/**
* 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.camel.component.bean;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import org.apache.camel.Endpoint;
import org.apache.camel.ExchangePattern;
import org.apache.camel.Producer;
/**
* An {@link java.lang.reflect.InvocationHandler} which invokes a
* message exchange on a camel {@link Endpoint}
*
* @version $Revision: 685050 $
*/
public class CamelInvocationHandler implements InvocationHandler {
private final Endpoint endpoint;
private final Producer producer;
private final MethodInfoCache methodInfoCache;
public CamelInvocationHandler(Endpoint endpoint, Producer producer, MethodInfoCache methodInfoCache) {
this.endpoint = endpoint;
this.producer = producer;
this.methodInfoCache = methodInfoCache;
}
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
BeanInvocation invocation = new BeanInvocation(method, args);
ExchangePattern pattern = ExchangePattern.InOut;
MethodInfo methodInfo = methodInfoCache.getMethodInfo(method);
if (methodInfo != null) {
pattern = methodInfo.getPattern();
}
BeanExchange exchange = new BeanExchange(endpoint.getCamelContext(), pattern);
exchange.setInvocation(invocation);
producer.process(exchange);
Throwable fault = exchange.getException();
if (fault != null) {
throw new InvocationTargetException(fault);
}
if (pattern.isOutCapable()) {
return exchange.getOut(true).getBody();
} else {
return null;
}
}
}