1 files changed, 99 insertions, 0 deletions
diff --git a/tags/java/sca/1.5.1-RC1/modules/extension-helper/src/main/java/org/apache/tuscany/sca/extension/helper/impl/ImplementationImplementationProvider.java b/tags/java/sca/1.5.1-RC1/modules/extension-helper/src/main/java/org/apache/tuscany/sca/extension/helper/impl/ImplementationImplementationProvider.java
new file mode 100644
index 0000000000..f7c65acb3d
--- /dev/null
+++ b/tags/java/sca/1.5.1-RC1/modules/extension-helper/src/main/java/org/apache/tuscany/sca/extension/helper/impl/ImplementationImplementationProvider.java
@@ -0,0 +1,99 @@
+/*
+ * 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.extension.helper.impl;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.tuscany.sca.assembly.Implementation;
+import org.apache.tuscany.sca.extension.helper.ImplementationActivator;
+import org.apache.tuscany.sca.extension.helper.InvokerFactory;
+import org.apache.tuscany.sca.interfacedef.Operation;
+import org.apache.tuscany.sca.invocation.Invoker;
+import org.apache.tuscany.sca.invocation.Message;
+import org.apache.tuscany.sca.provider.ImplementationProvider;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+import org.apache.tuscany.sca.runtime.RuntimeComponentService;
+
+/**
+ * The ImplementationProvider createInvoker method is called before the start method
+ * but the runtime isn't properly setup until the start method is called. This means
+ * that Invoker's can't initialize things like the services, references and  properties
+ * until start is called. This class tries to get around that by using an Invoker
+ * proxy that delays creating the real Invoker till start is called.
+ *
+ * @version $Rev$ $Date$
+ */
+public class ImplementationImplementationProvider implements ImplementationProvider {
+
+    ImplementationActivator implementationActivator;
+    RuntimeComponent runtimeComponent;
+    Implementation impl;
+    Object userImpl;
+    InvokerFactory factory;
+
+    List<InvokerProxy> invokers = new ArrayList<InvokerProxy>();
+
+    public ImplementationImplementationProvider(ImplementationActivator implementationActivator,
+                                                RuntimeComponent rc,
+                                                Implementation impl,
+                                                Object userImpl) {
+        this.implementationActivator = implementationActivator;
+        this.runtimeComponent = rc;
+        this.impl = impl;
+        this.userImpl = userImpl;
+    }
+
+    public Invoker createInvoker(RuntimeComponentService arg0, final Operation op) {
+        InvokerProxy invoker = new InvokerProxy(op);
+        return invoker;
+    }
+    
+    public boolean supportsOneWayInvocation() {
+        return false;
+    }
+
+    public void start() {
+        factory = implementationActivator.createInvokerFactory(runtimeComponent, impl, userImpl);
+    }
+
+    public void stop() {
+    }
+
+    class InvokerProxy implements Invoker {
+        Invoker invoker;
+        Operation op;
+
+        InvokerProxy(Operation op) {
+            this.op = op;
+        }
+
+        public Message invoke(Message msg) {
+            init();
+            return invoker.invoke(msg);
+        }
+
+        public synchronized void init() {
+            if (invoker == null) {
+                invoker = factory.createInvoker(op);
+            }
+        }
+    }
+}