org.springframework.cglib.proxy

Class MethodProxy

java.lang.Object

org.springframework.cglib.proxy.MethodProxy

public class MethodProxy
extends java.lang.Object

Classes generated by Enhancer pass this object to the registered MethodInterceptor objects when an intercepted method is invoked. It can be used to either invoke the original method, or call the same method on a different object of the same type.

Version:

$Id: MethodProxy.java,v 1.16 2009/01/11 20:09:48 herbyderby Exp $

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	MethodProxy.CreateInfo
private static class	MethodProxy.FastClassInfo

Field Summary

Fields

Modifier and Type	Field and Description
private MethodProxy.CreateInfo	createInfo
private MethodProxy.FastClassInfo	fastClassInfo
private java.lang.Object	initLock
private Signature	sig1
private Signature	sig2

Constructor Summary

Constructors

Modifier	Constructor and Description
private	MethodProxy()

Method Summary

Modifier and Type	Method and Description
static MethodProxy	create(java.lang.Class c1, java.lang.Class c2, java.lang.String desc, java.lang.String name1, java.lang.String name2) For internal use by Enhancer only; see the org.springframework.cglib.reflect.FastMethod class for similar functionality.
static MethodProxy	find(java.lang.Class type, Signature sig) Return the MethodProxy used when intercepting the method matching the given signature.
(package private) FastClass	getFastClass()
Signature	getSignature() Return the signature of the proxied method.
(package private) FastClass	getSuperFastClass()
int	getSuperIndex() Return the org.springframework.cglib.reflect.FastClass method index for the method used by invokeSuper(java.lang.Object, java.lang.Object[]).
java.lang.String	getSuperName() Return the name of the synthetic method created by CGLIB which is used by invokeSuper(java.lang.Object, java.lang.Object[]) to invoke the superclass (non-intercepted) method implementation.
private static FastClass	helper(MethodProxy.CreateInfo ci, java.lang.Class type)
private void	init()
java.lang.Object	invoke(java.lang.Object obj, java.lang.Object[] args) Invoke the original method, on a different object of the same type.
java.lang.Object	invokeSuper(java.lang.Object obj, java.lang.Object[] args) Invoke the original (super) method on the specified object.

Methods inherited from class java.lang.Object

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

Field Detail

sig1

private Signature sig1

sig2

private Signature sig2

createInfo

private MethodProxy.CreateInfo createInfo

initLock

private final java.lang.Object initLock

fastClassInfo

private volatile MethodProxy.FastClassInfo fastClassInfo

Constructor Detail

MethodProxy

private MethodProxy()

Method Detail

create

public static MethodProxy create(java.lang.Class c1,
                                 java.lang.Class c2,
                                 java.lang.String desc,
                                 java.lang.String name1,
                                 java.lang.String name2)

For internal use by Enhancer only; see the org.springframework.cglib.reflect.FastMethod class for similar functionality.

init

private void init()

helper

private static FastClass helper(MethodProxy.CreateInfo ci,
                                java.lang.Class type)

getSignature

public Signature getSignature()

Return the signature of the proxied method.

getSuperName

public java.lang.String getSuperName()

Return the name of the synthetic method created by CGLIB which is used by invokeSuper(java.lang.Object, java.lang.Object[]) to invoke the superclass (non-intercepted) method implementation. The parameter types are the same as the proxied method.

getSuperIndex

public int getSuperIndex()

Return the org.springframework.cglib.reflect.FastClass method index for the method used by invokeSuper(java.lang.Object, java.lang.Object[]). This index uniquely identifies the method within the generated proxy, and therefore can be useful to reference external metadata.

See Also:

getSuperName()

getFastClass

FastClass getFastClass()

getSuperFastClass

FastClass getSuperFastClass()

find

public static MethodProxy find(java.lang.Class type,
                               Signature sig)

Return the MethodProxy used when intercepting the method matching the given signature.

Parameters:

type - the class generated by Enhancer

sig - the signature to match

Returns:

the MethodProxy instance, or null if no applicable matching method is found

Throws:

java.lang.IllegalArgumentException - if the Class was not created by Enhancer or does not use a MethodInterceptor

invoke

public java.lang.Object invoke(java.lang.Object obj,
                               java.lang.Object[] args)
                        throws java.lang.Throwable

Invoke the original method, on a different object of the same type.

Parameters:

obj - the compatible object; recursion will result if you use the object passed as the first argument to the MethodInterceptor (usually not what you want)

args - the arguments passed to the intercepted method; you may substitute a different argument array as long as the types are compatible

Throws:

java.lang.Throwable - the bare exceptions thrown by the called method are passed through without wrapping in an InvocationTargetException

See Also:

MethodInterceptor#intercept

invokeSuper

public java.lang.Object invokeSuper(java.lang.Object obj,
                                    java.lang.Object[] args)
                             throws java.lang.Throwable

Invoke the original (super) method on the specified object.

Parameters:

obj - the enhanced object, must be the object passed as the first argument to the MethodInterceptor

args - the arguments passed to the intercepted method; you may substitute a different argument array as long as the types are compatible

Throws:

java.lang.Throwable - the bare exceptions thrown by the called method are passed through without wrapping in an InvocationTargetException

See Also:

MethodInterceptor#intercept