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19  package org.apache.james.container.spring.beanfactory;
20  
21  import org.springframework.beans.BeansException;
22  import org.springframework.beans.factory.support.DefaultListableBeanFactory;
23  import org.springframework.beans.factory.xml.XmlBeanDefinitionReader;
24  import org.springframework.context.ApplicationContext;
25  import org.springframework.context.support.AbstractRefreshableApplicationContext;
26  import org.springframework.core.io.ClassPathResource;
27  import org.springframework.core.io.Resource;
28  
29  import java.io.IOException;
30  
31  /**
32   * loads an Avalon/Phoenix configuration.
33   * this is done by using a two step approach:
34   * 
35   * 1. loading the avalon mocking beans from a spring xml beans configuration
36   * 2. loading the avalon application beans from the assembly.xml
37   */
38  public class AvalonApplicationContext extends AbstractRefreshableApplicationContext {
39  
40      public static final String SPRING_BEANS_CONF = "spring-beans.xml";
41      public static final String PHOENIX_ASSEMBLY_CONF = "assembly.xml";
42      
43      private Resource containerConfigurationResource;
44      private Resource applicationConfigurationResource;
45  
46      /**
47       * configuration-by-convention constructor, tries to find default config files on classpath
48       */
49      public static AvalonApplicationContext newAvalonApplicationContext() {
50          return newAvalonApplicationContext(SPRING_BEANS_CONF, PHOENIX_ASSEMBLY_CONF);
51      }
52      
53      public static AvalonApplicationContext newAvalonApplicationContext(String containerConf, String applicationConf) {
54          return newAvalonApplicationContext(new ClassPathResource(containerConf), new ClassPathResource(applicationConf));
55      }
56      
57      
58      public static AvalonApplicationContext newAvalonApplicationContext(Resource containerConfigurationResource,
59                                      Resource applicationConfigurationResource) {
60          AvalonApplicationContext result = new AvalonApplicationContext(null, containerConfigurationResource, applicationConfigurationResource);
61          result.refresh();
62          return result;
63      }
64  
65      public AvalonApplicationContext(ApplicationContext parent, 
66                                      Resource containerConfigurationResource, 
67                                      Resource applicationConfigurationResource) {
68          super(parent);
69          this.containerConfigurationResource = containerConfigurationResource;
70          this.applicationConfigurationResource = applicationConfigurationResource;
71      }
72  
73      protected void loadBeanDefinitions(DefaultListableBeanFactory defaultListableBeanFactory) throws IOException, BeansException {
74          loadAvalonBasedBeanDefinitions(defaultListableBeanFactory, containerConfigurationResource, applicationConfigurationResource);
75      }
76  
77      public static void loadAvalonBasedBeanDefinitions(DefaultListableBeanFactory defaultListableBeanFactory, Resource containerConfigurationResource, Resource applicationConfigurationResource) {
78          XmlBeanDefinitionReader containerBeanDefinitionReader = new XmlBeanDefinitionReader(defaultListableBeanFactory);
79          int containerBeanCount = containerBeanDefinitionReader.loadBeanDefinitions(containerConfigurationResource);
80  
81          AvalonBeanDefinitionReader applicationBeanDefinitionReader = new AvalonBeanDefinitionReader(defaultListableBeanFactory);
82          int applicationBeanCount = applicationBeanDefinitionReader.loadBeanDefinitions(applicationConfigurationResource);
83  
84          int totalBeanCount = containerBeanCount + applicationBeanCount;
85      }
86  }