org.springframework.instrument.classloading.oc4j
Class OC4JLoadTimeWeaver

java.lang.Object
  org.springframework.instrument.classloading.oc4j.OC4JLoadTimeWeaver

All Implemented Interfaces:

LoadTimeWeaver

public class OC4JLoadTimeWeaver
extends Object
implements LoadTimeWeaver

LoadTimeWeaver implementation for OC4J's instrumentable ClassLoader.

NOTE: Requires Oracle OC4J version 10.1.3.1 or higher.

Many thanks to Mike Keith for his assistance.

Since:

2.0

Author:

Costin Leau

Constructor Summary

OC4JLoadTimeWeaver()
Creates a new instance of thie OC4JLoadTimeWeaver class using the default class loader.

OC4JLoadTimeWeaver(ClassLoader classLoader)
Creates a new instance of the OC4JLoadTimeWeaver class using the supplied ClassLoader.

Method Summary

void	addTransformer(ClassFileTransformer transformer) Add a class file transformer to be applied by this load-time weaver.
ClassLoader	getInstrumentableClassLoader() Return a class loader that supports instrumentation through AspectJ-style load-time weaving based on user-defined ClassFileTransformers.
ClassLoader	getThrowawayClassLoader() Return a throwaway class loader, enabling classes to be loaded and inspected without affecting the parent class loader.

Methods inherited from class java.lang.Object

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

Constructor Detail

OC4JLoadTimeWeaver

public OC4JLoadTimeWeaver()

Creates a new instance of thie OC4JLoadTimeWeaver class using the default class loader.

See Also:

ClassUtils.getDefaultClassLoader()

OC4JLoadTimeWeaver

public OC4JLoadTimeWeaver(ClassLoader classLoader)

Creates a new instance of the OC4JLoadTimeWeaver class using the supplied ClassLoader.

Parameters:

classLoader - the ClassLoader to delegate to for weaving (must not be null)

Throws:

IllegalArgumentException - if the supplied ClassLoader is null

See Also:

getInstrumentableClassLoader()

Method Detail

addTransformer

public void addTransformer(ClassFileTransformer transformer)

Description copied from interface: LoadTimeWeaver

Add a class file transformer to be applied by this load-time weaver.

Specified by:

addTransformer in interface LoadTimeWeaver

Parameters:

transformer - the class file transformer to add

getInstrumentableClassLoader

public ClassLoader getInstrumentableClassLoader()

Description copied from interface: LoadTimeWeaver

Return a class loader that supports instrumentation through AspectJ-style load-time weaving based on user-defined ClassFileTransformers.

May be the current class loader, or a class loader created by this LoadTimeWeaver instance.

Specified by:

getInstrumentableClassLoader in interface LoadTimeWeaver

Returns:

a class loader that supports instrumentation through AspectJ-style load-time weaving based on user-defined ClassFileTransformers

getThrowawayClassLoader

public ClassLoader getThrowawayClassLoader()

Description copied from interface: LoadTimeWeaver

Return a throwaway class loader, enabling classes to be loaded and inspected without affecting the parent class loader.

Should not return the same instance of the ClassLoader returned from an invocation of LoadTimeWeaver.getInstrumentableClassLoader().

Specified by:

getThrowawayClassLoader in interface LoadTimeWeaver

Returns:

a temporary throwaway class loader; should return a new instance for each call, with no existing state