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:

AvoidDuplicatePatchingCBP, BaseServletContextImplClassBytecodeProcessor, CBPs.DelayedProcessor, ImplementInterfaceCBP, NopConstructorCBP, StandardClassLoaderCBP

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. Processors that extend this class are cached by default.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	JavassistClassBytecodeProcessor.CachingPolicy A caching policy of a JavassistClassBytecodeProcessor.

Constructor Summary

Constructors

Constructor and Description
JavassistClassBytecodeProcessor()

Method Summary

Modifier and Type	Method and Description
boolean	acceptPathAsClass(String classname) Says to javassist if the path can even be a class name.
protected JavassistClassBytecodeProcessor.CachingPolicy	getCachingPolicy() Returns the caching policy used by this processor.
byte[]	process(ClassLoader cl, String name, 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.

Methods inherited from class java.lang.Object

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

Constructor Detail

JavassistClassBytecodeProcessor

public JavassistClassBytecodeProcessor()

Method Detail

process

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

Specified by:

process in interface org.zeroturnaround.javarebel.ClassBytecodeProcessor

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.

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

getCachingPolicy

protected JavassistClassBytecodeProcessor.CachingPolicy getCachingPolicy()

Returns the caching policy used by this processor. If a processor uses a caching policy that isn't equal to NEVER, then its transformations may be cached between runs. A processor then needs to make sure that its process method does not have any side effects. Also, the processing of a tagless processor may only depend on the arguments (the class loader, the name of the class and the bytes) and on rebel.* configuration properties. In case of any other dependencies, a tag should be used to identify the processing configuration. This method returns ALWAYS if not overridden.