Examples of org.springframework.beans.factory.FactoryBean

Package org.springframework.beans.factory

Examples of org.springframework.beans.factory.FactoryBean

org.springframework.beans.factory.FactoryBean
Interface to be implemented by objects used within a {@link BeanFactory}which are themselves factories. If a bean implements this interface, it is used as a factory for an object to expose, not directly as a bean instance that will be exposed itself.
NB: A bean that implements this interface cannot be used as a normal bean. A FactoryBean is defined in a bean style, but the object exposed for bean references ( {@link #getObject()} is alwaysthe object that it creates.
FactoryBeans can support singletons and prototypes, and can either create objects lazily on demand or eagerly on startup. The {@link SmartFactoryBean} interface allows for exposingmore fine-grained behavioral metadata.
This interface is heavily used within the framework itself, for example for the AOP {@link org.springframework.aop.framework.ProxyFactoryBean}or the {@link org.springframework.jndi.JndiObjectFactoryBean}. It can be used for application components as well; however, this is not common outside of infrastructure code.
NOTE: FactoryBean objects participate in the containing BeanFactory's synchronization of bean creation. There is usually no need for internal synchronization other than for purposes of lazy initialization within the FactoryBean itself (or the like). @author Rod Johnson @author Juergen Hoeller @since 08.03.2003 @see org.springframework.beans.factory.BeanFactory @see org.springframework.aop.framework.ProxyFactoryBean @see org.springframework.jndi.JndiObjectFactoryBean

      }
      finally {
        // Finished partial creation of this bean.
        afterSingletonCreation(beanName);
      }
      FactoryBean fb = getFactoryBean(beanName, instance);
      if (bw != null) {
        this.factoryBeanInstanceCache.put(beanName, bw);
      }
      return fb;
    }

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      if (mbd.isSingleton()) {
        if (isFactoryBean(beanName, mbd)) {
          if (BeanFactoryUtils.isFactoryDereference(name)) {
            return true;
          }
          FactoryBean factoryBean = (FactoryBean) getBean(FACTORY_BEAN_PREFIX + beanName);
          return factoryBean.isSingleton();
        }
        else {
          return !BeanFactoryUtils.isFactoryDereference(name);
        }
      }

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      // However, FactoryBean may still produce a prototype object...
      if (BeanFactoryUtils.isFactoryDereference(name)) {
        return false;
      }
      if (isFactoryBean(beanName, mbd)) {
        final FactoryBean factoryBean = (FactoryBean) getBean(FACTORY_BEAN_PREFIX + beanName);
        if (System.getSecurityManager() != null) {
          return AccessController.doPrivileged(new PrivilegedAction<Boolean>() {
            public Boolean run() {
              return ((factoryBean instanceof SmartFactoryBean && ((SmartFactoryBean) factoryBean).isPrototype()) ||
                  !factoryBean.isSingleton());
            }
          }, getAccessControlContext());
        }
        else {
          return ((factoryBean instanceof SmartFactoryBean && ((SmartFactoryBean) factoryBean).isPrototype()) ||
              !factoryBean.isSingleton());
        }
      }
      else {
        return false;
      }

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  protected Class getTypeForFactoryBean(String beanName, RootBeanDefinition mbd) {
    if (!mbd.isSingleton()) {
      return null;
    }
    try {
      FactoryBean factoryBean = doGetBean(FACTORY_BEAN_PREFIX + beanName, FactoryBean.class, null, true);
      return getTypeForFactoryBean(factoryBean);
    }
    catch (BeanCreationException ex) {
      // Can only happen when getting a FactoryBean.
      if (logger.isDebugEnabled()) {

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    if (mbd == null) {
      object = getCachedObjectForFactoryBean(beanName);
    }
    if (object == null) {
      // Return bean instance from factory.
      FactoryBean factory = (FactoryBean) beanInstance;
      // Caches object obtained from FactoryBean if it is a singleton.
      if (mbd == null && containsBeanDefinition(beanName)) {
        mbd = getMergedLocalBeanDefinition(beanName);
      }
      boolean synthetic = (mbd != null && mbd.isSynthetic());

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      for (Iterator it = this.beanDefinitionNames.iterator(); it.hasNext();) {
        String beanName = (String) it.next();
        RootBeanDefinition bd = getMergedLocalBeanDefinition(beanName);
        if (!bd.isAbstract() && bd.isSingleton() && !bd.isLazyInit()) {
          if (isFactoryBean(beanName)) {
            FactoryBean factory = (FactoryBean) getBean(FACTORY_BEAN_PREFIX + beanName);
            if (factory instanceof SmartFactoryBean && ((SmartFactoryBean) factory).isEagerInit()) {
              getBean(beanName);
            }
          }
          else {

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    ItemProcessor<String, String> itemProcessor = (ItemProcessor<String, String>) TestUtils.getPropertyValue(chunkProcessor, "itemProcessor");
    assertNotNull("ChunkProcessor ItemWriter must not be null", itemProcessor);
    assertTrue("Got wrong instance of ItemProcessor", itemProcessor instanceof Processor);


    FactoryBean serviceActivatorFactoryBean = applicationContext.getBean(ServiceActivatorFactoryBean.class);
    assertNotNull("ServiceActivatorFactoryBean must not be null", serviceActivatorFactoryBean);
    assertNotNull("Output channel must not be null", TestUtils.getPropertyValue(serviceActivatorFactoryBean, "outputChannel"));


    MessageChannel inputChannel = applicationContext.getBean("requests", MessageChannel.class);
    assertNotNull("Input channel must not be null", inputChannel);

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    ItemWriter itemWriter = applicationContext.getBean("itemWriter", ChunkMessageChannelItemWriter.class);
    assertNotNull("Messaging template must not be null", TestUtils.getPropertyValue(itemWriter, "messagingGateway"));
    assertNotNull("Reply channel must not be null", TestUtils.getPropertyValue(itemWriter, "replyChannel"));


    FactoryBean remoteChunkingHandlerFactoryBean = applicationContext.getBean(RemoteChunkHandlerFactoryBean.class);
    assertNotNull("Chunk writer must not be null", TestUtils.getPropertyValue(remoteChunkingHandlerFactoryBean, "chunkWriter"));
    assertNotNull("Step must not be null", TestUtils.getPropertyValue(remoteChunkingHandlerFactoryBean, "step"));
  }

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            A s = hasAnnotatedProperty(pd);
            if (s != null && !pvs.contains(pd.getName())) {
                try {
                    if (logger.isDebugEnabled())
                        logger.debug("Processing annotation [" + s + "] for [" + beanName + "." + pd.getName() + "]");
                    FactoryBean importer = getServiceImporter(s, pd.getWriteMethod(), beanName);
                    // BPPs are created in stageOne(), even though they are run in stageTwo(). This check means that
                    // the call to getObject() will not fail with ServiceUnavailable. This is safe to do because
                    // ServiceReferenceDependencyBeanFactoryPostProcessor will ensure that mandatory services are
                    // satisfied before stageTwo() is run.
                    if (bean instanceof BeanPostProcessor) {
                        ImporterCallAdapter.setCardinality(importer, Cardinality.C_0__1);
                    }
                    newprops.addPropertyValue(pd.getName(), importer.getObject());
                }
                catch (Exception e) {
                    throw new FatalBeanException("Could not create service reference", e);
                }
            }

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            if (bean != null) {
                final Object fBean = bean;
                
                // Create a new FactoryBean which just return the found beab
                return new FactoryBean() {


                    @Override
                    public Object getObject() throws Exception {
                        return fBean;
                    }

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