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.spring;
018
019 import javax.xml.bind.annotation.XmlAccessType;
020 import javax.xml.bind.annotation.XmlAccessorType;
021 import javax.xml.bind.annotation.XmlAttribute;
022 import javax.xml.bind.annotation.XmlRootElement;
023 import javax.xml.bind.annotation.XmlTransient;
024
025 import org.apache.camel.CamelContext;
026 import org.apache.camel.CamelContextAware;
027 import org.apache.camel.ConsumerTemplate;
028 import org.apache.camel.impl.DefaultConsumerTemplate;
029 import org.apache.camel.model.IdentifiedType;
030 import org.apache.camel.spring.util.CamelContextResolverHelper;
031 import org.apache.camel.util.ServiceHelper;
032 import org.springframework.beans.BeansException;
033 import org.springframework.beans.factory.DisposableBean;
034 import org.springframework.beans.factory.FactoryBean;
035 import org.springframework.beans.factory.InitializingBean;
036 import org.springframework.context.ApplicationContext;
037 import org.springframework.context.ApplicationContextAware;
038
039 /**
040 * A Spring {@link org.springframework.beans.factory.FactoryBean} for creating a new {@link org.apache.camel.ConsumerTemplate}
041 * instance with a minimum of XML
042 *
043 * @version $Revision: 934375 $
044 */
045 @XmlRootElement(name = "consumerTemplate")
046 @XmlAccessorType(XmlAccessType.FIELD)
047 public class CamelConsumerTemplateFactoryBean extends IdentifiedType implements FactoryBean, InitializingBean, DisposableBean, CamelContextAware, ApplicationContextAware {
048 @XmlTransient
049 private ConsumerTemplate template;
050 @XmlAttribute
051 private String camelContextId;
052 @XmlTransient
053 private CamelContext camelContext;
054 @XmlTransient
055 private ApplicationContext applicationContext;
056 @XmlAttribute
057 private Integer maximumCacheSize;
058
059 public void afterPropertiesSet() throws Exception {
060 if (camelContext == null && camelContextId != null) {
061 camelContext = CamelContextResolverHelper.getCamelContextWithId(applicationContext, camelContextId);
062 }
063 if (camelContext == null) {
064 throw new IllegalArgumentException("A CamelContext or a CamelContextId must be injected!");
065 }
066 }
067
068 public Object getObject() throws Exception {
069 template = new DefaultConsumerTemplate(camelContext);
070
071 // set custom cache size if provided
072 if (maximumCacheSize != null) {
073 template.setMaximumCacheSize(maximumCacheSize);
074 }
075
076 // must start it so its ready to use
077 ServiceHelper.startService(template);
078 return template;
079 }
080
081 public Class getObjectType() {
082 return DefaultConsumerTemplate.class;
083 }
084
085 public boolean isSingleton() {
086 return true;
087 }
088
089 public void destroy() throws Exception {
090 ServiceHelper.stopService(template);
091 }
092
093 // Properties
094 // -------------------------------------------------------------------------
095
096 public CamelContext getCamelContext() {
097 return camelContext;
098 }
099
100 public void setCamelContext(CamelContext camelContext) {
101 this.camelContext = camelContext;
102 }
103
104 public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
105 this.applicationContext = applicationContext;
106 }
107
108 public void setCamelContextId(String camelContextId) {
109 this.camelContextId = camelContextId;
110 }
111
112 public Integer getMaximumCacheSize() {
113 return maximumCacheSize;
114 }
115
116 public void setMaximumCacheSize(Integer maximumCacheSize) {
117 this.maximumCacheSize = maximumCacheSize;
118 }
119 }