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

All Implemented Interfaces:
Serializable, TargetClassAware, TargetSource
```
public class HotSwappableTargetSource
extends Object
implements TargetSource, Serializable
```
TargetSource implementation 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 constructor injection.
This TargetSource is serializable if the target is at the time of serialization.
Author:
Rod Johnson, Juergen Hoeller
See Also:
Serialized Form

Constructor Summary
Constructors
Constructor Description
HotSwappableTargetSource(Object initialTarget)
Create a new HotSwappableTargetSource with the given initial target object.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`equals(Object other)`	Two HotSwappableTargetSources are equal if the current target objects are equal.
`Object`	`getTarget()`	Return a target instance.
`Class<?>`	`getTargetClass()`	Return the type of the current target object.
`int`	`hashCode()`
`boolean`	`isStatic()`	Will all calls to `TargetSource.getTarget()` return the same object?
`void`	`releaseTarget(Object target)`	Release the given target object obtained from the `TargetSource.getTarget()` method, if any.
`Object`	`swap(Object newTarget)`	Swap the target, returning the old target object.
`String`	`toString()`

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

- Constructor Detail
  - HotSwappableTargetSource
```
public HotSwappableTargetSource(Object initialTarget)
```
    Create a new HotSwappableTargetSource with the given initial target object.
    Parameters:
    initialTarget - the initial target object
- Method Detail
  - getTargetClass
```
public Class<?> getTargetClass()
```
    Return the type of the current target object.
    The returned type should usually be constant across all target objects.
    Specified by:
    getTargetClass in interface TargetClassAware
    Specified by:
    getTargetClass in interface TargetSource
    Returns:
    the type of targets returned by this TargetSource
  - isStatic
```
public final boolean isStatic()
```
    Description copied from interface: TargetSource
    Will all calls to TargetSource.getTarget() return the same object?
    In that case, there will be no need to invoke TargetSource.releaseTarget(Object), and the AOP framework can cache the return value of TargetSource.getTarget().
    Specified by:
    isStatic in interface TargetSource
    Returns:
    true if the target is immutable
    See Also:
    TargetSource.getTarget()
  - getTarget
```
public Object getTarget()
```
    Description copied from interface: TargetSource
    Return a target instance. Invoked immediately before the AOP framework calls the "target" of an AOP method invocation.
    Specified by:
    getTarget in interface TargetSource
    Returns:
    the target object which contains the joinpoint, or null if there is no actual target instance
  - releaseTarget
```
public void releaseTarget(Object target)
```
    Description copied from interface: TargetSource
    Release the given target object obtained from the TargetSource.getTarget() method, if any.
    Specified by:
    releaseTarget in interface TargetSource
    Parameters:
    target - object obtained from a call to TargetSource.getTarget()
  - swap
```
public Object swap(Object newTarget)
            throws IllegalArgumentException
```
    Swap the target, returning the old target object.
    Parameters:
    newTarget - the new target object
    Returns:
    the old target object
    Throws:
    IllegalArgumentException - if the new target is invalid
  - equals
```
public boolean equals(Object other)
```
    Two HotSwappableTargetSources are equal if the current target objects are equal.
    Overrides:
    equals in class Object
  - hashCode
```
public int hashCode()
```
    Overrides:
    hashCode in class Object
  - toString
```
public String toString()
```
    Overrides:
    toString in class Object

Class HotSwappableTargetSource

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

HotSwappableTargetSource

Method Detail

getTargetClass

isStatic

getTarget

releaseTarget

swap

equals

hashCode

toString