1 files changed, 125 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/implementation-java-runtime/src/main/java/org/apache/tuscany/sca/implementation/java/invocation/JavaCallbackRuntimeWireProcessor.java b/sca-java-2.x/tags/2.0.1-RC1/modules/implementation-java-runtime/src/main/java/org/apache/tuscany/sca/implementation/java/invocation/JavaCallbackRuntimeWireProcessor.java
new file mode 100644
index 0000000000..6cd16202ba
--- /dev/null
+++ b/sca-java-2.x/tags/2.0.1-RC1/modules/implementation-java-runtime/src/main/java/org/apache/tuscany/sca/implementation/java/invocation/JavaCallbackRuntimeWireProcessor.java
@@ -0,0 +1,125 @@
+/*
+ * 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.implementation.java.invocation;
+
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import org.apache.tuscany.sca.assembly.Contract;
+import org.apache.tuscany.sca.assembly.Endpoint;
+import org.apache.tuscany.sca.assembly.Implementation;
+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.invocation.CallbackInterfaceInterceptor;
+import org.apache.tuscany.sca.implementation.java.JavaImplementation;
+import org.apache.tuscany.sca.interfacedef.Interface;
+import org.apache.tuscany.sca.interfacedef.InterfaceContractMapper;
+import org.apache.tuscany.sca.interfacedef.InvalidInterfaceException;
+import org.apache.tuscany.sca.interfacedef.java.JavaInterface;
+import org.apache.tuscany.sca.interfacedef.java.JavaInterfaceFactory;
+import org.apache.tuscany.sca.invocation.InvocationChain;
+import org.apache.tuscany.sca.invocation.Phase;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+import org.apache.tuscany.sca.runtime.RuntimeComponentReference;
+import org.apache.tuscany.sca.runtime.RuntimeEndpoint;
+import org.apache.tuscany.sca.runtime.RuntimeEndpointReference;
+import org.apache.tuscany.sca.runtime.RuntimeWireProcessor;
+
+/**
+ * @version $Rev$ $Date$
+ */
+public class JavaCallbackRuntimeWireProcessor implements RuntimeWireProcessor {
+    private static final Logger logger = Logger.getLogger(JavaCallbackRuntimeWireProcessor.class.getName());
+    private InterfaceContractMapper interfaceContractMapper;
+    private JavaInterfaceFactory javaInterfaceFactory;
+
+    public JavaCallbackRuntimeWireProcessor(ExtensionPointRegistry registry) {
+        FactoryExtensionPoint factories = registry.getExtensionPoint(FactoryExtensionPoint.class);
+        this.javaInterfaceFactory = factories.getFactory(JavaInterfaceFactory.class);
+
+        UtilityExtensionPoint utilities = registry.getExtensionPoint(UtilityExtensionPoint.class);
+        this.interfaceContractMapper = utilities.getUtility(InterfaceContractMapper.class);
+    }
+    
+    /**
+     * @param interfaceContractMapper
+     * @param javaInterfaceFactory
+     */
+    protected JavaCallbackRuntimeWireProcessor(InterfaceContractMapper interfaceContractMapper,
+                                            JavaInterfaceFactory javaInterfaceFactory) {
+        super();
+        this.interfaceContractMapper = interfaceContractMapper;
+        this.javaInterfaceFactory = javaInterfaceFactory;
+    }
+
+
+    private boolean supportsCallbackInterface(Interface iface, JavaImplementation impl) {
+        if (iface instanceof JavaInterface) {
+            Class<?> ifaceClass = ((JavaInterface)iface).getJavaClass();
+            if (ifaceClass.isAssignableFrom(impl.getJavaClass())) {
+                return true;
+            }
+        }
+        try {
+            Interface implType = javaInterfaceFactory.createJavaInterface(impl.getJavaClass());
+            // Ignore the remotable/conversational testing
+            implType.setRemotable(iface.isRemotable());
+            return interfaceContractMapper.isCompatibleSubset(iface, implType);
+        } catch (InvalidInterfaceException e) {
+            logger.log(Level.WARNING, e.getMessage(), e);
+            return false;
+        }
+    }
+
+    public void process(RuntimeEndpoint endpoint) {
+        // No operation
+    }
+
+    public void process(RuntimeEndpointReference endpointReference) {
+        if(!(endpointReference instanceof RuntimeEndpointReference)) {
+            return;
+        }
+        RuntimeEndpointReference epr = (RuntimeEndpointReference) endpointReference;
+        Contract contract = epr.getReference();
+        if (!(contract instanceof RuntimeComponentReference)) {
+            return;
+        }
+        RuntimeComponent component = (RuntimeComponent) epr.getComponent();
+        if (component == null) {
+            return;
+        }
+        Implementation implementation = component.getImplementation();
+        if (!(implementation instanceof JavaImplementation)) {
+            return;
+        }
+        JavaImplementation javaImpl = (JavaImplementation)implementation;
+        Endpoint callbackEndpoint = epr.getCallbackEndpoint();
+        if (callbackEndpoint != null) {
+            Interface iface = callbackEndpoint.getService().getInterfaceContract().getInterface();
+            if (!supportsCallbackInterface(iface, javaImpl)) {
+                // callback to this impl is not possible, so ensure a callback object is set
+                for (InvocationChain chain : epr.getInvocationChains()) {
+                    chain.addInterceptor(Phase.REFERENCE, new CallbackInterfaceInterceptor());
+                }
+            }
+        }
+    }
+}