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.util.Map; 020 021 import org.apache.camel.Endpoint; 022 import org.apache.camel.impl.DefaultComponent; 023 import org.apache.camel.impl.ProcessorEndpoint; 024 import org.apache.camel.spi.Registry; 025 import org.apache.camel.util.IntrospectionSupport; 026 import org.apache.commons.logging.Log; 027 import org.apache.commons.logging.LogFactory; 028 029 /** 030 * An alternative to the <a href="http://activemq.apache.org/pojo.html">POJO Component</a> 031 * which implements the <a href="http://activemq.apache.org/bean.html">Bean Component</a> 032 * which will look up the URI in the Spring ApplicationContext and use that to handle message dispatching. 033 * 034 * @version $Revision: 1.1 $ 035 */ 036 public class BeanComponent extends DefaultComponent { 037 private static final Log LOG = LogFactory.getLog(BeanComponent.class); 038 private ParameterMappingStrategy parameterMappingStrategy; 039 040 public BeanComponent() { 041 } 042 043 public ParameterMappingStrategy getParameterMappingStrategy() { 044 if (parameterMappingStrategy == null) { 045 parameterMappingStrategy = createParameterMappingStrategy(); 046 } 047 return parameterMappingStrategy; 048 } 049 050 public void setParameterMappingStrategy(ParameterMappingStrategy parameterMappingStrategy) { 051 this.parameterMappingStrategy = parameterMappingStrategy; 052 } 053 054 // Implementation methods 055 //----------------------------------------------------------------------- 056 057 protected Endpoint createEndpoint(String uri, String remaining, Map parameters) throws Exception { 058 Object bean = getBean(remaining); 059 BeanProcessor processor = new BeanProcessor(bean, getParameterMappingStrategy()); 060 IntrospectionSupport.setProperties(processor, parameters); 061 return new ProcessorEndpoint(uri, this, processor); 062 } 063 064 public Object getBean(String remaining) throws NoBeanAvailableException { 065 Registry registry = getCamelContext().getRegistry(); 066 Object bean = registry.lookup(remaining); 067 if (bean == null) { 068 throw new NoBeanAvailableException(remaining); 069 } 070 return bean; 071 } 072 073 protected ParameterMappingStrategy createParameterMappingStrategy() { 074 return BeanProcessor.createParameterMappingStrategy(getCamelContext()); 075 } 076 }