001    /**
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    package org.apache.camel.component.bean;
018    
019    import java.lang.reflect.InvocationHandler;
020    import java.lang.reflect.InvocationTargetException;
021    import java.lang.reflect.Method;
022    
023    import org.apache.camel.Endpoint;
024    import org.apache.camel.ExchangePattern;
025    import org.apache.camel.Producer;
026    
027    /**
028     * An {@link java.lang.reflect.InvocationHandler} which invokes a
029     * message exchange on a camel {@link Endpoint}
030     *
031     * @version $Revision: 41278 $
032     */
033    public class CamelInvocationHandler implements InvocationHandler {
034        private final Endpoint endpoint;
035        private final Producer producer;
036    
037        public CamelInvocationHandler(Endpoint endpoint, Producer producer) {
038            this.endpoint = endpoint;
039            this.producer = producer;
040        }
041    
042        public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
043            BeanInvocation invocation = new BeanInvocation(method, args);
044            BeanExchange exchange = new BeanExchange(endpoint.getCamelContext(), ExchangePattern.InOut);
045            exchange.setInvocation(invocation);
046    
047            producer.process(exchange);
048            Throwable fault = exchange.getException();
049            if (fault != null) {
050                throw new InvocationTargetException(fault);
051            }
052            return exchange.getOut(true).getBody();
053        }
054    }
055