org.springframework.aop.target

类 EmptyTargetSource

java.lang.Object

org.springframework.aop.target.EmptyTargetSource

所有已实现的接口:

Serializable, TargetClassAware, TargetSource

public class EmptyTargetSource
extends Object
implements TargetSource, Serializable

Canonical TargetSource when there is no target (or just the target class known), and behavior is supplied by interfaces and advisors only.

作者:

Rod Johnson, Juergen Hoeller

另请参阅:

序列化表格

字段概要

字段

限定符和类型	字段和说明
static EmptyTargetSource	INSTANCE The canonical (Singleton) instance of this EmptyTargetSource.

方法概要

限定符和类型	方法和说明
boolean	equals(Object other)
static EmptyTargetSource	forClass(Class<?> targetClass) Return an EmptyTargetSource for the given target Class.
static EmptyTargetSource	forClass(Class<?> targetClass, boolean isStatic) Return an EmptyTargetSource for the given target Class.
Object	getTarget() Always returns null.
Class<?>	getTargetClass() Always returns the specified target Class, or null if none.
int	hashCode()
boolean	isStatic() Always returns true.
void	releaseTarget(Object target) Nothing to release.
String	toString()

从类继承的方法 java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

字段详细资料

INSTANCE

public static final EmptyTargetSource INSTANCE

The canonical (Singleton) instance of this EmptyTargetSource.

方法详细资料

forClass

public static EmptyTargetSource forClass(@Nullable
                                         Class<?> targetClass)

Return an EmptyTargetSource for the given target Class.

参数:

targetClass - the target Class (may be null)

另请参阅:

getTargetClass()

forClass

public static EmptyTargetSource forClass(@Nullable
                                         Class<?> targetClass,
                                         boolean isStatic)

Return an EmptyTargetSource for the given target Class.

参数:

targetClass - the target Class (may be null)

isStatic - whether the TargetSource should be marked as static

另请参阅:

getTargetClass()

getTargetClass

@Nullable
public Class<?> getTargetClass()

Always returns the specified target Class, or null if none.

指定者:

getTargetClass 在接口中 TargetClassAware

指定者:

getTargetClass 在接口中 TargetSource

返回:

the type of targets returned by this TargetSource

isStatic

public boolean isStatic()

Always returns true.

指定者:

isStatic 在接口中 TargetSource

返回:

true if the target is immutable

另请参阅:

TargetSource.getTarget()

getTarget

@Nullable
public Object getTarget()

Always returns null.

指定者:

getTarget 在接口中 TargetSource

返回:

the target object which contains the joinpoint, or null if there is no actual target instance

releaseTarget

public void releaseTarget(Object target)

Nothing to release.

指定者:

releaseTarget 在接口中 TargetSource

参数:

target - object obtained from a call to TargetSource.getTarget()

equals

public boolean equals(Object other)

覆盖:

equals 在类中 Object

hashCode

public int hashCode()

覆盖:

hashCode 在类中 Object

toString

public String toString()

覆盖:

toString 在类中 Object