1 files changed, 268 insertions, 0 deletions
diff --git a/tags/java/sca/2.0-M4-RC1/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/RuntimeWireInvoker.java b/tags/java/sca/2.0-M4-RC1/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/RuntimeWireInvoker.java
new file mode 100644
index 0000000000..43726b85dd
--- /dev/null
+++ b/tags/java/sca/2.0-M4-RC1/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/RuntimeWireInvoker.java
@@ -0,0 +1,268 @@
+/*
+ * 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 org.apache.tuscany.sca.assembly.EndpointReference;
+import org.apache.tuscany.sca.context.ThreadMessageContext;
+import org.apache.tuscany.sca.core.factory.InstanceWrapper;
+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.invocation.Message;
+import org.apache.tuscany.sca.invocation.MessageFactory;
+import org.apache.tuscany.sca.runtime.RuntimeWire;
+import org.oasisopen.sca.ServiceRuntimeException;
+
+/**
+ * @version $Rev$ $Date$
+ */
+public class RuntimeWireInvoker implements Invoker{
+    protected MessageFactory messageFactory;
+    protected Object conversationID;
+    protected Object callbackID;
+    protected Object callbackObject;
+    protected RuntimeWire wire;
+
+    public RuntimeWireInvoker(MessageFactory messageFactory, RuntimeWire wire) {
+        this.messageFactory = messageFactory;
+        this.wire = wire;
+        //init(wire);
+    }
+
+    /* TODO - EPR - not required for OASIS
+    protected void init(RuntimeWire wire) {
+        if (wire != null) {
+            
+            ReferenceParameters parameters = wire.getSource().getReferenceParameters();
+            this.callbackID = parameters.getCallbackID();
+            this.callbackObject = parameters.getCallbackReference();
+            this.conversationID = parameters.getConversationID();
+            InterfaceContract contract = wire.getSource().getInterfaceContract();
+            this.conversational = contract.getInterface().isConversational();
+        }
+    }
+    */
+    
+    /*
+     * TODO - Introduced to allow the RuntimeWireInvoker to sit on the end of the 
+     *        service binding chain. Runtime wire invoke needs splitting up into 
+     *        separate conversation, callback interceptors etc.
+     */
+    public Message invoke(Message msg) {
+                
+        try {
+            Object response = invoke(msg.getOperation(),msg);
+            // Hack to put the response back in a message. 
+            // shouldn't take it out of the response message in the first place
+            msg.setBody(response);
+        } catch (InvocationTargetException e) {
+//            throw new ServiceRuntimeException(e);
+        }
+        
+        return msg;
+    }
+
+    public Object invoke(Operation operation, Message msg) throws InvocationTargetException {
+        return invoke(wire, operation, msg);
+    }
+
+    public Object invoke(RuntimeWire wire, Operation operation, Message msg) throws InvocationTargetException {
+        RuntimeWire runtimeWire = wire == null ? this.wire : wire;
+        InvocationChain chain = runtimeWire.getInvocationChain(operation);
+        return invoke(chain, msg, runtimeWire);
+    }
+
+    protected Object invoke(InvocationChain chain, Message msg, RuntimeWire wire) throws InvocationTargetException {
+        EndpointReference from = msg.getFrom();
+        EndpointReference epFrom = wire.getEndpointReference();
+        if (from != null) {
+            from.setComponent(epFrom.getComponent());
+            from.setReference(epFrom.getReference());
+            from.setBinding(epFrom.getBinding());
+            from.setInterfaceContract(epFrom.getInterfaceContract());
+            from.setTargetEndpoint(epFrom.getTargetEndpoint());
+            //from.setCallbackEndpoint(epFrom.getCallbackEndpoint());
+
+            // TODO - EPR - what's going on here?
+            //from.mergeEndpoint(epFrom);
+        } else {
+            msg.setFrom(epFrom);
+        }
+        msg.setTo(wire.getEndpoint());
+
+        Invoker headInvoker = chain.getHeadInvoker();
+        Operation operation = chain.getTargetOperation();
+        msg.setOperation(operation);
+
+        Message msgContext = ThreadMessageContext.getMessageContext();
+        // TODO - EPR - no required for OASIS
+        //Object currentConversationID = msgContext.getFrom().getReferenceParameters().getConversationID();
+
+        ThreadMessageContext.setMessageContext(msg);
+        try {
+            // TODO - EPR - no required for OASIS
+            //conversationPreinvoke(msg);
+            // handleCallback(msg, currentConversationID);
+            // dispatch the wire down the chain and get the response
+            Message resp = headInvoker.invoke(msg);
+            Object body = resp.getBody();
+            if (resp.isFault()) {
+                throw new InvocationTargetException((Throwable)body);
+            }
+            return body;
+        } catch (InvocationTargetException e) {
+            throw e;
+        } catch (Throwable e) {
+            throw new ServiceRuntimeException(e);
+        } finally {
+            try {
+                // TODO - EPR - no required for OASIS
+                //conversationPostInvoke(msg);
+            //} catch (TargetDestructionException e) {
+            //    throw new ServiceRuntimeException(e);
+            } finally {
+                ThreadMessageContext.setMessageContext(msgContext);
+            }
+        }
+    }
+
+    /**
+     * @param msgContext
+     */
+   /* TODO - EPR - no required for OASIS
+    protected EndpointReference getCallbackEndpoint(Message msgContext) {
+        EndpointReference from = msgContext.getFrom();
+        return from == null ? null : from.getReferenceParameters().getCallbackReference();
+    }
+    */
+
+    /**
+     * Pre-invoke for the conversation handling
+     * @param msg
+     * @throws TargetResolutionException
+     */
+    /* TODO - EPR - no required for OASIS    
+    private void conversationPreinvoke(Message msg) {
+        if (conversational) {
+            ReferenceParameters parameters = msg.getFrom().getReferenceParameters();
+            // in some cases the ConversationID that should be used comes in with the 
+            // message, e.g. when ws binding is in use.
+            Object convID = parameters.getConversationID();
+            if (convID != null) {
+                conversationID = convID;
+            }
+            conversation = conversationManager.getConversation(conversationID);
+            
+            if (conversation == null || conversation.getState() == ConversationState.ENDED) {
+                conversation = conversationManager.startConversation(conversationID);
+                conversation.initializeConversationAttributes(wire.getTarget().getComponent());
+            } else if (conversation.conversationalAttributesInitialized() == false) {
+                conversation.initializeConversationAttributes(wire.getTarget().getComponent());
+            } else if (conversation.isExpired()){
+            	throw new ConversationEndedException("Conversation has expired.");
+            }
+            
+            conversation.updateLastReferencedTime();
+    
+            parameters.setConversationID(conversation.getConversationID());
+        }
+    }
+    */
+
+    /**
+     * Post-invoke for the conversation handling
+     * @param wire
+     * @param operation
+     * @throws TargetDestructionException
+     */
+    /* TODO - EPR - no required for OASIS
+    @SuppressWarnings("unchecked")
+    private void conversationPostInvoke(Message msg) throws TargetDestructionException {
+        if (conversational) {       
+            Operation operation = msg.getOperation();
+            ConversationSequence sequence = operation.getConversationSequence();
+            if (sequence == ConversationSequence.CONVERSATION_END) {
+                // in some cases the ConversationID that should be used comes in with the 
+                // message, e.g. when ws binding is in use. 
+                Object convID = msg.getFrom().getReferenceParameters().getConversationID();
+                if (convID != null) {
+                    conversationID = convID;
+                }
+                conversation = conversationManager.getConversation(conversationID);            
+    
+                // remove conversation id from scope container
+                ScopeContainer scopeContainer = getConversationalScopeContainer(msg);
+    
+                if (scopeContainer != null) {
+                    scopeContainer.remove(conversation.getConversationID());
+                }
+                
+                conversation.end();
+            }
+        }
+    }
+
+    @SuppressWarnings("unchecked")
+    private ScopeContainer getConversationalScopeContainer(Message msg) {
+        ScopeContainer scopeContainer = null;
+
+        RuntimeComponent component = (RuntimeComponent) msg.getTo().getComponent();
+
+        if (component instanceof ScopedRuntimeComponent) {
+            ScopedRuntimeComponent scopedRuntimeComponent = (ScopedRuntimeComponent)component;
+            ScopeContainer container = scopedRuntimeComponent.getScopeContainer();
+
+            if ((container != null) && (container.getScope() == Scope.CONVERSATION)) {
+                scopeContainer = container;
+            }
+        }
+
+        return scopeContainer;
+    }
+    */
+
+
+    /**
+     * Minimal wrapper for a callback object contained in a ServiceReference
+     */
+    private static class CallbackObjectWrapper<T> implements InstanceWrapper<T> {
+
+        private T instance;
+
+        private CallbackObjectWrapper(T instance) {
+            this.instance = instance;
+        }
+
+        public T getInstance() {
+            return instance;
+        }
+
+        public void start() {
+            // do nothing
+        }
+
+        public void stop() {
+            // do nothing
+        }
+    }
+
+}