org.hibernate.ejb.instrument

Class InterceptFieldClassFileTransformer

java.lang.Object

org.hibernate.ejb.instrument.InterceptFieldClassFileTransformer

All Implemented Interfaces:

ClassTransformer

public class InterceptFieldClassFileTransformer
extends Object
implements ClassTransformer

Enhance the classes allowing them to implements InterceptFieldEnabled This interface is then used by Hibernate for some optimizations.

Author:

Emmanuel Bernard

Constructor Summary

Constructors

Constructor and Description
InterceptFieldClassFileTransformer(List<String> entities)

Method Summary

Methods

Modifier and Type	Method and Description
byte[]	transform(ClassLoader loader, String className, Class<?> classBeingRedefined, ProtectionDomain protectionDomain, byte[] classfileBuffer) Invoked when a class is being loaded or redefined.

Methods inherited from class java.lang.Object

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

Constructor Detail

InterceptFieldClassFileTransformer

public InterceptFieldClassFileTransformer(List<String> entities)

Method Detail

transform

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

Description copied from interface: ClassTransformer

Invoked when a class is being loaded or redefined. The implementation of this method may transform the supplied class file and return a new replacement class file.

Specified by:

transform in interface ClassTransformer

Parameters:

loader - the defining loader of the class to be transformed, may be null if the bootstrap loader

className - the name of the class in the internal form of fully qualified class and interface names

classBeingRedefined - if this is a redefine, the class being redefined, otherwise null

protectionDomain - the protection domain of the class being defined or redefined

classfileBuffer - the input byte buffer in class file format - must not be modified

Returns:

a well-formed class file buffer (the result of the transform), or null if no transform is performed

Throws:

IllegalClassFormatException - if the input does not represent a well-formed class file