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1   /*** 
2    * 
3    * Copyright 2004 Protique Ltd
4    * 
5    * Licensed under the Apache License, Version 2.0 (the "License"); 
6    * you may not use this file except in compliance with the License. 
7    * You may obtain a copy of the License at 
8    * 
9    * http://www.apache.org/licenses/LICENSE-2.0
10   * 
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS, 
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
14   * See the License for the specific language governing permissions and 
15   * limitations under the License. 
16   * 
17   **/
18  package org.codehaus.activemq.spring;
19  
20  import org.apache.commons.logging.Log;
21  import org.apache.commons.logging.LogFactory;
22  import org.codehaus.activemq.broker.BrokerContainer;
23  import org.codehaus.activemq.broker.BrokerContainerFactory;
24  import org.codehaus.activemq.broker.BrokerContext;
25  import org.springframework.core.io.Resource;
26  import org.springframework.core.io.ResourceEditor;
27  
28  /***
29   * A Spring implementatation of {@link BrokerContainerFactory} which uses an XML
30   * deployment configuration file to load and configure a {@link BrokerContainer}
31   *
32   * @version $Revision: 1.3 $
33   */
34  public class SpringBrokerContainerFactory implements BrokerContainerFactory {
35      private static final Log log = LogFactory.getLog(SpringBrokerContainerFactory.class);
36  
37      private Resource resource;
38  
39  
40      /***
41       * A static factory method that can be used in Spring config files using a factory method
42       * mechanism to create a broker container easily.
43       */
44      public static BrokerContainer newInstance(Resource resource, String brokerName) {
45          SpringBrokerContainerFactory factory = new SpringBrokerContainerFactory(resource);
46          return factory.createBrokerContainer(brokerName, BrokerContext.getInstance());
47      }
48  
49      /***
50       * A helper method, invoked via reflection, to create a new factory from a given configuration
51       * file String which if it starts with classpath: is a classpath URI otherwise a URL is assumed.
52       *
53       * @param resourceName
54       * @return
55       */
56      public static SpringBrokerContainerFactory newFactory(String resourceName) {
57          ResourceEditor editor = new ResourceEditor();
58          editor.setAsText(resourceName);
59          Resource resource = (Resource) editor.getValue();
60          if (resource == null) {
61              throw new IllegalArgumentException("Could not convert '" + resourceName + "' into a Spring Resource");
62          }
63          return new SpringBrokerContainerFactory(resource);
64      }
65  
66      public SpringBrokerContainerFactory() {
67      }
68  
69      public SpringBrokerContainerFactory(Resource resource) {
70          this.resource = resource;
71      }
72  
73      public BrokerContainer createBrokerContainer(String brokerName, BrokerContext context) {
74          log.info("Loading ActiveMQ broker from configuration: " + resource);
75  
76          ActiveMQBeanFactory beanFactory = new ActiveMQBeanFactory(brokerName, resource);
77          return (BrokerContainer) beanFactory.getBean("broker");
78      }
79  
80      // Properties
81      //-------------------------------------------------------------------------
82      public Resource getResource() {
83          return resource;
84      }
85  
86      public void setResource(Resource resource) {
87          this.resource = resource;
88      }
89  }