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

  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 (beanClass != null && 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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    // to support styles of field injection.
    boolean continueWithPropertyPopulation = true;


    if (!mbd.isSynthetic() && hasInstantiationAwareBeanPostProcessors()) {
      for (Iterator it = getBeanPostProcessors().iterator(); it.hasNext();) {
        BeanPostProcessor beanProcessor = (BeanPostProcessor) it.next();
        if (beanProcessor instanceof InstantiationAwareBeanPostProcessor) {
          InstantiationAwareBeanPostProcessor ibp = (InstantiationAwareBeanPostProcessor) beanProcessor;
          if (!ibp.postProcessAfterInstantiation(bw.getWrappedInstance(), beanName)) {
            continueWithPropertyPopulation = false;
            break;
          }
        }
      }
    }


    if (!continueWithPropertyPopulation) {
      return;
    }


    if (mbd.getResolvedAutowireMode() == RootBeanDefinition.AUTOWIRE_BY_NAME ||
        mbd.getResolvedAutowireMode() == RootBeanDefinition.AUTOWIRE_BY_TYPE) {
      MutablePropertyValues newPvs = new MutablePropertyValues(pvs);


      // Add property values based on autowire by name if applicable.
      if (mbd.getResolvedAutowireMode() == RootBeanDefinition.AUTOWIRE_BY_NAME) {
        autowireByName(beanName, mbd, bw, newPvs);
      }


      // Add property values based on autowire by type if applicable.
      if (mbd.getResolvedAutowireMode() == RootBeanDefinition.AUTOWIRE_BY_TYPE) {
        autowireByType(beanName, mbd, bw, newPvs);
      }


      pvs = newPvs;
    }


    boolean hasInstAwareBpps = hasInstantiationAwareBeanPostProcessors();
    boolean needsDepCheck = (mbd.getDependencyCheck() != RootBeanDefinition.DEPENDENCY_CHECK_NONE);


    if (hasInstAwareBpps || needsDepCheck) {
      PropertyDescriptor[] filteredPds = filterPropertyDescriptorsForDependencyCheck(bw);
      if (hasInstAwareBpps) {
        for (Iterator it = getBeanPostProcessors().iterator(); it.hasNext(); ) {
          BeanPostProcessor beanProcessor = (BeanPostProcessor) it.next();
          if (beanProcessor instanceof InstantiationAwareBeanPostProcessor) {
            InstantiationAwareBeanPostProcessor ibp = (InstantiationAwareBeanPostProcessor) beanProcessor;
            pvs = ibp.postProcessPropertyValues(pvs, filteredPds, bw.getWrappedInstance(), beanName);
            if (pvs == null) {
              return;

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        }
        if (objectName == null) {
            throw new Exception("No objectName injected for this GBean by the kernel!");
        }
        factory = new XmlBeanFactory(createResource());
        factory.addBeanPostProcessor(new BeanPostProcessor() {
            public Object postProcessBeforeInitialization(Object bean, String name) throws BeansException {
                return beforeInitialization(bean, name);
            }


            public Object postProcessAfterInitialization(Object bean, String name) throws BeansException {

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        }
        if (objectName == null) {
            throw new Exception("No objectName injected for this GBean by the kernel!");
        }
        factory = new XmlBeanFactory(createResource());
        factory.addBeanPostProcessor(new BeanPostProcessor() {
            public Object postProcessBeforeInitialization(Object bean, String name) throws BeansException {
                return beforeInitialization(bean, name);
            }


            public Object postProcessAfterInitialization(Object bean, String name) throws BeansException {

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     */
    public void defineBeanPostProcessors(ConfigurableListableBeanFactory cbf) throws BeansException
    {
        if (!cbf.containsSingleton(POST_PROCESSOR_BEAN_NAME))
        {
            BeanPostProcessor processor = new OrchestraAdvisorBeanPostProcessor(applicationContext);


            // Adding the bean to the singletons set causes it to be picked up by the standard
            // AbstractApplicationContext.RegisterBeanPostProcessors method; that calls
            // getBeanNamesForType(BeanPostProcessor.class, ...) which finds stuff in the
            // singleton map even when there is no actual BeanDefinition for it.

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