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 */ 017package org.apache.camel.impl; 018 019import org.apache.camel.CamelContext; 020import org.apache.camel.Component; 021import org.apache.camel.Exchange; 022import org.apache.camel.PollingConsumer; 023import org.apache.camel.Processor; 024import org.apache.camel.Producer; 025 026/** 027 * An endpoint which allows exchanges to be sent into it which just invokes a 028 * given {@link Processor}. This component does not support the use of 029 * consumers. 030 * <p/> 031 * <br/>Implementors beware that this endpoint creates producers and consumers which 032 * doesn't allow you full control of its lifecycle as a {@link org.apache.camel.Service} 033 * or {@link org.apache.camel.SuspendableService} would do. 034 * If your producers/consumers need more control of its lifecycle it is advised instead to extend 035 * {@link org.apache.camel.impl.DefaultEndpoint}, {@link org.apache.camel.impl.DefaultProducer} 036 * and {@link org.apache.camel.impl.DefaultConsumer}. 037 * 038 * @version 039 */ 040public class ProcessorEndpoint extends DefaultPollingEndpoint { 041 private Processor processor; 042 043 protected ProcessorEndpoint() { 044 } 045 046 @SuppressWarnings("deprecation") 047 public ProcessorEndpoint(String endpointUri, CamelContext context, Processor processor) { 048 super(endpointUri); 049 this.setCamelContext(context); 050 this.processor = processor; 051 } 052 053 public ProcessorEndpoint(String endpointUri, Component component, Processor processor) { 054 super(endpointUri, component); 055 this.processor = processor; 056 } 057 058 protected ProcessorEndpoint(String endpointUri, Component component) { 059 super(endpointUri, component); 060 } 061 062 @Deprecated 063 public ProcessorEndpoint(String endpointUri, Processor processor) { 064 super(endpointUri); 065 this.processor = processor; 066 } 067 068 public Producer createProducer() throws Exception { 069 return new DefaultProducer(this) { 070 public void process(Exchange exchange) throws Exception { 071 onExchange(exchange); 072 } 073 }; 074 } 075 076 @Override 077 public PollingConsumer createPollingConsumer() throws Exception { 078 PollingConsumer answer = new ProcessorPollingConsumer(this, getProcessor()); 079 configurePollingConsumer(answer); 080 return answer; 081 } 082 083 public Processor getProcessor() throws Exception { 084 if (processor == null) { 085 processor = createProcessor(); 086 } 087 return processor; 088 } 089 090 public void setProcessor(Processor processor) { 091 this.processor = processor; 092 } 093 094 protected Processor createProcessor() throws Exception { 095 return new Processor() { 096 public void process(Exchange exchange) throws Exception { 097 onExchange(exchange); 098 } 099 }; 100 } 101 102 protected void onExchange(Exchange exchange) throws Exception { 103 getProcessor().process(exchange); 104 } 105 106 public boolean isSingleton() { 107 return true; 108 } 109}