org.springframework.instrument.classloading.glassfish
Class GlassFishLoadTimeWeaver

java.lang.Object
  org.springframework.instrument.classloading.glassfish.GlassFishLoadTimeWeaver

All Implemented Interfaces:

LoadTimeWeaver

public class GlassFishLoadTimeWeaver
extends Object
implements LoadTimeWeaver

LoadTimeWeaver implementation for GlassFish's InstrumentableClassLoader.

Since:

2.0.1

Author:

Costin Leau, Juergen Hoeller

See Also:

InstrumentableClassLoader

Constructor Summary

GlassFishLoadTimeWeaver()
Create a new instance of the GlassFishLoadTimeWeaver class using the default ClassLoader.

GlassFishLoadTimeWeaver(ClassLoader classLoader)
Create a new instance of the GlassFishLoadTimeWeaver class.

Method Summary

void	addTransformer(ClassFileTransformer transformer) Add a ClassFileTransformer to be applied by this LoadTimeWeaver.
protected com.sun.enterprise.loader.InstrumentableClassLoader	determineClassLoader(ClassLoader classLoader) Determine the GlassFish InstrumentableClassLoader for the given ClassLoader.
ClassLoader	getInstrumentableClassLoader() Return a ClassLoader that supports instrumentation through AspectJ-style load-time weaving based on user-defined ClassFileTransformers.
ClassLoader	getThrowawayClassLoader() Return a throwaway ClassLoader, enabling classes to be loaded and inspected without affecting the parent ClassLoader.

Methods inherited from class java.lang.Object

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

Constructor Detail

GlassFishLoadTimeWeaver

public GlassFishLoadTimeWeaver()

Create a new instance of the GlassFishLoadTimeWeaver class using the default ClassLoader.

See Also:

GlassFishLoadTimeWeaver(ClassLoader)

GlassFishLoadTimeWeaver

public GlassFishLoadTimeWeaver(ClassLoader classLoader)

Create a new instance of the GlassFishLoadTimeWeaver class.

Parameters:

classLoader - the specific ClassLoader to use; must not be null

Throws:

IllegalArgumentException - if the supplied classLoader is null; or if the supplied classLoader is not an InstrumentableClassLoader

Method Detail

determineClassLoader

protected com.sun.enterprise.loader.InstrumentableClassLoader determineClassLoader(ClassLoader classLoader)

Determine the GlassFish InstrumentableClassLoader for the given ClassLoader.

Parameters:

classLoader - the ClassLoader to check

Returns:

the InstrumentableClassLoader, or null if none found

addTransformer

public void addTransformer(ClassFileTransformer transformer)

Description copied from interface: LoadTimeWeaver

Add a ClassFileTransformer to be applied by this LoadTimeWeaver.

Specified by:

addTransformer in interface LoadTimeWeaver

Parameters:

transformer - the ClassFileTransformer to add

getInstrumentableClassLoader

public ClassLoader getInstrumentableClassLoader()

Description copied from interface: LoadTimeWeaver

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

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

Specified by:

getInstrumentableClassLoader in interface LoadTimeWeaver

Returns:

the ClassLoader which will expose instrumented classes according to the registered transformers

getThrowawayClassLoader

public ClassLoader getThrowawayClassLoader()

Description copied from interface: LoadTimeWeaver

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

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 ClassLoader; should return a new instance for each call, with no existing state