LazyInitTargetSourceCreator (Spring Framework API 2.1) - Spring Framework 2.1.0 API 文档英文版

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org.springframework.aop.framework.autoproxy.target
Class LazyInitTargetSourceCreator

java.lang.Object
  org.springframework.aop.framework.autoproxy.target.AbstractBeanFactoryBasedTargetSourceCreator
      org.springframework.aop.framework.autoproxy.target.LazyInitTargetSourceCreator

All Implemented Interfaces:: TargetSourceCreator, BeanFactoryAware, DisposableBean

public class LazyInitTargetSourceCreator
extends AbstractBeanFactoryBasedTargetSourceCreator
extends AbstractBeanFactoryBasedTargetSourceCreator

TargetSourceCreator that enforces a LazyInitTargetSource for each bean that is defined as "lazy-init". This will lead to a proxy created for each of those beans, allowing to fetch a reference to such a bean without actually initialized the target bean instance.

To be registered as custom TargetSourceCreator for an auto-proxy creator, in combination with custom interceptors for specific beans or for the creation of lazy-init proxies only. For example, as autodetected infrastructure bean in an XML application context definition:

 <bean class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">
   <property name="customTargetSourceCreators">
     <list>
       <bean class="org.springframework.aop.framework.autoproxy.target.LazyInitTargetSourceCreator"/>
     </list>
   </property>
 </bean>

 <bean id="myLazyInitBean" class="mypackage.MyBeanClass" lazy-init="true">
   ...
 </bean>

Since:: 1.2
Author:: Juergen Hoeller
See Also:: BeanDefinition.isLazyInit(), AbstractAutoProxyCreator.setCustomTargetSourceCreators(org.springframework.aop.framework.autoproxy.TargetSourceCreator[]), BeanNameAutoProxyCreator

Field Summary

Fields inherited from class org.springframework.aop.framework.autoproxy.target.AbstractBeanFactoryBasedTargetSourceCreator

logger

Constructor Summary

LazyInitTargetSourceCreator()


Method Summary

protected AbstractBeanFactoryBasedTargetSource createBeanFactoryBasedTargetSource(Class beanClass, String beanName)
          Subclasses must implement this method to return a new AbstractPrototypeBasedTargetSource if they wish to create a custom TargetSource for this bean, or null if they are not interested it in, in which case no special target source will be created.

protected boolean isPrototypeBased()
          Return whether this TargetSourceCreator is prototype-based.

Methods inherited from class org.springframework.aop.framework.autoproxy.target.AbstractBeanFactoryBasedTargetSourceCreator

destroy, getBeanFactory, getTargetSource, setBeanFactory

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Fields inherited from class org.springframework.aop.framework.autoproxy.target.AbstractBeanFactoryBasedTargetSourceCreator
`logger`

Constructor Summary
`LazyInitTargetSourceCreator()`

Method Summary
`protected AbstractBeanFactoryBasedTargetSource`	`createBeanFactoryBasedTargetSource(Class beanClass, String beanName)` Subclasses must implement this method to return a new AbstractPrototypeBasedTargetSource if they wish to create a custom TargetSource for this bean, or `null` if they are not interested it in, in which case no special target source will be created.
`protected boolean`	`isPrototypeBased()` Return whether this TargetSourceCreator is prototype-based.

Methods inherited from class org.springframework.aop.framework.autoproxy.target.AbstractBeanFactoryBasedTargetSourceCreator
`destroy, getBeanFactory, getTargetSource, setBeanFactory`

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

Constructor Detail

LazyInitTargetSourceCreator

public LazyInitTargetSourceCreator()

Method Detail

isPrototypeBased

protected boolean isPrototypeBased()

Description copied from class: AbstractBeanFactoryBasedTargetSourceCreator

Return whether this TargetSourceCreator is prototype-based. The "singleton" flag of the target bean definition will be set accordingly.

Default is "true".

Overrides:: isPrototypeBased in class AbstractBeanFactoryBasedTargetSourceCreator

See Also:: BeanDefinition.isSingleton()

createBeanFactoryBasedTargetSource

protected AbstractBeanFactoryBasedTargetSource createBeanFactoryBasedTargetSource(Class beanClass,
                                                                                  String beanName)