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## org.springframework.beans.factory.config
Interface SmartInstantiationAwareBeanPostProcessor

All Superinterfaces:
  BeanPostProcessor, InstantiationAwareBeanPostProcessor

All Known Implementing Classes:
  AbstractAdvisorAutoProxyCreator, AbstractAutoProxyCreator, AnnotationAwareAspectJAutoProxyCreator, AspectJAwareAdvisorAutoProxyCreator, AutowiredAnnotationBeanPostProcessor, BeanNameAutoProxyCreator, DefaultAdvisorAutoProxyCreator, InfrastructureAdvisorAutoProxyCreator, InstantiationAwareBeanPostProcessorAdapter, RequiredAnnotationBeanPostProcessor, ScriptFactoryPostProcessor

    public interface SmartInstantiationAwareBeanPostProcessor

extends InstantiationAwareBeanPostProcessor

Extension of the `InstantiationAwareBeanPostProcessor` interface, adding a callback for predicting the eventual type of a processed bean.

NOTE: This interface is a special purpose interface, mainly for internal use within the framework. In general, application-provided post-processors should simply implement the plain `BeanPostProcessor` interface or derive from the `InstantiationAwareBeanPostProcessorAdapter` class. New methods might be added to this interface even in point releases.

Since:
  2.0.3
Author:
  Juergen Hoeller
See Also:
  `InstantiationAwareBeanPostProcessorAdapter`

Method Summary
`java.lang.reflect.Constructor<?>[]` | `determineCandidateConstructors(java.lang.Class<?> beanClass, java.lang.String beanName)` Determine the candidate constructors to use for the given bean.
`java.lang.Object` | `getEarlyBeanReference(java.lang.Object bean, java.lang.String beanName)` Obtain a reference for early access to the specified bean, typically for the purpose of resolving a circular reference.
`java.lang.Class<?>` | `predictBeanType(java.lang.Class<?> beanClass, java.lang.String beanName)` Predict the type of the bean to be eventually returned from this processor's `InstantiationAwareBeanPostProcessor.postProcessBeforeInstantiation(java.lang.Class, java.lang.String)` callback.

Methods inherited from interface org.springframework.beans.factory.config.InstantiationAwareBeanPostProcessor
`postProcessAfterInstantiation, postProcessBeforeInstantiation, postProcessPropertyValues`

Methods inherited from interface org.springframework.beans.factory.config.BeanPostProcessor
`postProcessAfterInitialization, postProcessBeforeInitialization`

Method Detail

### predictBeanType

    java.lang.Class<?> predictBeanType(java.lang.Class<?> beanClass,
                                       java.lang.String beanName)
                                       throws BeansException

  Predict the type of the bean to be eventually returned from this processor's `InstantiationAwareBeanPostProcessor.postProcessBeforeInstantiation(java.lang.Class, java.lang.String)` callback.

  Parameters:
    `beanClass` - the raw class of the bean
    `beanName` - the name of the bean
  Returns:
    the type of the bean, or `null` if not predictable
  Throws:
    `BeansException` - in case of errors

### determineCandidateConstructors

    java.lang.reflect.Constructor<?>[] determineCandidateConstructors(java.lang.Class<?> beanClass,
                                                                      java.lang.String beanName)
                                                                      throws BeansException

  Determine the candidate constructors to use for the given bean.

  Parameters:
    `beanClass` - the raw class of the bean (never `null`)
    `beanName` - the name of the bean
  Returns:
    the candidate constructors, or `null` if none specified
  Throws:
    `BeansException` - in case of errors

### getEarlyBeanReference

    java.lang.Object getEarlyBeanReference(java.lang.Object bean,
                                           java.lang.String beanName)
                                           throws BeansException

  Obtain a reference for early access to the specified bean, typically for the purpose of resolving a circular reference.

  This callback gives post-processors a chance to expose a wrapper early - that is, before the target bean instance is fully initialized. The exposed object should be equivalent to the what `BeanPostProcessor.postProcessBeforeInitialization(java.lang.Object, java.lang.String)` / `BeanPostProcessor.postProcessAfterInitialization(java.lang.Object, java.lang.String)` would expose otherwise. Note that the object returned by this method will be used as bean reference unless the post-processor returns a different wrapper from said post-process callbacks. In other words: Those post-process callbacks may either eventually expose the same reference or alternatively return the raw bean instance from those subsequent callbacks (if the wrapper for the affected bean has been built for a call to this method already, it will be exposes as final bean reference by default).

  Parameters:
    `bean` - the raw bean instance
    `beanName` - the name of the bean
  Returns:
    the object to expose as bean reference (typically with the passed-in bean instance as default)
  Throws:
    `BeansException` - in case of errors

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