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/**
*
* Copyright 2005 The Apache Software Foundation or its licensors, as applicable.
*
* Licensed 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.core.invocation.jdk;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.util.Map;
import org.apache.tuscany.core.invocation.InvocationConfiguration;
import org.apache.tuscany.core.invocation.MethodHashMap;
import org.apache.tuscany.core.invocation.ProxyConfiguration;
import org.apache.tuscany.core.invocation.spi.ProxyFactory;
import org.apache.tuscany.core.invocation.spi.ProxyInitializationException;
/**
* Creates proxies for handling invocations using JDK dynamic proxies
*
* @version $Rev$ $Date$
*/
public class JDKProxyFactory implements ProxyFactory {
private static final int UNINITIALIZED = 0;
private static final int INITIALIZED = 1;
private static final int ERROR = -1;
private int state = UNINITIALIZED;
private Class[] businessInterfaceArray;
private Map<Method, InvocationConfiguration> methodToInvocationConfig;
private ProxyConfiguration configuration;
public void initialize() throws ProxyInitializationException {
if (state != UNINITIALIZED) {
throw new IllegalStateException("Proxy factory in wrong state [" + state + "]");
}
Map<Method, InvocationConfiguration> invocationConfigs = configuration.getInvocationConfigurations();
methodToInvocationConfig = new MethodHashMap(invocationConfigs.size());
for (Map.Entry entry : invocationConfigs.entrySet()) {
Method method = (Method) entry.getKey();
methodToInvocationConfig.put(method, (InvocationConfiguration) entry.getValue());
}
state = INITIALIZED;
}
public Object createProxy() {
if (state != INITIALIZED) {
throw new IllegalStateException("Proxy factory not INITIALIZED [" + state + "]");
}
InvocationHandler handler = new JDKInvocationHandler(configuration.getMessageFactory(), methodToInvocationConfig);
return Proxy.newProxyInstance(configuration.getProxyClassLoader(), businessInterfaceArray, handler);
}
public ProxyConfiguration getProxyConfiguration() {
return configuration;
}
public void setProxyConfiguration(ProxyConfiguration config) {
configuration = config;
}
public void setBusinessInterface(Class interfaze) {
businessInterfaceArray = new Class[] { interfaze };
}
public Class getBusinessInterface() {
return businessInterfaceArray[0];
}
public void addInterface(Class claz) {
throw new UnsupportedOperationException("Additional proxy interfaces not yet supported");
}
public Class[] getImplementatedInterfaces() {
return businessInterfaceArray;
}
}
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