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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.lang.reflect.Proxy;
import java.util.List;
import org.apache.tuscany.sca.interfacedef.InterfaceContractMapper;
import org.apache.tuscany.sca.interfacedef.impl.InterfaceContractMapperImpl;
import org.apache.tuscany.sca.invocation.MessageFactory;
import org.apache.tuscany.sca.runtime.RuntimeWire;
import org.osoa.sca.CallableReference;
/**
* the default implementation of a wire service that uses JDK dynamic proxies
*
* @version $$Rev$$ $$Date: 2007-04-11 18:59:43 -0700 (Wed, 11 Apr
* 2007) $$
*/
public class JDKProxyFactory implements ProxyFactory {
protected InterfaceContractMapper contractMapper;
private MessageFactory messageFactory;
public JDKProxyFactory() {
this(new MessageFactoryImpl(), new InterfaceContractMapperImpl());
}
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 conversaton object to null
*/
public <T> T createProxy(Class<T> interfaze, RuntimeWire wire) throws ProxyCreationException {
JDKInvocationHandler handler = new JDKInvocationHandler(messageFactory, interfaze, wire);
ClassLoader cl = interfaze.getClassLoader();
return interfaze.cast(Proxy.newProxyInstance(cl, new Class[] {interfaze}, handler));
}
public <T> T createProxy(CallableReference<T> callableReference) throws ProxyCreationException {
assert callableReference != null;
Class<T> interfaze = callableReference.getBusinessInterface();
JDKInvocationHandler handler = new JDKInvocationHandler(messageFactory, callableReference);
ClassLoader cl = interfaze.getClassLoader();
return interfaze.cast(Proxy.newProxyInstance(cl, new Class[] {interfaze}, handler));
}
public <T> T createCallbackProxy(Class<T> interfaze, List<RuntimeWire> wires) throws ProxyCreationException {
ClassLoader cl = interfaze.getClassLoader();
CallbackReferenceImpl ref = new CallbackReferenceImpl(interfaze, this, wires);
JDKCallbackInvocationHandler handler = new JDKCallbackInvocationHandler(messageFactory, ref);
return interfaze.cast(Proxy.newProxyInstance(cl, new Class[] {interfaze}, handler));
}
public <B, R extends CallableReference<B>> R cast(B target) throws IllegalArgumentException {
InvocationHandler handler = Proxy.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 Proxy.isProxyClass(clazz);
}
}
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