/**
*
* Copyright 2005 Protique Ltd
*
* 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.servicemix.components.reflection;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import javax.jbi.JBIException;
import javax.jbi.messaging.ExchangeStatus;
import javax.jbi.messaging.InOut;
import javax.jbi.messaging.NormalizedMessage;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.servicemix.components.util.ComponentSupport;
import org.servicemix.jbi.RuntimeJBIException;
/**
* A Proxy factory which sends the method invocations into the JBI container
* for processing.
*
* @version $Revision: 685 $
*/
public class ProxyInOutBinding extends ComponentSupport implements InvocationHandler {
private static final Log log = LogFactory.getLog(ProxyInOutBinding.class);
private ClassLoader cl;
private final Class[] interfaces;
public ProxyInOutBinding(Object target) {
this( target.getClass().getClassLoader(), target.getClass().getInterfaces());
}
public ProxyInOutBinding(ClassLoader cl, Class [] interfaces) {
this.cl = cl;
this.interfaces = interfaces;
}
public Object createProxy() {
return Proxy.newProxyInstance(cl, interfaces, this);
}
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
if (log.isTraceEnabled()) {
log.trace("Invoked: " + proxy);
}
try {
InOut messageExchange = getDeliveryChannel().createExchangeFactory().createInOutExchange();
NormalizedMessage inMessage = messageExchange.createMessage();
inMessage.setProperty("proxy", proxy);
inMessage.setProperty("method", method);
inMessage.setProperty("args", args);
messageExchange.setInMessage(inMessage);
if (getDeliveryChannel().sendSync(messageExchange)) {
NormalizedMessage outMessage = messageExchange.getOutMessage();
return getBody(outMessage);
} else if ( messageExchange.getStatus() == ExchangeStatus.ERROR ) {
throw messageExchange.getError();
}
return null;
}
catch (JBIException e) {
throw new RuntimeJBIException(e);
}
}
}