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
024 /**
025 * A helper class for creating proxies which delegate to Camel
026 *
027 * @version $Revision: 640438 $
028 */
029 public final class ProxyHelper {
030
031 /**
032 * Utility classes should not have a public constructor.
033 */
034 private ProxyHelper() {
035 }
036
037 /**
038 * Creates a Proxy which sends PojoExchange to the endpoint.
039 *
040 * @throws Exception
041 */
042 public static Object createProxy(final Endpoint endpoint, ClassLoader cl, Class interfaces[])
043 throws Exception {
044 final Producer producer = endpoint.createProducer();
045 return Proxy.newProxyInstance(cl, interfaces, new CamelInvocationHandler(endpoint, producer));
046 }
047
048 /**
049 * Creates a Proxy which sends PojoExchange to the endpoint.
050 *
051 * @throws Exception
052 */
053 public static Object createProxy(Endpoint endpoint, Class interfaces[]) throws Exception {
054 if (interfaces.length < 1) {
055 throw new IllegalArgumentException("You must provide at least 1 interface class.");
056 }
057 return createProxy(endpoint, interfaces[0].getClassLoader(), interfaces);
058 }
059
060 /**
061 * Creates a Proxy which sends PojoExchange to the endpoint.
062 *
063 * @throws Exception
064 */
065 @SuppressWarnings("unchecked")
066 public static <T> T createProxy(Endpoint endpoint, ClassLoader cl, Class<T> interfaceClass)
067 throws Exception {
068 return (T)createProxy(endpoint, cl, new Class[] {interfaceClass});
069 }
070
071 /**
072 * Creates a Proxy which sends PojoExchange to the endpoint.
073 *
074 * @throws Exception
075 */
076 @SuppressWarnings("unchecked")
077 public static <T> T createProxy(Endpoint endpoint, Class<T> interfaceClass) throws Exception {
078 return (T)createProxy(endpoint, new Class[] {interfaceClass});
079 }
080
081 }