Class Transformer

java.lang.Object

org.jrd.agent.Transformer

All Implemented Interfaces:

ClassFileTransformer

public class Transformer
extends Object
implements ClassFileTransformer

This class represent our transformer for retrieving bytecode.

Field Summary

Fields

Modifier and Type	Field	Description
private boolean	allowToSaveBytecode
private ClassClassLoaderMap	overrides
private ClassClassLoaderMap	results

Constructor Summary

Constructors

Constructor	Description
Transformer()

Method Summary

Modifier and Type	Method	Description
void	allowToSaveBytecode()	This method allows saving of bytecode
List<String[]>	cleanOverrides(String patterns)
void	denyToSaveBytecode()	This method denies the bytecode to be saved during transformation.
List<String[]>	getOverriddenFqnPairs()
List<String>	getOverriddenFqns()
byte[]	getResult(String name, String classloader)	Returns bytecode of transformed class.
(package private) void	removeOverride(String clazz)
(package private) void	removeOverride(String clazz, String classloader)
void	resetLastValidResult()	Resets the map with results to empty map
void	setOverride(String name, byte[] body, String classloader)
byte[]	transform(ClassLoader loader, String className, Class<?> clazz, ProtectionDomain domain, byte[] classfileBuffer)

Methods inherited from class Object

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

Methods inherited from interface ClassFileTransformer

transform

Field Details

allowToSaveBytecode

private volatile boolean allowToSaveBytecode

results

private ClassClassLoaderMap results

overrides

private ClassClassLoaderMap overrides

Constructor Details

Transformer

public Transformer()

Method Details

transform

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

Specified by:

transform in interface ClassFileTransformer

Throws:

IllegalClassFormatException

getResult

public byte[] getResult(String name,
 String classloader)

Returns bytecode of transformed class.

Parameters:

name - name of class we want to get

Returns:

bytes of given class

setOverride

public void setOverride(String name,
 byte[] body,
 String classloader)

getOverriddenFqns

public List<String> getOverriddenFqns()

getOverriddenFqnPairs

public List<String[]> getOverriddenFqnPairs()

resetLastValidResult

public void resetLastValidResult()

Resets the map with results to empty map

allowToSaveBytecode

public void allowToSaveBytecode()

This method allows saving of bytecode

denyToSaveBytecode

public void denyToSaveBytecode()

This method denies the bytecode to be saved during transformation.

removeOverride

void removeOverride(String clazz)

removeOverride

void removeOverride(String clazz,
 String classloader)

cleanOverrides

public List<String[]> cleanOverrides(String patterns)