Examples of org.springframework.beans.factory.BeanFactory

Package org.springframework.beans.factory

Examples of org.springframework.beans.factory.BeanFactory

org.springframework.beans.factory.BeanFactory
The root interface for accessing a Spring bean container. This is the basic client view of a bean container; further interfaces such as {@link ListableBeanFactory} and{@link org.springframework.beans.factory.config.ConfigurableBeanFactory}are available for specific purposes.
This interface is implemented by objects that hold a number of bean definitions, each uniquely identified by a String name. Depending on the bean definition, the factory will return either an independent instance of a contained object (the Prototype design pattern), or a single shared instance (a superior alternative to the Singleton design pattern, in which the instance is a singleton in the scope of the factory). Which type of instance will be returned depends on the bean factory configuration: the API is the same. Since Spring 2.0, further scopes are available depending on the concrete application context (e.g. "request" and "session" scopes in a web environment).
The point of this approach is that the BeanFactory is a central registry of application components, and centralizes configuration of application components (no more do individual objects need to read properties files, for example). See chapters 4 and 11 of "Expert One-on-One J2EE Design and Development" for a discussion of the benefits of this approach.
Note that it is generally better to rely on Dependency Injection ("push" configuration) to configure application objects through setters or constructors, rather than use any form of "pull" configuration like a BeanFactory lookup. Spring's Dependency Injection functionality is implemented using this BeanFactory interface and its subinterfaces.
Normally a BeanFactory will load bean definitions stored in a configuration source (such as an XML document), and use the org.springframework.beans package to configure the beans. However, an implementation could simply return Java objects it creates as necessary directly in Java code. There are no constraints on how the definitions could be stored: LDAP, RDBMS, XML, properties file, etc. Implementations are encouraged to support references amongst beans (Dependency Injection).
In contrast to the methods in {@link ListableBeanFactory}, all of the operations in this interface will also check parent factories if this is a {@link HierarchicalBeanFactory}. If a bean is not found in this factory instance, the immediate parent factory will be asked. Beans in this factory instance are supposed to override beans of the same name in any parent factory.
Bean factory implementations should support the standard bean lifecycle interfaces as far as possible. The full set of initialization methods and their standard order is:
1. BeanNameAware's setBeanName
2. BeanClassLoaderAware's setBeanClassLoader
3. BeanFactoryAware's setBeanFactory
4. ResourceLoaderAware's setResourceLoader (only applicable when running in an application context)
5. ApplicationEventPublisherAware's setApplicationEventPublisher (only applicable when running in an application context)
6. MessageSourceAware's setMessageSource (only applicable when running in an application context)
7. ApplicationContextAware's setApplicationContext (only applicable when running in an application context)
8. ServletContextAware's setServletContext (only applicable when running in a web application context)
9. postProcessBeforeInitialization methods of BeanPostProcessors
10. InitializingBean's afterPropertiesSet
11. a custom init-method definition
12. postProcessAfterInitialization methods of BeanPostProcessors
On shutdown of a bean factory, the following lifecycle methods apply:
1. DisposableBean's destroy
2. a custom destroy-method definition @author Rod Johnson @author Juergen Hoeller @author Chris Beams @since 13 April 2001 @see BeanNameAware#setBeanName @see BeanClassLoaderAware#setBeanClassLoader @see BeanFactoryAware#setBeanFactory @see org.springframework.context.ResourceLoaderAware#setResourceLoader @see org.springframework.context.ApplicationEventPublisherAware#setApplicationEventPublisher @see org.springframework.context.MessageSourceAware#setMessageSource @see org.springframework.context.ApplicationContextAware#setApplicationContext @see org.springframework.web.context.ServletContextAware#setServletContext @see org.springframework.beans.factory.config.BeanPostProcessor#postProcessBeforeInitialization @see InitializingBean#afterPropertiesSet @see org.springframework.beans.factory.support.RootBeanDefinition#getInitMethodName @see org.springframework.beans.factory.config.BeanPostProcessor#postProcessAfterInitialization @see DisposableBean#destroy @see org.springframework.beans.factory.support.RootBeanDefinition#getDestroyMethodName

    }.runTest();
  }


  public void testRequiresListableBeanFactoryAndChokesOnAnythingElse() throws Exception {
    MockControl mockBeanFactory = MockControl.createControl(BeanFactory.class);
    final BeanFactory beanFactory = (BeanFactory) mockBeanFactory.getMock();
    mockBeanFactory.replay();


    new AssertThrows(FatalBeanException.class) {
      public void test() throws Exception {
        ServiceLocatorFactoryBean factory = new ServiceLocatorFactoryBean();

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    DependenciesBean rod5 = (DependenciesBean) xbf.getBean("rod5");
    // Should not have been autowired
    assertNull(rod5.getSpouse());


    BeanFactory appCtx = (BeanFactory) xbf.getBean("childAppCtx");
    assertTrue(appCtx.containsBean("rod1"));
    assertTrue(appCtx.containsBean("jenny"));
  }

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   * So rubbish class names in bean defs must now not be 'resolved' when the
   * bean def is being parsed, 'cos everything on a bean def is now lazy, but
   * must rather only be picked up when the bean is instantiated.
   */
  public void testClassNotFoundWithDefaultBeanClassLoader() {
    BeanFactory factory = new XmlBeanFactory(new ClassPathResource("classNotFound.xml", getClass()));
    // cool, no errors, so the rubbish class name in the bean def was not resolved
    try {
      // let's resolve the bean definition; must blow up
      factory.getBean("classNotFound");
      fail("Must have thrown a CannotLoadBeanClassException");
    }
    catch (CannotLoadBeanClassException ex) {
      assertTrue(ex.getResourceDescription().indexOf("classNotFound.xml") != -1);
      assertTrue(ex.getCause() instanceof ClassNotFoundException);

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   public void create(DeploymentInfo di) throws DeploymentException
   {
      URL docURL = getDocUrl(di);
      String defaultName = getDefaultName(di);
      BeanFactory beanFactory = null;
      ClassLoader cl = Thread.currentThread().getContextClassLoader();
      try
      {
         Thread.currentThread().setContextClassLoader(di.ucl);
         beanFactory = createBeanFactory(defaultName, new UrlResource(docURL));

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   {
      try
      {
         URL docURL = getDocUrl(di);
         String name = (String) beanFactoryNamesMap.remove(docURL.toString());
         BeanFactory beanFactory = lookup(name);
         doClose(beanFactory);
         unbind(name);
         log.info("Bean factory [" + name + "] unbinded from local JNDI.");
      }
      catch (Exception e)

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      }
   }


   public BeanFactory lookup(String name) throws Exception
   {
      BeanFactory beanFactory = (BeanFactory) Util.lookup(name, getExactBeanFactoryClass());
      log.debug("Found Spring bean factory [" + name + "]: " + beanFactory);
      return beanFactory;
   }

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      return jndiName;
   }


   private Object getObjectFromBeanFactory(Spring spring, String defaultBeanName, Class beanType) throws Exception
   {
      BeanFactory beanFactory = (BeanFactory) Util.lookup(getJndiName(spring.jndiName()), BeanFactory.class);
      String beanName = spring.bean();
      if (beanName != null && beanName.length() > 0)
      {
         return beanFactory.getBean(beanName, beanType);
      }
      else
      {
         // by type injection
         if (beanFactory instanceof ListableBeanFactory)
         {
            ListableBeanFactory lbf = (ListableBeanFactory) beanFactory;
            Map beans = lbf.getBeansOfType(beanType);
            if (beans.size() > 1)
            {
               Object bean = beans.get(defaultBeanName);
               if (bean == null)
               {
                  throw new IllegalArgumentException("More than one bean of type: " + beanType);
               }
               return bean;
            }
            else if (beans.size() == 1)
            {
               return beans.values().iterator().next();
            }
            else
            {
               throw new IllegalArgumentException("No such bean by type: " + beanType);
            }
         }
         else
         {
            // bean factory is not listable - use default bean name
            return beanFactory.getBean(defaultBeanName, beanType);
         }
      }
   }

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      FlowStateBean flowBean = super
          .getFlowBeanFromContext(executionContext);
      //MessageLogs tmpMl = flowBean.getMLog();


      // Get the Spring bean responsible for loading the decision table
      BeanFactory appContext = super.getSpringContext();
      dtLoader = (SpringDecisionTableLoader) appContext
          .getBean(SPRING_DECISION_TABLE_LOADER_BEAN_NAME);


      //Set the state that we are in on the bean
      
      // Carry out the processing using the Delegate

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   */
  protected BeanFactory getSpringContext() throws RpException {
      
    log.debug("getting Spring context ");
    
    BeanFactory myFactory = ContextLoader.getHandleToBeanFactory();
    
    log.debug("BeanFactory is Null:"+myFactory);
    return myFactory;

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    try{
      //Carry out the processing
      FlowStateBean flowBean=super.getFlowBeanFromContext(executionContext);
      
      // Get the Spring bean responsible for loading the decision table
      BeanFactory appContext = super.getSpringContext();
      MessageDao mDao = (MessageDao) appContext.getBean(DAO_NAME);
      
      
      


        executionContext.leaveNode();

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