org.openimaj.aop

Class MultiTransformClassFileTransformer

java.lang.Object

org.openimaj.aop.MultiTransformClassFileTransformer

All Implemented Interfaces:

ClassFileTransformer, javassist.Translator

public class MultiTransformClassFileTransformer
extends Object
implements ClassFileTransformer, javassist.Translator

A ClassFileTransformer that applies one or more ClassTransformers to a class before it is loaded.

Author:

Jonathon Hare (jsh2@ecs.soton.ac.uk)

Constructor Summary

Constructors

Constructor and Description
MultiTransformClassFileTransformer(ClassTransformer t1, ClassTransformer... transformers) Construct with the given ClassTransformers.

Method Summary

Methods

Modifier and Type	Method and Description
void	onLoad(javassist.ClassPool pool, String classname)
void	start(javassist.ClassPool pool)
byte[]	transform(ClassLoader loader, String className, Class<?> classBeingRedefined, ProtectionDomain protectionDomain, byte[] classfileBuffer)
byte[]	transform(String className, byte[] classfileBuffer) Transform the given class.

Methods inherited from class java.lang.Object

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

Constructor Detail

MultiTransformClassFileTransformer

public MultiTransformClassFileTransformer(ClassTransformer t1,
                                  ClassTransformer... transformers)

Construct with the given ClassTransformers.

Parameters:

t1 - the first transformer

transformers - any additional transformers

Method Detail

transform

public byte[] transform(ClassLoader loader,
               String className,
               Class<?> classBeingRedefined,
               ProtectionDomain protectionDomain,
               byte[] classfileBuffer)
                 throws IllegalClassFormatException

Specified by:

transform in interface ClassFileTransformer

Throws:

IllegalClassFormatException

transform

public byte[] transform(String className,
               byte[] classfileBuffer)

Transform the given class.

Parameters:

className - the name of the class

classfileBuffer - the class bytes

Returns:

the transformed bytes

start

public void start(javassist.ClassPool pool)
           throws javassist.NotFoundException,
                  javassist.CannotCompileException

Specified by:

start in interface javassist.Translator

Throws:

javassist.NotFoundException

javassist.CannotCompileException

onLoad

public void onLoad(javassist.ClassPool pool,
          String classname)
            throws javassist.NotFoundException,
                   javassist.CannotCompileException

Specified by:

onLoad in interface javassist.Translator

Throws:

javassist.NotFoundException

javassist.CannotCompileException