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.Endpoint;
028 import org.apache.camel.ProducerTemplate;
029 import org.apache.camel.impl.DefaultProducerTemplate;
030 import org.apache.camel.model.IdentifiedType;
031 import org.apache.camel.spring.util.CamelContextResolverHelper;
032 import org.apache.camel.util.ServiceHelper;
033 import org.springframework.beans.BeansException;
034 import org.springframework.beans.factory.DisposableBean;
035 import org.springframework.beans.factory.FactoryBean;
036 import org.springframework.beans.factory.InitializingBean;
037 import org.springframework.context.ApplicationContext;
038 import org.springframework.context.ApplicationContextAware;
039
040 /**
041 * A Spring {@link FactoryBean} for creating a new {@link org.apache.camel.ProducerTemplate}
042 * instance with a minimum of XML
043 *
044 * @version $Revision: 934375 $
045 */
046 @XmlRootElement(name = "template")
047 @XmlAccessorType(XmlAccessType.FIELD)
048 public class CamelProducerTemplateFactoryBean extends IdentifiedType implements FactoryBean, InitializingBean, DisposableBean, CamelContextAware, ApplicationContextAware {
049 @XmlTransient
050 private ProducerTemplate template;
051 @XmlAttribute(required = false)
052 private String defaultEndpoint;
053 @XmlAttribute
054 private String camelContextId;
055 @XmlTransient
056 private CamelContext camelContext;
057 @XmlTransient
058 private ApplicationContext applicationContext;
059 @XmlAttribute
060 private Integer maximumCacheSize;
061
062 public void afterPropertiesSet() throws Exception {
063 if (camelContext == null && camelContextId != null) {
064 camelContext = CamelContextResolverHelper.getCamelContextWithId(applicationContext, camelContextId);
065 }
066 if (camelContext == null) {
067 throw new IllegalArgumentException("A CamelContext or a CamelContextId must be injected!");
068 }
069 }
070
071 public Object getObject() throws Exception {
072 CamelContext context = getCamelContext();
073 if (defaultEndpoint != null) {
074 Endpoint endpoint = context.getEndpoint(defaultEndpoint);
075 if (endpoint == null) {
076 throw new IllegalArgumentException("No endpoint found for URI: " + defaultEndpoint);
077 } else {
078 template = new DefaultProducerTemplate(context, endpoint);
079 }
080 } else {
081 template = new DefaultProducerTemplate(context);
082 }
083
084 // set custom cache size if provided
085 if (maximumCacheSize != null) {
086 template.setMaximumCacheSize(maximumCacheSize);
087 }
088
089 // must start it so its ready to use
090 ServiceHelper.startService(template);
091 return template;
092 }
093
094 public Class getObjectType() {
095 return DefaultProducerTemplate.class;
096 }
097
098 public boolean isSingleton() {
099 return true;
100 }
101
102 public void destroy() throws Exception {
103 ServiceHelper.stopService(template);
104 }
105
106 // Properties
107 // -------------------------------------------------------------------------
108 public CamelContext getCamelContext() {
109 return camelContext;
110 }
111
112 public void setCamelContext(CamelContext camelContext) {
113 this.camelContext = camelContext;
114 }
115
116 /**
117 * Sets the default endpoint URI used by default for sending message exchanges
118 */
119 public void setDefaultEndpoint(String defaultEndpoint) {
120 this.defaultEndpoint = defaultEndpoint;
121 }
122
123 public void setCamelContextId(String camelContextId) {
124 this.camelContextId = camelContextId;
125 }
126
127 public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
128 this.applicationContext = applicationContext;
129 }
130
131 public Integer getMaximumCacheSize() {
132 return maximumCacheSize;
133 }
134
135 public void setMaximumCacheSize(Integer maximumCacheSize) {
136 this.maximumCacheSize = maximumCacheSize;
137 }
138
139 }