Package org.zeroturnaround.javarebel.integration.support

Class JavassistClassBytecodeProcessor

java.lang.Object

org.zeroturnaround.javarebel.integration.support.JavassistClassBytecodeProcessor

All Implemented Interfaces:

org.zeroturnaround.javarebel.ClassBytecodeProcessor

Direct Known Subclasses:

CacheAwareJavassistClassBytecodeProcessor, CBPs.DelayedProcessor

public abstract class JavassistClassBytecodeProcessor
extends Object
implements org.zeroturnaround.javarebel.ClassBytecodeProcessor

Javassist-based bytecode processor callback.

Any sub class is required to implement the process(ClassPool, ClassLoader, CtClass) method.

Constructor Summary

Constructors

Constructor	Description
JavassistClassBytecodeProcessor()

Method Summary

Modifier and Type	Method	Description
boolean	acceptPathAsClass(String classname)	Says to javassist if the path can even be a class name.
boolean	acceptPathAsPrimitive(String classname)
int	priority()
byte[]	process(ClassLoader cl, String name, byte[] bytecode)
protected byte[]	process(org.zeroturnaround.bundled.javassist.ClassPool cp, ClassLoader cl, String classname, byte[] bytecode)
abstract void	process(org.zeroturnaround.bundled.javassist.ClassPool cp, ClassLoader cl, org.zeroturnaround.bundled.javassist.CtClass ctClass)	Modifies the class to be loaded.
void	setImplicitClassNames(Map<String,String> implicitClassNames)	Can modify the class name request from javassist.
JavassistClassBytecodeProcessor	withDuplicatePatchingProtection()	Avoids duplicate patching a given class when it has already been patched.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.zeroturnaround.javarebel.ClassBytecodeProcessor

process

Constructor Details

JavassistClassBytecodeProcessor

public JavassistClassBytecodeProcessor()

Method Details

process

public byte[] process(ClassLoader cl,
 String name,
 byte[] bytecode)

Specified by:

process in interface org.zeroturnaround.javarebel.ClassBytecodeProcessor

priority

public int priority()

Specified by:

priority in interface org.zeroturnaround.javarebel.ClassBytecodeProcessor

process

protected byte[] process(org.zeroturnaround.bundled.javassist.ClassPool cp,
 ClassLoader cl,
 String classname,
 byte[] bytecode)
                  throws Exception

Throws:

Exception

setImplicitClassNames

public void setImplicitClassNames(Map<String,String> implicitClassNames)

Can modify the class name request from javassist. Used to improve performance to skip pointless name checks.

acceptPathAsClass

public boolean acceptPathAsClass(String classname)

Says to javassist if the path can even be a class name. Used to improve performance to skip pointless name checks.

acceptPathAsPrimitive

public boolean acceptPathAsPrimitive(String classname)

process

public abstract void process(org.zeroturnaround.bundled.javassist.ClassPool cp,
 ClassLoader cl,
 org.zeroturnaround.bundled.javassist.CtClass ctClass)
                      throws Exception

Modifies the class to be loaded.

Parameters:

cp - the container of CtClass objects.

cl - the class loader loading the given class.

ctClass - the class representation.

Throws:

Exception

withDuplicatePatchingProtection

public JavassistClassBytecodeProcessor withDuplicatePatchingProtection()

Avoids duplicate patching a given class when it has already been patched. The mechanism for checking this is to add a field to the class with a comma-separated list of CBP names that have been applied to the class and to check this list for a match before running the cbp.