The Spring Framework

## org.springframework.aop.target
Class AbstractPrototypeBasedTargetSource

    java.lang.Object
      org.springframework.aop.target.AbstractBeanFactoryBasedTargetSource
          org.springframework.aop.target.AbstractPrototypeBasedTargetSource

All Implemented Interfaces:
  Serializable, TargetClassAware, TargetSource, BeanFactoryAware

Direct Known Subclasses:
  AbstractPoolingTargetSource, PrototypeTargetSource, ThreadLocalTargetSource

    public abstract class AbstractPrototypeBasedTargetSource

extends AbstractBeanFactoryBasedTargetSource

Base class for dynamic TargetSources that can create new prototype bean instances to support a pooling or new-instance-per-invocation strategy.

Such TargetSources must run in a BeanFactory, as it needs to call the `getBean` method to create a new prototype instance. Therefore, this base class extends `AbstractBeanFactoryBasedTargetSource`.

Author:
  Rod Johnson, Juergen Hoeller
See Also:
  `BeanFactory.getBean(java.lang.String)`, `PrototypeTargetSource`, `ThreadLocalTargetSource`, `CommonsPoolTargetSource`, Serialized Form

Field Summary

Fields inherited from class org.springframework.aop.target.AbstractBeanFactoryBasedTargetSource
`logger`

Constructor Summary
`AbstractPrototypeBasedTargetSource()`

Method Summary
`protected void` `destroyPrototypeInstance(Object target)` Subclasses should call this method to destroy an obsolete prototype instance.
`protected Object` `newPrototypeInstance()` Subclasses should call this method to create a new prototype instance.
`void` `setBeanFactory(BeanFactory beanFactory)` Set the owning BeanFactory.

Methods inherited from class org.springframework.aop.target.AbstractBeanFactoryBasedTargetSource
`copyFrom, equals, getBeanFactory, getTargetBeanName, getTargetClass, hashCode, isStatic, releaseTarget, setTargetBeanName, setTargetClass, toString, writeReplace`

Methods inherited from class java.lang.Object
`clone, finalize, getClass, notify, notifyAll, wait, wait, wait`

Methods inherited from interface org.springframework.aop.TargetSource
`getTarget`

Constructor Detail

### AbstractPrototypeBasedTargetSource

    public AbstractPrototypeBasedTargetSource()

Method Detail

### setBeanFactory

    public void setBeanFactory(BeanFactory beanFactory)
                        throws BeansException

  Description copied from class: `AbstractBeanFactoryBasedTargetSource`
  Set the owning BeanFactory. We need to save a reference so that we can use the `getBean` method on every invocation.

  Specified by:
    `setBeanFactory` in interface `BeanFactoryAware`
  Overrides:
    `setBeanFactory` in class `AbstractBeanFactoryBasedTargetSource`
  Parameters:
    `beanFactory` - owning BeanFactory (never `null`). The bean can immediately call methods on the factory.
  Throws:
    `BeansException` - in case of initialization errors
  See Also:
    `BeanInitializationException`

### newPrototypeInstance

    protected Object newPrototypeInstance()
                                   throws BeansException

  Subclasses should call this method to create a new prototype instance.

  Throws:
    `BeansException` - if bean creation failed

### destroyPrototypeInstance

    protected void destroyPrototypeInstance(Object target)

  Subclasses should call this method to destroy an obsolete prototype instance.

  Parameters:
    `target` - the bean instance to destroy

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