com.ibm.ws.classloading

Interface ClassTransformer


  1. public interface ClassTransformer
This interface allows a class to be transformed before it is loaded. It is intended for use by JPA but is defined here to avoid creating a dependency on any JPA packages.

Method Summary

Modifier and Type Method and Description
  1. byte[]
transformClass(java.lang.String name,byte[] bytes,java.security.CodeSource source,java.lang.ClassLoader loader)
The following method is to be called before a class is defined.

Method Detail

transformClass

  1. byte[] transformClass(java.lang.String name,
  2. byte[] bytes,
  3. java.security.CodeSource source,
  4. java.lang.ClassLoader loader)
The following method is to be called before a class is defined.
Parameters:
name - Name of the class being defined
bytes - Byte code as loaded from disk
source - Code source used to define the class.
loader - Classloader to create the class from classByte.
Returns:
The transformed byte code returned by the persistence provider. If no transformation takes place, the original classBytes is returned. All data of the returned byte[] MUST be used by the classloader to define the POJO entity class. I.e. returnClass = defineClass(name, classBytes, 0, classBytes.length, cs);