org.springframework.aop.target
Class HotSwappableTargetSource

java.lang.Object
  org.springframework.aop.target.HotSwappableTargetSource

All Implemented Interfaces:

TargetSource

public class HotSwappableTargetSource

extends java.lang.Object

implements TargetSource

Implementation of TargetSource interface that caches a local target object, but allows the target to be swapped while the application is running. If configuring an object of this class in a Spring IoC container, use Type 3 (constructor-style) IoC.

Version:

$Id: HotSwappableTargetSource.java,v 1.5 2004/03/18 02:46:13 trisberg Exp $

Author:

Rod Johnson

Constructor Summary

HotSwappableTargetSource(java.lang.Object initialTarget)
Create a new HotSwappableTargetSource with the initial target

Method Summary

boolean	equals(java.lang.Object other) Two invoker interceptors are equal if they have the same target or if the targets are equal.
java.lang.Object	getTarget() Synchronization around something that takes so little time is fine
java.lang.Class	getTargetClass()
boolean	isStatic()
void	releaseTarget(java.lang.Object o)
java.lang.Object	swap(java.lang.Object newTarget) Swap the target, returning the old target

Methods inherited from class java.lang.Object

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

Constructor Detail

HotSwappableTargetSource

public HotSwappableTargetSource(java.lang.Object initialTarget)

Create a new HotSwappableTargetSource with the initial target

Parameters:

initialTarget - initial target

Method Detail

getTargetClass

public java.lang.Class getTargetClass()

Specified by:

getTargetClass in interface TargetSource

isStatic

public final boolean isStatic()

Specified by:

isStatic in interface TargetSource

See Also:

TargetSource.isStatic()

getTarget

public final java.lang.Object getTarget()

Synchronization around something that takes so little time is fine

Specified by:

getTarget in interface TargetSource

See Also:

TargetSource.getTarget()

releaseTarget

public void releaseTarget(java.lang.Object o)

Specified by:

releaseTarget in interface TargetSource

See Also:

TargetSource.releaseTarget(java.lang.Object)

swap

public java.lang.Object swap(java.lang.Object newTarget)
                      throws AopConfigException

Swap the target, returning the old target

Parameters:

newTarget - new target

Returns:

the old target

Throws:

AopConfigException - if the new target is invalid

equals

public boolean equals(java.lang.Object other)

Two invoker interceptors are equal if they have the same target or if the targets are equal.