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: 36321 $ 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 }