1 files changed, 107 insertions, 0 deletions
diff --git a/sca-java-1.x/branches/sca-java-0.99/modules/implementation-java-runtime/src/main/java/org/apache/tuscany/sca/implementation/java/invocation/JavaImplementationInvoker.java b/sca-java-1.x/branches/sca-java-0.99/modules/implementation-java-runtime/src/main/java/org/apache/tuscany/sca/implementation/java/invocation/JavaImplementationInvoker.java
new file mode 100644
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+++ b/sca-java-1.x/branches/sca-java-0.99/modules/implementation-java-runtime/src/main/java/org/apache/tuscany/sca/implementation/java/invocation/JavaImplementationInvoker.java
@@ -0,0 +1,107 @@
+/*
+ * 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.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+import org.apache.tuscany.sca.core.context.InstanceWrapper;
+import org.apache.tuscany.sca.core.invocation.ThreadMessageContext;
+import org.apache.tuscany.sca.core.scope.ScopeContainer;
+import org.apache.tuscany.sca.core.scope.ScopedRuntimeComponent;
+import org.apache.tuscany.sca.core.scope.TargetResolutionException;
+import org.apache.tuscany.sca.interfacedef.ConversationSequence;
+import org.apache.tuscany.sca.invocation.Invoker;
+import org.apache.tuscany.sca.invocation.Message;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+
+/**
+ * Responsible for synchronously dispatching an invocation to a Java component
+ * implementation instance
+ * 
+ * @version $Rev$ $Date$
+ */
+public class JavaImplementationInvoker implements Invoker {
+    private Method method;
+
+    private final ScopeContainer scopeContainer;
+
+    public JavaImplementationInvoker(Method method, RuntimeComponent component) {
+        assert method != null : "Operation method cannot be null";
+        this.method = method;
+        this.scopeContainer = ((ScopedRuntimeComponent) component).getScopeContainer();
+    }
+
+    /**
+     * Resolves the target service instance or returns a cached one
+     */
+    @SuppressWarnings("unchecked")
+    private InstanceWrapper getInstance(ConversationSequence sequence, Object contextId)
+        throws TargetResolutionException, InvalidConversationSequenceException {
+        if (sequence == null) {
+            return scopeContainer.getWrapper(contextId);
+        } else {
+            switch (sequence) {
+                case CONVERSATION_START:
+                    return scopeContainer.getWrapper(contextId);
+                case CONVERSATION_CONTINUE:
+                case CONVERSATION_END:
+                    return scopeContainer.getAssociatedWrapper(contextId);
+                default:
+                    throw new InvalidConversationSequenceException("Unknown sequence type: " + String.valueOf(sequence));
+            }
+        }
+    }
+
+    public Message invoke(Message msg) {
+        Object messageId = msg.getMessageID();
+        if (messageId != null) {
+            Message workContext = ThreadMessageContext.getMessageContext();
+            workContext.setCorrelationID(messageId);
+        }
+
+        ConversationSequence sequence = msg.getConversationSequence();
+        Object payload = msg.getBody();
+        
+        // FIXME: How to deal with other scopes
+        Object contextId = ThreadMessageContext.getMessageContext().getConversationID();
+        try {
+            InstanceWrapper wrapper = getInstance(sequence, contextId);
+            Object instance = wrapper.getInstance();
+            Object ret;
+            if (payload != null && !payload.getClass().isArray()) {
+                ret = method.invoke(instance, payload);
+            } else {
+                ret = method.invoke(instance, (Object[])payload);
+            }
+            scopeContainer.returnWrapper(wrapper, contextId);
+            if (sequence == ConversationSequence.CONVERSATION_END) {
+                // if end conversation, remove resource
+                scopeContainer.remove(contextId);
+            }
+            msg.setBody(ret);
+        } catch (InvocationTargetException e) {
+            msg.setFaultBody(e.getCause());
+        } catch (Exception e) {
+            msg.setFaultBody(e);
+        }
+        return msg;
+    }
+
+}