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.Processor;
023 import org.apache.camel.converter.ObjectConverter;
024 import org.apache.camel.impl.DefaultComponent;
025 import org.apache.camel.impl.ProcessorEndpoint;
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: 660275 $
035 */
036 public class BeanComponent extends DefaultComponent {
037 private static final transient Log LOG = LogFactory.getLog(BeanComponent.class);
038 private ParameterMappingStrategy parameterMappingStrategy;
039
040 public BeanComponent() {
041 }
042
043 /**
044 * A helper method to create a new endpoint from a bean with a generated URI
045 */
046 public ProcessorEndpoint createEndpoint(Object bean) {
047 String uri = "bean:generated:" + bean;
048 return createEndpoint(bean, uri);
049 }
050
051 /**
052 * A helper method to create a new endpoint from a bean with a given URI
053 */
054 public ProcessorEndpoint createEndpoint(Object bean, String uri) {
055 BeanProcessor processor = new BeanProcessor(bean, getCamelContext(), getParameterMappingStrategy());
056 return createEndpoint(uri, processor);
057 }
058
059 public ParameterMappingStrategy getParameterMappingStrategy() {
060 if (parameterMappingStrategy == null) {
061 parameterMappingStrategy = createParameterMappingStrategy();
062 }
063 return parameterMappingStrategy;
064 }
065
066 public void setParameterMappingStrategy(ParameterMappingStrategy parameterMappingStrategy) {
067 this.parameterMappingStrategy = parameterMappingStrategy;
068 }
069
070 // Implementation methods
071 //-----------------------------------------------------------------------
072 protected Endpoint createEndpoint(String uri, String remaining, Map parameters) throws Exception {
073 BeanEndpoint endpoint = new BeanEndpoint(uri, this);
074 endpoint.setBeanName(remaining);
075 endpoint.setCache(ObjectConverter.toBool(parameters.remove("cache")));
076 Processor processor = endpoint.getProcessor();
077 setProperties(processor, parameters);
078 return endpoint;
079 }
080
081 protected BeanEndpoint createEndpoint(String uri, BeanProcessor processor) {
082 return new BeanEndpoint(uri, this, processor);
083 }
084
085 protected ParameterMappingStrategy createParameterMappingStrategy() {
086 return BeanInfo.createParameterMappingStrategy(getCamelContext());
087 }
088 }