com.ca.codesv.agent

Class HijackTransformer

java.lang.Object

com.ca.codesv.agent.HijackTransformer

public class HijackTransformer
extends java.lang.Object

Our transforming implementation class which is stored in AgentTransformer.hijackTransformers.

Constructor Summary

Constructors

Constructor and Description
HijackTransformer(java.lang.String className, java.lang.String methodName, HijackBehavior hijackBehavior) Default constructor containing all necessary information.

Method Summary

Modifier and Type	Method and Description
void	disable() Helper method for disabling this hijack transformer.
void	enable() Helper method for enabling this hijack transformer.
boolean	equals(java.lang.Object o)
java.lang.String	getClassName()
HijackBehavior	getHijackBehavior()
java.lang.String	getMethodName()
java.lang.Class<?>	getTransformedClass() Class finder.
int	hashCode()
byte[]	transform(byte[] classData) This method provides generating a new code, which is inserted in order to HijackMode.

Methods inherited from class java.lang.Object

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

Constructor Detail

HijackTransformer

public HijackTransformer(java.lang.String className,
                         java.lang.String methodName,
                         HijackBehavior hijackBehavior)

Default constructor containing all necessary information.

Parameters:

className - which should be instrumented.

methodName - which should be instrumented.

hijackBehavior - specific implementation which will be called during instrumentation.

Method Detail

getHijackBehavior

public HijackBehavior getHijackBehavior()

Returns:

registered HijackBehavior.

getClassName

public java.lang.String getClassName()

Returns:

registered className.

getMethodName

public java.lang.String getMethodName()

Returns:

registered className.

getTransformedClass

public java.lang.Class<?> getTransformedClass()
                                       throws AgentException

Class finder.

Returns:

Class object founded by className.

Throws:

AgentException - If class is not loaded in class loader.

transform

public byte[] transform(byte[] classData)

This method provides generating a new code, which is inserted in order to HijackMode. In generated code is initialized HijackContext, which should contains reference of object, which is instrumented. Note that it could be null if instrumented method is static. This is decided by Modifier.isStatic(int) and CtBehavior.getModifiers().

Parameters:

classData - original class data.

Returns:

transformed class data.

disable

public void disable()

Helper method for disabling this hijack transformer.

enable

public void enable()

Helper method for enabling this hijack transformer.

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object