Examples of org.springframework.beans.factory.config.BeanPostProcessor

Package org.springframework.beans.factory.config

Examples of org.springframework.beans.factory.config.BeanPostProcessor

org.springframework.beans.factory.config.BeanPostProcessor
Factory hook that allows for custom modification of new bean instances, e.g. checking for marker interfaces or wrapping them with proxies.
ApplicationContexts can autodetect BeanPostProcessor beans in their bean definitions and apply them to any beans subsequently created. Plain bean factories allow for programmatic registration of post-processors, applying to all beans created through this factory.
Typically, post-processors that populate beans via marker interfaces or the like will implement {@link #postProcessBeforeInitialization}, while post-processors that wrap beans with proxies will normally implement {@link #postProcessAfterInitialization}. @author Juergen Hoeller @since 10.10.2003 @see InstantiationAwareBeanPostProcessor @see DestructionAwareBeanPostProcessor @see ConfigurableBeanFactory#addBeanPostProcessor @see BeanFactoryPostProcessor

    root.setServletContext(sc);
    root.setConfigLocations(new String[] {"/org/springframework/web/context/WEB-INF/applicationContext.xml"});
    root.addBeanFactoryPostProcessor(new BeanFactoryPostProcessor() {
      @Override
      public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) {
        beanFactory.addBeanPostProcessor(new BeanPostProcessor() {
          @Override
          @SuppressWarnings("unchecked")
          public Object postProcessBeforeInitialization(Object bean, String name) throws BeansException {
            if (bean instanceof TestBean) {
              ((TestBean) bean).getFriends().add("myFriend");

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    List<BeanPostProcessor> internalPostProcessors = new ArrayList<BeanPostProcessor>();
    List<String> orderedPostProcessorNames = new ArrayList<String>();
    List<String> nonOrderedPostProcessorNames = new ArrayList<String>();
    for (String ppName : postProcessorNames) {
      if (isTypeMatch(ppName, PriorityOrdered.class)) {
        BeanPostProcessor pp = beanFactory.getBean(ppName, BeanPostProcessor.class);
        priorityOrderedPostProcessors.add(pp);
        if (pp instanceof MergedBeanDefinitionPostProcessor) {
          internalPostProcessors.add(pp);
        }
      }
      else if (isTypeMatch(ppName, Ordered.class)) {
        orderedPostProcessorNames.add(ppName);
      }
      else {
        nonOrderedPostProcessorNames.add(ppName);
      }
    }


    // First, register the BeanPostProcessors that implement PriorityOrdered.
    OrderComparator.sort(priorityOrderedPostProcessors);
    registerBeanPostProcessors(beanFactory, priorityOrderedPostProcessors);


    // Next, register the BeanPostProcessors that implement Ordered.
    List<BeanPostProcessor> orderedPostProcessors = new ArrayList<BeanPostProcessor>();
    for (String ppName : orderedPostProcessorNames) {
      BeanPostProcessor pp = beanFactory.getBean(ppName, BeanPostProcessor.class);
      orderedPostProcessors.add(pp);
      if (pp instanceof MergedBeanDefinitionPostProcessor) {
        internalPostProcessors.add(pp);
      }
    }
    OrderComparator.sort(orderedPostProcessors);
    registerBeanPostProcessors(beanFactory, orderedPostProcessors);


    // Now, register all regular BeanPostProcessors.
    List<BeanPostProcessor> nonOrderedPostProcessors = new ArrayList<BeanPostProcessor>();
    for (String ppName : nonOrderedPostProcessorNames) {
      BeanPostProcessor pp = beanFactory.getBean(ppName, BeanPostProcessor.class);
      nonOrderedPostProcessors.add(pp);
      if (pp instanceof MergedBeanDefinitionPostProcessor) {
        internalPostProcessors.add(pp);
      }
    }

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    this.scriptBeanFactory.copyConfigurationFrom(this.beanFactory);


    // Filter out BeanPostProcessors that are part of the AOP infrastructure,
    // since those are only meant to apply to beans defined in the original factory.
    for (Iterator it = this.scriptBeanFactory.getBeanPostProcessors().iterator(); it.hasNext();) {
      BeanPostProcessor postProcessor = (BeanPostProcessor) it.next();
      if (postProcessor instanceof AopInfrastructureBean) {
        it.remove();
      }
    }
  }

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  public Object applyBeanPostProcessorsBeforeInitialization(Object existingBean, String beanName)
      throws BeansException {


    Object result = existingBean;
    for (Iterator it = getBeanPostProcessors().iterator(); it.hasNext();) {
      BeanPostProcessor beanProcessor = (BeanPostProcessor) it.next();
      result = beanProcessor.postProcessBeforeInitialization(result, beanName);
    }
    return result;
  }

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  public Object applyBeanPostProcessorsAfterInitialization(Object existingBean, String beanName)
      throws BeansException {


    Object result = existingBean;
    for (Iterator it = getBeanPostProcessors().iterator(); it.hasNext();) {
      BeanPostProcessor beanProcessor = (BeanPostProcessor) it.next();
      result = beanProcessor.postProcessAfterInitialization(result, beanName);
    }
    return result;
  }

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    }
    // Apply SmartInstantiationAwareBeanPostProcessors to predict the
    // eventual type after a before-instantiation shortcut.
    if (beanClass != null && !mbd.isSynthetic() && hasInstantiationAwareBeanPostProcessors()) {
      for (Iterator it = getBeanPostProcessors().iterator(); it.hasNext(); ) {
        BeanPostProcessor bp = (BeanPostProcessor) it.next();
        if (bp instanceof SmartInstantiationAwareBeanPostProcessor) {
          SmartInstantiationAwareBeanPostProcessor ibp = (SmartInstantiationAwareBeanPostProcessor) bp;
          Class processedType = ibp.predictBeanType(beanClass, beanName);
          if (processedType != null) {
            return processedType;

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   */
  protected Object getEarlyBeanReference(String beanName, RootBeanDefinition mbd, Object bean) {
    Object exposedObject = bean;
    if (!mbd.isSynthetic() && hasInstantiationAwareBeanPostProcessors()) {
      for (Iterator it = getBeanPostProcessors().iterator(); it.hasNext(); ) {
        BeanPostProcessor bp = (BeanPostProcessor) it.next();
        if (bp instanceof SmartInstantiationAwareBeanPostProcessor) {
          SmartInstantiationAwareBeanPostProcessor ibp = (SmartInstantiationAwareBeanPostProcessor) bp;
          exposedObject = ibp.getEarlyBeanReference(exposedObject, beanName);
        }
      }

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   */
  protected void applyMergedBeanDefinitionPostProcessors(RootBeanDefinition mbd, Class beanType, String beanName)
      throws BeansException {


    for (Iterator it = getBeanPostProcessors().iterator(); it.hasNext();) {
      BeanPostProcessor beanProcessor = (BeanPostProcessor) it.next();
      if (beanProcessor instanceof MergedBeanDefinitionPostProcessor) {
        MergedBeanDefinitionPostProcessor bdp = (MergedBeanDefinitionPostProcessor) beanProcessor;
        bdp.postProcessMergedBeanDefinition(mbd, beanType, beanName);
      }
    }

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   */
  protected Object applyBeanPostProcessorsBeforeInstantiation(Class beanClass, String beanName)
      throws BeansException {


    for (Iterator it = getBeanPostProcessors().iterator(); it.hasNext();) {
      BeanPostProcessor beanProcessor = (BeanPostProcessor) it.next();
      if (beanProcessor instanceof InstantiationAwareBeanPostProcessor) {
        InstantiationAwareBeanPostProcessor ibp = (InstantiationAwareBeanPostProcessor) beanProcessor;
        Object result = ibp.postProcessBeforeInstantiation(beanClass, beanName);
        if (result != null) {
          return result;

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  protected Constructor[] determineConstructorsFromBeanPostProcessors(Class beanClass, String beanName)
      throws BeansException {


    if (hasInstantiationAwareBeanPostProcessors()) {
      for (Iterator it = getBeanPostProcessors().iterator(); it.hasNext();) {
        BeanPostProcessor beanProcessor = (BeanPostProcessor) it.next();
        if (beanProcessor instanceof SmartInstantiationAwareBeanPostProcessor) {
          SmartInstantiationAwareBeanPostProcessor ibp = (SmartInstantiationAwareBeanPostProcessor) beanProcessor;
          Constructor[] ctors = ibp.determineCandidateConstructors(beanClass, beanName);
          if (ctors != null) {
            return ctors;

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