org.eclipse.persistence.internal.jpa.weaving

Class PersistenceWeaver

java.lang.Object

org.eclipse.persistence.internal.jpa.weaving.PersistenceWeaver

All Implemented Interfaces:

javax.persistence.spi.ClassTransformer

public class PersistenceWeaver
extends java.lang.Object
implements javax.persistence.spi.ClassTransformer

INTERNAL: This class performs dynamic byte code weaving: for each attribute mapped with One To One mapping with Basic Indirection it substitutes the original attribute's type for ValueHolderInterface.

Constructor Summary

Constructors

Constructor and Description
PersistenceWeaver(Session session, java.util.Map classDetailsMap) INTERNAL: Creates an instance of dynamic byte code weaver.

Method Summary

Modifier and Type	Method and Description
void	clear() INTERNAL: Allow the weaver to be clear to release its referenced memory.
java.util.Map	getClassDetailsMap() INTERNAL: Get Class name in JVM '/' format to ClassDetails map.
byte[]	transform(java.lang.ClassLoader loader, java.lang.String className, java.lang.Class classBeingRedefined, java.security.ProtectionDomain protectionDomain, byte[] classfileBuffer) INTERNAL: Perform dynamic byte code weaving of class.

Methods inherited from class java.lang.Object

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

Constructor Detail

PersistenceWeaver

public PersistenceWeaver(Session session,
                         java.util.Map classDetailsMap)

INTERNAL: Creates an instance of dynamic byte code weaver.

Parameters:

session - EclipseLink session.

classDetailsMap - Class name to ClassDetails map.

Method Detail

clear

public void clear()

INTERNAL: Allow the weaver to be clear to release its referenced memory. This is require because the class loader reference to the transformer will never gc.

getClassDetailsMap

public java.util.Map getClassDetailsMap()

INTERNAL: Get Class name in JVM '/' format to ClassDetails map.

Returns:

Class name in JVM '/' format to ClassDetails map.

transform

public 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

INTERNAL: Perform dynamic byte code weaving of class.

Specified by:

transform in interface javax.persistence.spi.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:

java.lang.instrument.IllegalClassFormatException