1 files changed, 124 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/1.6-TUSCANY-3909/core/src/main/java/org/apache/tuscany/sca/core/invocation/JDKCallbackInvocationHandler.java b/sca-java-1.x/tags/1.6-TUSCANY-3909/core/src/main/java/org/apache/tuscany/sca/core/invocation/JDKCallbackInvocationHandler.java
new file mode 100644
index 0000000000..62e8b4d3ee
--- /dev/null
+++ b/sca-java-1.x/tags/1.6-TUSCANY-3909/core/src/main/java/org/apache/tuscany/sca/core/invocation/JDKCallbackInvocationHandler.java
@@ -0,0 +1,124 @@
+/*
+ * 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.invocation;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+import org.apache.tuscany.sca.core.assembly.RuntimeWireImpl;
+import org.apache.tuscany.sca.core.context.CallableReferenceImpl;
+import org.apache.tuscany.sca.core.conversation.ConversationState;
+import org.apache.tuscany.sca.core.scope.TargetResolutionException;
+import org.apache.tuscany.sca.invocation.InvocationChain;
+import org.apache.tuscany.sca.invocation.Message;
+import org.apache.tuscany.sca.invocation.MessageFactory;
+import org.apache.tuscany.sca.runtime.ReferenceParameters;
+import org.apache.tuscany.sca.runtime.RuntimeWire;
+import org.osoa.sca.NoRegisteredCallbackException;
+import org.osoa.sca.ServiceRuntimeException;
+
+/**
+ * Responsible for dispatching to a callback through a wire. <p/> TODO cache
+ * target invoker
+ * 
+ * @version $Rev$ $Date$
+ */
+public class JDKCallbackInvocationHandler extends JDKInvocationHandler {
+    private static final long serialVersionUID = -3350283555825935609L;
+
+    public JDKCallbackInvocationHandler(MessageFactory messageFactory, CallbackReferenceImpl ref) {
+        super(messageFactory, ref);
+        this.fixedWire = false;
+    }
+
+    @Override
+    @SuppressWarnings( {"unchecked"})
+    public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
+        if (Object.class == method.getDeclaringClass()) {
+            return invokeObjectMethod(method, args);
+        }
+
+        // obtain a dedicated wire to be used for this callback invocation
+        RuntimeWire wire = ((CallbackReferenceImpl)callableReference).getCallbackWire();
+        if (wire == null) {
+            //FIXME: need better exception
+            throw new ServiceRuntimeException("No callback wire found");
+        }
+
+        // set the conversational state based on the interface that
+        // is specified for the reference that this wire belongs to
+        initConversational(wire);
+
+        // set the conversation id into the conversation object. This is
+        // a special case for callbacks as, unless otherwise set manually,
+        // the callback should use the same conversation id as was received
+        // on the incoming call to this component
+        if (conversational) {
+
+            if (conversation == null || conversation.getState() == ConversationState.ENDED) {
+                conversation = null;
+            }
+            Object convID = conversation == null ? null : conversation.getConversationID();
+
+            // create a conversation id if one doesn't exist 
+            // already, i.e. the conversation is just starting
+            if (convID == null) {
+                convID = ((CallbackReferenceImpl)callableReference).getConvID();
+                if (convID != null) {
+                    conversation = ((RuntimeWireImpl)wire).getConversationManager().getConversation(convID);
+                    if (callableReference != null) {
+                        ((CallableReferenceImpl)callableReference).attachConversation(conversation);
+                    }
+                }
+            }
+        }
+
+        setEndpoint(((CallbackReferenceImpl)callableReference).getResolvedEndpoint());
+
+        InvocationChain chain = getInvocationChain(method, wire);
+        if (chain == null) {
+            throw new IllegalArgumentException("No matching operation is found: " + method);
+        }
+
+        try {
+            return invoke(chain, args, wire, wire.getSource());
+        } catch (InvocationTargetException e) {
+            Throwable t = e.getCause();
+            if (t instanceof NoRegisteredCallbackException) {
+                throw t;
+            }
+            throw e;
+        } finally {
+            // allow the cloned wire to be reused by subsequent callbacks
+            ((RuntimeWireImpl)wire).releaseWire();
+        }
+    }
+    
+    /**
+     * 
+     */
+    @Override
+    protected void handleCallback(Message msg, RuntimeWire wire, Object currentConversationID)
+        throws TargetResolutionException {
+        ReferenceParameters parameters = msg.getFrom().getReferenceParameters();
+        parameters.setCallbackID(getCallbackID());
+    }
+
+
+}