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+/*
+ * 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.InvocationHandler;
+import java.security.AccessController;
+import java.security.PrivilegedAction;
+import java.util.List;
+import java.util.HashMap;
+
+import org.apache.tuscany.sca.core.invocation.SCAProxy;
+import org.apache.tuscany.sca.core.context.CallableReferenceImpl;
+import org.apache.tuscany.sca.core.context.ServiceReferenceImpl;
+import org.apache.tuscany.sca.interfacedef.InterfaceContractMapper;
+import org.apache.tuscany.sca.invocation.MessageFactory;
+import org.apache.tuscany.sca.runtime.RuntimeWire;
+import org.osoa.sca.CallableReference;
+import org.osoa.sca.ServiceReference;
+
+/**
+ * the default implementation of a wire service that uses JDK dynamic proxies
+ *
+ * @version $Rev$ $Date$
+ */
+public class JDKProxyFactory implements ProxyFactory {
+ protected InterfaceContractMapper contractMapper;
+ private MessageFactory messageFactory;
+
+ public JDKProxyFactory(MessageFactory messageFactory, InterfaceContractMapper mapper) {
+ this.contractMapper = mapper;
+ this.messageFactory = messageFactory;
+ }
+
+ /**
+ * The original createProxy method assumes that the proxy doesn't want to
+ * share conversation state so sets the conversation object to null
+ */
+ public <T> T createProxy(Class<T> interfaze, RuntimeWire wire) throws ProxyCreationException {
+ ServiceReference<T> serviceReference = new ServiceReferenceImpl(interfaze, wire, this);
+ return createProxy(serviceReference);
+ }
+
+ public <T> T createProxy(CallableReference<T> callableReference) throws ProxyCreationException {
+ assert callableReference != null;
+ final Class<T> interfaze = callableReference.getBusinessInterface();
+ InvocationHandler handler = new JDKInvocationHandler(messageFactory, callableReference);
+ // Allow privileged access to class loader. Requires RuntimePermission in security policy.
+ ClassLoader cl = AccessController.doPrivileged(new PrivilegedAction<ClassLoader>() {
+ public ClassLoader run() {
+ return interfaze.getClassLoader();
+ }
+ });
+ Object proxy = SCAProxy.newProxyInstance(cl, new Class[] {interfaze}, handler);
+ ((CallableReferenceImpl)callableReference).setProxy(proxy);
+ return interfaze.cast(proxy);
+ }
+
+ public <T> T createCallbackProxy(Class<T> interfaze, List<RuntimeWire> wires) throws ProxyCreationException {
+ CallbackReferenceImpl<T> callbackReference = CallbackReferenceImpl.newInstance(interfaze, this, wires);
+ return callbackReference != null ? createCallbackProxy(callbackReference) : null;
+ }
+
+ public <T> T createCallbackProxy(CallbackReferenceImpl<T> callbackReference) throws ProxyCreationException {
+ assert callbackReference != null;
+ Class<T> interfaze = callbackReference.getBusinessInterface();
+ InvocationHandler handler = new JDKCallbackInvocationHandler(messageFactory, callbackReference);
+ ClassLoader cl = interfaze.getClassLoader();
+ Object proxy = SCAProxy.newProxyInstance(cl, new Class[] {interfaze}, handler);
+ callbackReference.setProxy(proxy);
+ return interfaze.cast(proxy);
+ }
+
+ public <B, R extends CallableReference<B>> R cast(B target) throws IllegalArgumentException {
+ InvocationHandler handler = SCAProxy.getInvocationHandler(target);
+ if (handler instanceof JDKInvocationHandler) {
+ return (R)((JDKInvocationHandler)handler).getCallableReference();
+ } else {
+ throw new IllegalArgumentException("The object is not a known proxy.");
+ }
+ }
+
+ /**
+ * @see org.apache.tuscany.sca.core.invocation.ProxyFactory#isProxyClass(java.lang.Class)
+ */
+ public boolean isProxyClass(Class<?> clazz) {
+ return SCAProxy.isProxyClass(clazz);
+ }
+}