org.springframework.instrument.classloading
Class SimpleLoadTimeWeaver

java.lang.Object
  org.springframework.instrument.classloading.SimpleLoadTimeWeaver

All Implemented Interfaces:

LoadTimeWeaver

public class SimpleLoadTimeWeaver
extends Object
implements LoadTimeWeaver

LoadTimeWeaver that builds and exposes a SimpleInstrumentableClassLoader. Mainly intended for testing environments, where it is sufficient to perform all class transformation on a newly created ClassLoader instance.

Since:

2.0

Author:

Rod Johnson, Juergen Hoeller

See Also:

getInstrumentableClassLoader(), SimpleInstrumentableClassLoader, ReflectiveLoadTimeWeaver

Constructor Summary

SimpleLoadTimeWeaver()
Create a new SimpleLoadTimeWeaver for the current context class loader.

SimpleLoadTimeWeaver(SimpleInstrumentableClassLoader classLoader)
Create a new SimpleLoadTimeWeaver for the given class loader.

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() This implementation builds a SimpleThrowawayClassLoader.

Methods inherited from class java.lang.Object

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

Constructor Detail

SimpleLoadTimeWeaver

public SimpleLoadTimeWeaver()

Create a new SimpleLoadTimeWeaver for the current context class loader.

SimpleLoadTimeWeaver

public SimpleLoadTimeWeaver(SimpleInstrumentableClassLoader classLoader)

Create a new SimpleLoadTimeWeaver for the given class loader.

Parameters:

classLoader - the ClassLoader to build an simple instrumentable ClassLoader on top of

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()

This implementation builds a SimpleThrowawayClassLoader.

Specified by:

getThrowawayClassLoader in interface LoadTimeWeaver

Returns:

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