1 files changed, 123 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/wire/DataBindingRuntimeWireProcessor.java b/sca-java-2.x/tags/2.0.1-RC1/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/wire/DataBindingRuntimeWireProcessor.java
new file mode 100644
index 0000000000..29a4551a5a
--- /dev/null
+++ b/sca-java-2.x/tags/2.0.1-RC1/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/wire/DataBindingRuntimeWireProcessor.java
@@ -0,0 +1,123 @@
+/*
+ * 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.databinding.wire;
+
+import java.util.List;
+
+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.databinding.util.OperationDataBindingHelper;
+import org.apache.tuscany.sca.interfacedef.InterfaceContract;
+import org.apache.tuscany.sca.interfacedef.Operation;
+import org.apache.tuscany.sca.invocation.Interceptor;
+import org.apache.tuscany.sca.invocation.InvocationChain;
+import org.apache.tuscany.sca.invocation.Phase;
+import org.apache.tuscany.sca.runtime.RuntimeEndpoint;
+import org.apache.tuscany.sca.runtime.RuntimeEndpointReference;
+import org.apache.tuscany.sca.runtime.RuntimeWireProcessor;
+
+/**
+ * This processor is responsible to add an interceptor to invocation chain if
+ * the source and target operations have different databinding requirements
+ *
+ * @version $Rev$ $Date$
+ */
+public class DataBindingRuntimeWireProcessor implements RuntimeWireProcessor {
+    private Mediator mediator;
+    
+    public DataBindingRuntimeWireProcessor(ExtensionPointRegistry registry) {
+        super();
+        this.mediator = registry.getExtensionPoint(UtilityExtensionPoint.class).getUtility(Mediator.class);
+    }
+
+    public void process(RuntimeEndpoint endpoint) {
+        InterfaceContract sourceContract = endpoint.getBindingInterfaceContract();
+        InterfaceContract targetContract = endpoint.getComponentTypeServiceInterfaceContract();
+        if (targetContract == null) {
+            targetContract = sourceContract;
+        }
+
+        if (!sourceContract.getInterface().isRemotable()) {
+            return;
+        }
+        List<InvocationChain> chains = endpoint.getInvocationChains();
+        for (InvocationChain chain : chains) {
+            Operation sourceOperation = chain.getSourceOperation();
+            Operation targetOperation = chain.getTargetOperation();
+
+            Interceptor interceptor = null;
+            if (isTransformationRequired(sourceContract, sourceOperation, targetContract, targetOperation)) {
+                // Add the interceptor to the source side because multiple
+                // references can be wired to the same service
+                interceptor = new DataTransformationInterceptor(endpoint, sourceOperation, targetOperation, mediator);
+            }
+            if (interceptor != null) {
+                String phase = Phase.SERVICE_INTERFACE;
+                chain.addInterceptor(phase, interceptor);
+            }
+        }
+
+    }
+
+    public void process(RuntimeEndpointReference endpointReference) {
+        InterfaceContract sourceContract = endpointReference.getComponentTypeReferenceInterfaceContract();
+        InterfaceContract targetContract = endpointReference.getBindingInterfaceContract();
+        if (targetContract == null) {
+            targetContract = sourceContract;
+        }
+
+        if (sourceContract == null || !sourceContract.getInterface().isRemotable()) {
+            return;
+        }
+        List<InvocationChain> chains = endpointReference.getInvocationChains();
+        for (InvocationChain chain : chains) {
+            Operation sourceOperation = chain.getSourceOperation();
+            Operation targetOperation = chain.getTargetOperation();
+
+            Interceptor interceptor = null;
+            if (isTransformationRequired(sourceContract, sourceOperation, targetContract, targetOperation)) {
+                // Add the interceptor to the source side because multiple
+                // references can be wired to the same service
+                interceptor = new DataTransformationInterceptor(endpointReference, sourceOperation, targetOperation, mediator);
+            }
+            if (interceptor != null) {
+                String phase = Phase.REFERENCE_INTERFACE;
+                chain.addInterceptor(phase, interceptor);
+            }
+        }
+        
+    }
+    
+
+    private boolean isTransformationRequired(InterfaceContract sourceContract,
+                                             Operation sourceOperation,
+                                             InterfaceContract targetContract,
+                                             Operation targetOperation) {
+        if (targetContract == null) {
+            targetContract = sourceContract;
+        }
+        if (sourceContract == targetContract) {
+            return false;
+        }
+        return OperationDataBindingHelper.isTransformationRequired(sourceOperation, targetOperation);
+    }
+
+}