remote provider
+                DistributedSCABinding distributedBinding = new DistributedSCABindingImpl();
+                distributedBinding.setSCABinding(binding);
+
+                distributedProvider =
+                    distributedProviderFactory.createReferenceBindingProvider(component, reference, distributedBinding);
+            }
+        }
+
+        return distributedProvider;
+    }
+
+    public InterfaceContract getBindingInterfaceContract() {
+        if (isTargetRemote()) {
+            return getDistributedProvider().getBindingInterfaceContract();
+        } else {
+            if (reference.getReference() != null) {
+                return reference.getReference().getInterfaceContract();
+            } else {
+                return reference.getInterfaceContract();
+            }
+        }
+    }
+
+    public boolean supportsOneWayInvocation() {
+        if (isTargetRemote()) {
+            return getDistributedProvider().supportsOneWayInvocation();
+        } else {
+            return false;
+        }
+    }
+
+    private Invoker getInvoker(RuntimeWire wire, Operation operation) {
+        EndpointReference target = wire.getTarget();
+        if (target != null) {
+            RuntimeComponentService service = (RuntimeComponentService)target.getContract();
+            if (service != null) { // not a callback wire
+                SCABinding scaBinding = service.getBinding(SCABinding.class);
+                InvocationChain chain =
+                    service.getInvocationChain(scaBinding, wire.getSource().getInterfaceContract(), operation);
+                return chain == null ? null : new SCABindingInvoker(chain);
+            }
+        }
+        return null;
+    }
+
+    public Invoker createInvoker(Operation operation) {
+        if (isTargetRemote()) {
+            return getDistributedProvider().createInvoker(operation);
+        } else {
+            RuntimeWire wire = reference.getRuntimeWire(binding);
+            Invoker invoker = getInvoker(wire, operation);
+            if (invoker == null) {
+                throw new ServiceUnavailableException("Unable to create SCA binding invoker for local target " + component.getName()
+                    + " reference "
+                    + reference.getName()
+                    + " (bindingURI="
+                    + binding.getURI()
+                    + " operation="
+                    + operation.getName()
+                    + ")" );
+            }
+            return invoker;
+        }
+    }
+
+    public void start() {
+        if (started) {
+            return;
+        } else {
+            started = true;
+        }
+
+        if (getDistributedProvider() != null) {
+            distributedProvider.start();
+        }
+    }
+
+    public void stop() {
+        if (!started) {
+            return;
+        } else {
+            started = false;
+        }
+
+        if (getDistributedProvider() != null) {
+            distributedProvider.stop();
+        }
+    }
+
+}
diff --git a/branches/sca-android/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/impl/RuntimeSCAServiceBindingProvider.java b/branches/sca-android/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/impl/RuntimeSCAServiceBindingProvider.java
new file mode 100644
index 0000000000..8994ba5381
--- /dev/null
+++ b/branches/sca-android/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/impl/RuntimeSCAServiceBindingProvider.java
@@ -0,0 +1,154 @@
+/*
+ * 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.binding.sca.impl;
+
+import java.net.URI;
+
+import org.apache.tuscany.sca.assembly.SCABinding;
+import org.apache.tuscany.sca.binding.sca.DistributedSCABinding;
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.interfacedef.InterfaceContract;
+import org.apache.tuscany.sca.provider.BindingProviderFactory;
+import org.apache.tuscany.sca.provider.ProviderFactoryExtensionPoint;
+import org.apache.tuscany.sca.provider.ServiceBindingProvider;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+import org.apache.tuscany.sca.runtime.RuntimeComponentService;
+
+/**
+ * The sca service binding provider mediates between the twin requirements of 
+ * local sca bindings and remote sca bindings. In the local case is does 
+ * very little. When the sca binding model is set as being remote this binding will 
+ * try and create a remote service endpoint for remote references to connect to 
+ * 
+ * @version $Rev$ $Date$
+ */
+public class RuntimeSCAServiceBindingProvider implements ServiceBindingProvider {
+  
+    private RuntimeComponentService service;
+    private BindingProviderFactory<DistributedSCABinding> distributedProviderFactory;
+    private ServiceBindingProvider distributedProvider;
+    private DistributedSCABinding distributedBinding;
+    
+    public RuntimeSCAServiceBindingProvider(ExtensionPointRegistry extensionPoints,
+                                            RuntimeComponent component,
+                                            RuntimeComponentService service,
+                                            SCABinding binding) {
+        this.service = service;
+        // if there is potentially a wire to this service that crosses the node boundary 
+        if (service.getInterfaceContract().getInterface().isRemotable()) {  
+            
+            // look to see if a distributed SCA binding implementation has
+            // been included on the classpath. This will be needed by the 
+            // provider itself to do it's thing
+            ProviderFactoryExtensionPoint factoryExtensionPoint =
+                extensionPoints.getExtensionPoint(ProviderFactoryExtensionPoint.class);
+            distributedProviderFactory =
+                (BindingProviderFactory<DistributedSCABinding>)factoryExtensionPoint
+                    .getProviderFactory(DistributedSCABinding.class);      
+            
+            // Check the things that will generally be required to set up a 
+            // distributed sca domain reference provider. I.e. make sure that we have a
+            // - distributed implementation of the sca binding available
+            // - remotable interface on the service
+            if (distributedProviderFactory != null) {
+                
+                URI serviceURI = null;
+                try {
+                    serviceURI = new URI(binding.getURI());
+                } catch(Exception ex) {
+                    
+                }
+                
+                if (RemoteBindingHelper.isTargetRemote() || ((serviceURI != null) && (serviceURI.isAbsolute()))) {          
+                    
+                    //  create a nested provider to handle the remote case
+                    distributedBinding = new DistributedSCABindingImpl();
+                    distributedBinding.setSCABinding(binding);
+                    
+                    distributedProvider = 
+                        distributedProviderFactory.createServiceBindingProvider(component, service, distributedBinding);
+                    
+                
+                } else {
+                     /* do nothing at the moment as only apps using the node implementation
+                      * will currently have the distributed domain set. 
+                      * 
+                    throw new IllegalStateException("No distributed domain available for component: "+
+                            component.getName() +
+                            " and service: " + 
+                            service.getName());
+                    */
+                }
+            } else {
+                /* do nothing at the moment as all services with remotable interfaces
+                 * are marked as remote
+                throw new IllegalStateException("No distributed SCA binding available for component: "+
+                        component.getName() +
+                        " and service: " + 
+                        service.getName());
+                */
+            }
+        } 
+    }
+
+    public InterfaceContract getBindingInterfaceContract() {
+        if (distributedProvider != null) {
+            return distributedProvider.getBindingInterfaceContract();
+        } else {
+            if (service.getService() != null) {
+                return service.getService().getInterfaceContract();
+            } else {
+                return service.getInterfaceContract();
+            }
+        }
+    }
+
+    public boolean supportsOneWayInvocation() {
+        return false;
+    }
+    
+    public void start() {
+        if (distributedProvider != null) {
+            distributedProvider.start();
+        }
+    }
+
+    public void stop() {
+        if (distributedProvider != null) {
+            distributedProvider.stop();
+        }
+        
+        if (distributedBinding != null) {
+            // reset the binding URI to null so that if the composite containing the component
+            // with the service/binding is restarted the binding will have the correct URI set
+            SCABinding scaBinding = distributedBinding.getSCABinding();
+            try {
+                URI tempURI = new URI(scaBinding.getURI());
+                if (!tempURI.isAbsolute()){
+                    scaBinding.setURI(null);
+                }
+            } catch (Exception ex){
+                scaBinding.setURI(null);
+            } 
+        }
+        
+    }
+
+}
diff --git a/branches/sca-android/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/impl/SCABindingFactoryImpl.java b/branches/sca-android/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/impl/SCABindingFactoryImpl.java
new file mode 100644
index 0000000000..ea758823a9
--- /dev/null
+++ b/branches/sca-android/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/impl/SCABindingFactoryImpl.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.binding.sca.impl;
+
+import org.apache.tuscany.sca.assembly.SCABinding;
+import org.apache.tuscany.sca.assembly.SCABindingFactory;
+
+/**
+ * A factory for the SCA binding model.
+ * 
+ * @version $Rev$ $Date$
+ */
+public class SCABindingFactoryImpl implements SCABindingFactory {
+    
+    public SCABindingFactoryImpl (){
+        
+    }
+
+    public SCABinding createSCABinding() {
+        return new SCABindingImpl();
+    }
+    
+}
diff --git a/branches/sca-android/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/impl/SCABindingImpl.java b/branches/sca-android/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/impl/SCABindingImpl.java
new file mode 100644
index 0000000000..c93ddd9503
--- /dev/null
+++ b/branches/sca-android/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/impl/SCABindingImpl.java
@@ -0,0 +1,223 @@
+/*
+ * 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.binding.sca.impl;
+
+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.ComponentService;
+import org.apache.tuscany.sca.assembly.Extensible;
+import org.apache.tuscany.sca.assembly.OptimizableBinding;
+import org.apache.tuscany.sca.assembly.SCABinding;
+import org.apache.tuscany.sca.assembly.builder.AutomaticBinding;
+import org.apache.tuscany.sca.policy.Intent;
+import org.apache.tuscany.sca.policy.IntentAttachPointType;
+import org.apache.tuscany.sca.policy.PolicySet;
+import org.apache.tuscany.sca.policy.PolicySetAttachPoint;
+
+/**
+ * The assembly mode object for an SCA binding.
+ * 
+ * @version $Rev$ $Date$
+ */
+public class SCABindingImpl implements SCABinding, Extensible, PolicySetAttachPoint, OptimizableBinding, AutomaticBinding {
+    private String name;
+    private String uri;
+    private List<Object> extensions = new ArrayList<Object>();
+    private List<Intent> requiredIntents = new ArrayList<Intent>();
+    private List<PolicySet> policySets = new ArrayList<PolicySet>();
+    private IntentAttachPointType intentAttachPointType;
+    
+    private Component targetComponent;
+    private ComponentService targetComponentService;
+    private Binding targetBinding;
+    private List<PolicySet> applicablePolicySets = new ArrayList<PolicySet>();
+    
+    private boolean isAutomatic = false;
+    
+    public List<PolicySet> getApplicablePolicySets() {
+        return applicablePolicySets;
+    }
+
+    /**
+     * Constructs a new SCA binding.
+     */
+    protected SCABindingImpl() {
+    }
+    
+    // SCA Binding operations
+    
+    /**
+     * Setters for the binding name. Defaults to the
+     * name of the service or reference with which the binding is
+     * associated
+     * 
+     * @return the binding name
+     */
+    public String getName() {
+        return name;
+    }
+    
+    /**
+     * Setter for the binding name
+     * 
+     * @param name the binding name
+     */
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    /**
+     * Getters for the binding URI. The computed URI for the 
+     * service that the reference is targeting or which the service represents
+     * depending on whether the biding is associated with a reference or
+     * service
+     * 
+     * @return the binding URI
+     */
+    public String getURI() {
+        return uri;
+    }
+
+    /**
+     * Setter for the binding URI
+     * 
+     * @param uri the binding URI
+     */
+    public void setURI(String uri) {
+        this.uri = uri;
+    }
+    
+    /**
+     * Returns a list of extension objects contained in this model object.
+     * 
+     * @return a list of extension objects container in this model object
+     */
+    public List<Object> getExtensions() {
+        return extensions;
+    }
+    
+    /**
+     * Returns true if the model element is unresolved.
+     * 
+     * @return true if the model element is unresolved.
+     */
+    public boolean isUnresolved() {
+        if (targetComponentService == null){
+            return true;
+        } else {
+            return targetComponentService.isUnresolved();
+        }
+    }
+    
+    /**
+     * Sets whether the model element is unresolved.
+     * 
+     * @param unresolved whether the model element is unresolved
+     */    
+    public void setUnresolved(boolean unresolved) {
+    }
+
+    /**
+     * @see java.lang.Object#clone()
+     */
+    @Override
+    public Object clone() throws CloneNotSupportedException {
+        return super.clone();
+    }
+    
+    public List<PolicySet> getPolicySets() {
+        return policySets;
+    }
+    
+    public List<Intent> getRequiredIntents() {
+        return requiredIntents;
+    }
+
+    public IntentAttachPointType getType() {
+        return intentAttachPointType;
+    }
+    
+    public void setType(IntentAttachPointType intentAttachPointType) {
+        this.intentAttachPointType = intentAttachPointType;
+    }
+    
+    // Wireable binding operations
+
+    /**
+     * @return the targetComponent
+     */
+    public Component getTargetComponent() {
+        return targetComponent;
+    }
+
+    /**
+     * @param targetComponent the targetComponent to set
+     */
+    public void setTargetComponent(Component targetComponent) {
+        this.targetComponent = targetComponent;
+    }
+
+    /**
+     * @return the targetComponentService
+     */
+    public ComponentService getTargetComponentService() {
+        return targetComponentService;
+    }
+
+    /**
+     * @param targetComponentService the targetComponentService to set
+     */
+    public void setTargetComponentService(ComponentService targetComponentService) {
+        this.targetComponentService = targetComponentService;
+    }
+
+    /**
+     * @return the targetBinding
+     */
+    public Binding getTargetBinding() {
+        return targetBinding;
+    }
+
+    /**
+     * @param targetBinding the targetBinding to set
+     */
+    public void setTargetBinding(Binding targetBinding) {
+        this.targetBinding = targetBinding;
+    }
+    
+    public void setPolicySets(List<PolicySet> policySets) {
+        this.policySets = policySets; 
+    }
+
+    public void setRequiredIntents(List<Intent> intents) {
+        this.requiredIntents = intents;
+    }
+    
+
+    public void setIsAutomatic(boolean isAutomatic){
+        this.isAutomatic = isAutomatic;
+    }
+    
+    public boolean getIsAutomatic(){
+        return this.isAutomatic;
+    }
+}
diff --git a/branches/sca-android/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/impl/SCABindingInvoker.java b/branches/sca-android/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/impl/SCABindingInvoker.java
new file mode 100644
index 0000000000..52c0f64fe5
--- /dev/null
+++ b/branches/sca-android/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/impl/SCABindingInvoker.java
@@ -0,0 +1,71 @@
+/*
+ * 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.binding.sca.impl;
+
+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;
+import org.apache.tuscany.sca.invocation.DataExchangeSemantics;
+
+/**
+ * @version $Rev$ $Date$
+ */
+public class SCABindingInvoker implements Interceptor, DataExchangeSemantics {
+    private InvocationChain chain;
+    
+    /**
+     * Construct a SCABindingInvoker that delegates to the service invocaiton chain
+     * @param chain
+     */
+    public SCABindingInvoker(InvocationChain chain) {
+        super();
+        this.chain = chain;
+    }
+
+    /**
+     * @see org.apache.tuscany.sca.invocation.Interceptor#getNext()
+     */
+    public Invoker getNext() {
+        return chain.getHeadInvoker();
+    }
+
+    /**
+     * @see org.apache.tuscany.sca.invocation.Interceptor#setNext(org.apache.tuscany.sca.invocation.Invoker)
+     */
+    public void setNext(Invoker next) {
+        // NOOP
+    }
+
+    /**
+     * @see org.apache.tuscany.sca.invocation.Invoker#invoke(org.apache.tuscany.sca.invocation.Message)
+     */
+    public Message invoke(Message msg) {
+        return getNext().invoke(msg);
+    }
+
+    /**
+     * @see org.apache.tuscany.sca.invocation.DataExchangeSemantics#allowsPassByReference()
+     */
+    public boolean allowsPassByReference() {
+        return chain.allowsPassByReference();
+    }
+
+}