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 }