transform(loader, className, classBeingRedefined, protectionDomain, classfileBuffer) - JPA ClassTransformer's method
Method javax.persistence.spi.ClassTransformer
byte[] transform(
ClassLoader loader,
String className,
Class<?> classBeingRedefined,
ProtectionDomain protectionDomain,
byte[] classfileBuffer
)
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:
-
IllegalClassFormatException- if the input does not represent a well-formed class file
- Since:
- JPA 1.0
