Module org.eclipse.persistence.jpa

Package org.eclipse.persistence.internal.jpa.weaving

Class PersistenceWeaver

java.lang.Object

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

All Implemented Interfaces:

ClassTransformer

public class PersistenceWeaver
extends Object
implements 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.

Field Summary

Fields

Modifier and Type	Field	Description
protected Map<String,ClassDetails>	classDetailsMap	Class name in JVM '/' format to ClassDetails map.

Constructor Summary

Constructors

Constructor	Description
PersistenceWeaver(Map<String,ClassDetails> classDetailsMap)	INTERNAL: Creates an instance of dynamic byte code weaver.

Method Summary

Modifier and Type	Method	Description
void	clear()	INTERNAL: Allow the weaver to be clear to release its referenced memory.
Map<String,ClassDetails>	getClassDetailsMap()	INTERNAL: Get Class name in JVM '/' format to ClassDetails map.
protected static String	getShortName(String name)	INTERNAL: Returns an unqualified class name from the specified class name.
byte[]	transform(ClassLoader loader, String className, Class<?> classBeingRedefined, ProtectionDomain protectionDomain, byte[] classfileBuffer)	INTERNAL: Perform dynamic byte code weaving of class.

Methods inherited from class java.lang.Object

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

Field Details

classDetailsMap

protected Map<String,ClassDetails> classDetailsMap

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

Constructor Details

PersistenceWeaver

public PersistenceWeaver(Map<String,ClassDetails> classDetailsMap)

INTERNAL: Creates an instance of dynamic byte code weaver.

Parameters:

classDetailsMap - Class name to ClassDetails map.

Since:

2.7

Method Details

clear

public void clear()

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

getClassDetailsMap

public Map<String,ClassDetails> getClassDetailsMap()

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

Returns:

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

transform

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

INTERNAL: Perform dynamic byte code weaving of class.

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:

TransformerException

getShortName

protected static String getShortName(String name)

INTERNAL: Returns an unqualified class name from the specified class name.

Parameters:

name - Class name with '/' as delimiter.

Returns:

Unqualified class name.