1 files changed, 127 insertions, 0 deletions
diff --git a/sca-java-2.x/trunk/modules/binding-sca-runtime/src/main/java/org/apache/tuscany/sca/binding/local/LocalSCAReferenceBindingProvider.java b/sca-java-2.x/trunk/modules/binding-sca-runtime/src/main/java/org/apache/tuscany/sca/binding/local/LocalSCAReferenceBindingProvider.java
new file mode 100644
index 0000000000..f04b6aeb4c
--- /dev/null
+++ b/sca-java-2.x/trunk/modules/binding-sca-runtime/src/main/java/org/apache/tuscany/sca/binding/local/LocalSCAReferenceBindingProvider.java
@@ -0,0 +1,127 @@
+package org.apache.tuscany.sca.binding.local;
+
+import org.apache.tuscany.sca.assembly.Endpoint;
+import org.apache.tuscany.sca.assembly.Reference;
+import org.apache.tuscany.sca.binding.local.LocalSCABindingInvoker;
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.core.UtilityExtensionPoint;
+import org.apache.tuscany.sca.databinding.Mediator;
+import org.apache.tuscany.sca.interfacedef.Compatibility;
+import org.apache.tuscany.sca.interfacedef.InterfaceContract;
+import org.apache.tuscany.sca.interfacedef.InterfaceContractMapper;
+import org.apache.tuscany.sca.interfacedef.Operation;
+import org.apache.tuscany.sca.invocation.InvocationChain;
+import org.apache.tuscany.sca.invocation.Invoker;
+import org.apache.tuscany.sca.provider.EndpointReferenceAsyncProvider;
+import org.apache.tuscany.sca.provider.SCABindingMapper;
+import org.apache.tuscany.sca.runtime.RuntimeComponentService;
+import org.apache.tuscany.sca.runtime.RuntimeEndpoint;
+import org.apache.tuscany.sca.runtime.RuntimeEndpointReference;
+import org.oasisopen.sca.ServiceUnavailableException;
+
+public class LocalSCAReferenceBindingProvider implements EndpointReferenceAsyncProvider {
+    private RuntimeEndpointReference endpointReference;
+
+    private InterfaceContractMapper interfaceContractMapper;
+    private ExtensionPointRegistry extensionPoints;
+    private Mediator mediator;
+
+    public LocalSCAReferenceBindingProvider(ExtensionPointRegistry extensionPoints, RuntimeEndpointReference endpointReference, SCABindingMapper mapper) {
+        this.extensionPoints = extensionPoints;
+        UtilityExtensionPoint utilities = extensionPoints.getExtensionPoint(UtilityExtensionPoint.class);
+        this.interfaceContractMapper = utilities.getUtility(InterfaceContractMapper.class);
+        this.mediator = utilities.getUtility(Mediator.class);
+
+        this.endpointReference = endpointReference;
+    }
+
+    @Override
+    public InterfaceContract getBindingInterfaceContract() {
+        RuntimeEndpoint endpoint = (RuntimeEndpoint) endpointReference.getTargetEndpoint();
+        if (endpoint != null) {
+            return endpoint.getComponentTypeServiceInterfaceContract();
+        } else {
+            return endpointReference.getComponentTypeReferenceInterfaceContract();
+        }
+    }
+
+    @Override
+    public Invoker createInvoker(Operation operation) {
+        Invoker result = null;
+
+        Endpoint target = endpointReference.getTargetEndpoint();
+        if (target != null) {
+            RuntimeComponentService service = (RuntimeComponentService) target.getService();
+            if (service != null) { // not a callback wire
+                InvocationChain chain = ((RuntimeEndpoint) target).getInvocationChain(operation);
+
+                boolean passByValue = false;
+                Operation targetOp = chain.getTargetOperation();
+                if (!operation.getInterface().isRemotable()) {
+                    if (interfaceContractMapper.isCompatibleByReference(operation, targetOp, Compatibility.SUBSET)) {
+                        passByValue = false;
+                    }
+                } else {
+                    Reference ref = endpointReference.getReference().getReference();
+                    // The spec says both ref and service needs to
+                    // allowsPassByReference
+                    boolean allowsPBR = (endpointReference.getReference().isAllowsPassByReference() || (ref != null && ref.isAllowsPassByReference())) && chain.allowsPassByReference();
+
+                    if (allowsPBR && interfaceContractMapper.isCompatibleByReference(operation, targetOp, Compatibility.SUBSET)) {
+                        passByValue = false;
+                    } else if (interfaceContractMapper.isCompatibleWithoutUnwrapByValue(operation, targetOp, Compatibility.SUBSET)) {
+                        passByValue = true;
+                    }
+                }
+                // it turns out that the chain source and target operations are
+                // the same, and are the operation
+                // from the target, not sure if thats by design or a bug. The
+                // SCA binding invoker needs to know
+                // the source and target class loaders so pass in the real
+                // source operation in the constructor
+                result = chain == null ? null : new LocalSCABindingInvoker(chain, operation, mediator, passByValue, endpointReference, extensionPoints);
+            }
+        }
+
+        if (result == null) {
+            throw new ServiceUnavailableException("Unable to create SCA binding invoker for local target " + endpointReference.getComponent().getName() + " reference "
+                    + endpointReference.getReference().getName() + " (bindingURI=" + endpointReference.getBinding().getURI() + " operation=" + operation.getName() + ")");
+        }
+
+        return result;
+    }
+
+    @Override
+    public boolean supportsOneWayInvocation() {
+        // Default for Local invocation
+        return false;
+    }
+    
+    @Override
+    public boolean supportsNativeAsync() {
+        return true;
+    }
+
+    @Override
+    public void configure() {
+        // Nothing required for Local invocation
+    }
+
+    @Override
+    public void start() {
+        // Nothing required for Local invocation
+    }
+
+    @Override
+    public void stop() {
+        // Nothing required for Local invocation
+    }
+    
+    /**
+     * Allows us to replace the delegate EPR with the real EPR so that the local binding
+     * optimization operates against the correct invocation chains.
+     */
+    public void setEndpointReference(RuntimeEndpointReference endpointReference){
+        this.endpointReference = endpointReference;
+    }
+}