javax.persistence.spi
Interface ClassTransformer


public interface ClassTransformer

Version:
$Rev: 467742 $ $Date: 2006-10-25 21:30:38 +0200 (Wed, 25 Oct 2006) $

Method Summary
 byte[] transform(java.lang.ClassLoader loader, java.lang.String className, java.lang.Class<?> classBeingRedefined, java.security.ProtectionDomain protectionDomain, byte[] classfileBuffer)
          Invoked when a class is being loaded or redefined.
 

Method Detail

transform

byte[] transform(java.lang.ClassLoader loader,
                 java.lang.String className,
                 java.lang.Class<?> classBeingRedefined,
                 java.security.ProtectionDomain protectionDomain,
                 byte[] classfileBuffer)
                 throws java.lang.instrument.IllegalClassFormatException
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.

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:
java.lang.instrument.IllegalClassFormatException - If the input does not represent a well-formed class file


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