jmplib.agent.impl

Class OriginalClassLoadTimeTransformer

java.lang.Object

jmplib.agent.AbstractTransformer

jmplib.agent.impl.OriginalClassLoadTimeTransformer

All Implemented Interfaces:

java.lang.instrument.ClassFileTransformer

public class OriginalClassLoadTimeTransformer
extends AbstractTransformer

This transformer modifies original classes to add new fields and methods to support the functionality of the library .

Author:

Nacho Lagartos

Constructor Summary

Constructors

Constructor and Description
OriginalClassLoadTimeTransformer()

Method Summary

Modifier and Type	Method and Description
protected boolean	instrumentableClass(java.lang.String className, java.lang.Class<?> classBeingRedefined) It is applicable when it is the first load of the class, the class is not a version class and there is a source file of the class inside the src specified folder.
protected byte[]	transform(java.lang.String className, java.lang.Class<?> classBeingRedefined, byte[] classfileBuffer) Adds new fields and methods to the class to support the functionality of the library.

Methods inherited from class jmplib.agent.AbstractTransformer

transform

Methods inherited from class java.lang.Object

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

Constructor Detail

OriginalClassLoadTimeTransformer

public OriginalClassLoadTimeTransformer()

Method Detail

transform

protected byte[] transform(java.lang.String className,
                           java.lang.Class<?> classBeingRedefined,
                           byte[] classfileBuffer)

Adds new fields and methods to the class to support the functionality of the library. Additionally, adds the class to the instrumentables collection inside the UpdaterAgent class.

Specified by:

transform in class AbstractTransformer

Parameters:

className - The internal class name

classBeingRedefined - The Class object or nullF

classfileBuffer - The bytes of the class

Returns:

instrumentableClass

protected boolean instrumentableClass(java.lang.String className,
                                      java.lang.Class<?> classBeingRedefined)

It is applicable when it is the first load of the class, the class is not a version class and there is a source file of the class inside the src specified folder.

Specified by:

instrumentableClass in class AbstractTransformer

Parameters:

className - The internal class name

classBeingRedefined - The Class object

Returns: