接口 SmartInstantiationAwareBeanPostProcessor

方法详细资料

• predictBeanType

  Class<?> predictBeanType​(Class<?> beanClass,
                           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.

  参数:

  beanClass - the raw class of the bean

  beanName - the name of the bean

  返回:

  the type of the bean, or null if not predictable

  抛出:

  BeansException - in case of errors

• determineCandidateConstructors

  Constructor<?>[] determineCandidateConstructors​(Class<?> beanClass,
                                                  String beanName)
                                           throws BeansException

  Determine the candidate constructors to use for the given bean.

  参数:

  beanClass - the raw class of the bean (never null)

  beanName - the name of the bean

  返回:

  the candidate constructors, or null if none specified

  抛出:

  BeansException - in case of errors

• getEarlyBeanReference

  Object getEarlyBeanReference​(Object bean,
                               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).

  参数:

  bean - the raw bean instance

  beanName - the name of the bean

  返回:

  the object to expose as bean reference (typically with the passed-in bean instance as default)

  抛出:

  BeansException - in case of errors