org.springframework.aop

Class TrueMethodMatcher

java.lang.Object

org.springframework.aop.TrueMethodMatcher

All Implemented Interfaces:

java.io.Serializable, MethodMatcher

class TrueMethodMatcher
extends java.lang.Object
implements MethodMatcher, java.io.Serializable

Canonical MethodMatcher instance that matches all methods.

Author:

Rod Johnson

Field Summary

Fields

Modifier and Type	Field and Description
static TrueMethodMatcher	INSTANCE

Fields inherited from interface org.springframework.aop.MethodMatcher

TRUE

Constructor Summary

Constructors

Modifier	Constructor and Description
private	TrueMethodMatcher() Enforce Singleton pattern.

Method Summary

Modifier and Type	Method and Description
boolean	isRuntime() Is this MethodMatcher dynamic, that is, must a final call be made on the MethodMatcher.matches(java.lang.reflect.Method, Class, Object[]) method at runtime even if the 2-arg matches method returns true?
boolean	matches(java.lang.reflect.Method method, java.lang.Class<?> targetClass) Perform static checking whether the given method matches.
boolean	matches(java.lang.reflect.Method method, java.lang.Class<?> targetClass, java.lang.Object... args) Check whether there a runtime (dynamic) match for this method, which must have matched statically.
private java.lang.Object	readResolve() Required to support serialization.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final TrueMethodMatcher INSTANCE

Constructor Detail

TrueMethodMatcher

private TrueMethodMatcher()

Enforce Singleton pattern.

Method Detail

isRuntime

public boolean isRuntime()

Description copied from interface: MethodMatcher

Is this MethodMatcher dynamic, that is, must a final call be made on the MethodMatcher.matches(java.lang.reflect.Method, Class, Object[]) method at runtime even if the 2-arg matches method returns true?

Can be invoked when an AOP proxy is created, and need not be invoked again before each method invocation,

Specified by:

isRuntime in interface MethodMatcher

Returns:

whether or not a runtime match via the 3-arg MethodMatcher.matches(java.lang.reflect.Method, Class, Object[]) method is required if static matching passed

matches

public boolean matches(java.lang.reflect.Method method,
                       @Nullable
                       java.lang.Class<?> targetClass)

Description copied from interface: MethodMatcher

Perform static checking whether the given method matches. If this returns false or if the MethodMatcher.isRuntime() method returns false, no runtime check (i.e. no. MethodMatcher.matches(java.lang.reflect.Method, Class, Object[]) call) will be made.

Specified by:

matches in interface MethodMatcher

Parameters:

method - the candidate method

targetClass - the target class (may be null, in which case the candidate class must be taken to be the method's declaring class)

Returns:

whether or not this method matches statically

matches

public boolean matches(java.lang.reflect.Method method,
                       @Nullable
                       java.lang.Class<?> targetClass,
                       java.lang.Object... args)

Description copied from interface: MethodMatcher

Check whether there a runtime (dynamic) match for this method, which must have matched statically.

This method is invoked only if the 2-arg matches method returns true for the given method and target class, and if the MethodMatcher.isRuntime() method returns true. Invoked immediately before potential running of the advice, after any advice earlier in the advice chain has run.

Specified by:

matches in interface MethodMatcher

Parameters:

method - the candidate method

targetClass - the target class (may be null, in which case the candidate class must be taken to be the method's declaring class)

args - arguments to the method

Returns:

whether there's a runtime match

See Also:

MethodMatcher.matches(Method, Class)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

readResolve

private java.lang.Object readResolve()

Required to support serialization. Replaces with canonical instance on deserialization, protecting Singleton pattern. Alternative to overriding equals().