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.Proxy;
020    
021    import org.apache.camel.Endpoint;
022    import org.apache.camel.Producer;
023    import org.apache.camel.util.ServiceHelper;
024    
025    /**
026     * Create a dynamic proxy for a given interface and endpoint that sends the parameter object to the endpoint and optionally
027     * receives a reply. Unlike the ProxyHelper this works only with methods that have only one parameter.
028     */
029    public final class PojoProxyHelper {
030        private PojoProxyHelper() {
031        }
032    
033        @SuppressWarnings("unchecked")
034        public static <T> T createProxy(Endpoint endpoint, Class<?>... interfaceClasses) throws Exception {
035            Producer producer = endpoint.createProducer();
036            // ensure the producer is started
037            ServiceHelper.startService(producer);
038            return (T)Proxy.newProxyInstance(ProxyHelper.getClassLoader(interfaceClasses), interfaceClasses.clone(), new PojoMessageInvocationHandler(endpoint, producer));
039        }
040    }