org.codehaus.aspectwerkz.aspect
Class IntroductionContainer

java.lang.Object
  org.codehaus.aspectwerkz.aspect.IntroductionContainer

public class IntroductionContainer

extends Object

Container for Introductions.

Author:

Alexandre Vasseur , Jonas Bonér

Field Summary

protected AspectContainer	m_definingAspectContainer The aspect container for the introduction.
protected Method[]	m_methodRepository The methods repository.
protected Map	m_perClass Holds references to the per class introductions.
protected Map	m_perInstance Holds references to the per instance introductions.
protected Introduction	m_perJvm Holds a reference to the sole per JVM introduction.
protected Map	m_perThread Holds references to the per thread introductions.
protected Introduction	m_prototype The introduction prototype.

Constructor Summary

IntroductionContainer(Introduction prototype, AspectContainer definingAspectContainer)
Creates a new container strategy.

Method Summary

Class	getTargetClass(Object mixinImpl) Returns the target class from an introduction
Object	getTargetInstance(Object mixinImpl) Returns the target instance from an introduction
Object	invokeIntroductionPerClass(Object targetInstance, int methodIndex, Object[] parameters) Invokes the method on a per class basis.
Object	invokeIntroductionPerInstance(Object targetInstance, int methodIndex, Object[] parameters) Invokes the method on a per instance basis.
Object	invokeIntroductionPerJvm(int methodIndex, Object[] parameters) Invokes the method on a per JVM basis.
Object	invokeIntroductionPerThread(int methodIndex, Object[] parameters) Invokes the method on a per thread basis.
void	swapImplementation(Class newImplementationClass) Swaps the current mixin implementation.

Methods inherited from class java.lang.Object

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

Field Detail

m_perJvm

protected Introduction m_perJvm

Holds a reference to the sole per JVM introduction.

m_perClass

protected Map m_perClass

Holds references to the per class introductions.

m_perInstance

protected Map m_perInstance

Holds references to the per instance introductions.

m_perThread

protected Map m_perThread

Holds references to the per thread introductions.

m_prototype

protected Introduction m_prototype

The introduction prototype.

m_methodRepository

protected Method[] m_methodRepository

The methods repository.

m_definingAspectContainer

protected AspectContainer m_definingAspectContainer

The aspect container for the introduction.

Constructor Detail

IntroductionContainer

public IntroductionContainer(Introduction prototype,
                             AspectContainer definingAspectContainer)

Creates a new container strategy.

Parameters:

definingAspectContainer - the aspect container

Method Detail

invokeIntroductionPerJvm

public Object invokeIntroductionPerJvm(int methodIndex,
                                       Object[] parameters)
                                throws Throwable

Invokes the method on a per JVM basis.

Parameters:

methodIndex - the method index

parameters - the parameters for the invocation

Returns:

the result from the method invocation

Throws:

Throwable

invokeIntroductionPerClass

public Object invokeIntroductionPerClass(Object targetInstance,
                                         int methodIndex,
                                         Object[] parameters)
                                  throws Throwable

Invokes the method on a per class basis.

Parameters:

targetInstance - a reference to the calling object

methodIndex - the method index

parameters - the parameters for the invocation

Returns:

the result from the method invocation

Throws:

Throwable

invokeIntroductionPerInstance

public Object invokeIntroductionPerInstance(Object targetInstance,
                                            int methodIndex,
                                            Object[] parameters)
                                     throws Throwable

Invokes the method on a per instance basis.

Parameters:

targetInstance - a reference to the target instance

methodIndex - the method index

parameters - the parameters for the invocation

Returns:

the result from the method invocation

Throws:

Throwable

invokeIntroductionPerThread

public Object invokeIntroductionPerThread(int methodIndex,
                                          Object[] parameters)
                                   throws Throwable

Invokes the method on a per thread basis.

Parameters:

methodIndex - the method index

parameters - the parameters for the invocation

Returns:

the result from the method invocation

Throws:

Throwable

swapImplementation

public void swapImplementation(Class newImplementationClass)

Swaps the current mixin implementation.

Parameters:

newImplementationClass - the class of the new implementation to use

getTargetInstance

public Object getTargetInstance(Object mixinImpl)

Returns the target instance from an introduction

Parameters:

mixinImpl - aka "this" from the mixin impl

Returns:

the target instance or null (if not perInstance deployed mixin)

getTargetClass

public Class getTargetClass(Object mixinImpl)

Returns the target class from an introduction

Parameters:

mixinImpl - aka "this" from the mixin impl

Returns:

the target instance or null (if not perInstance or perClas deployed mixin)