oracle.toplink.essentials.internal.weaving

Class TopLinkWeaver

java.lang.Object

oracle.toplink.essentials.internal.weaving.TopLinkWeaver

All Implemented Interfaces:

ClassTransformer

public class TopLinkWeaver
extends Object
implements ClassTransformer

INTERNAL: This class performs dynamic bytecode 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 and Description
protected Map	classDetailsMap
protected Session	session
static String	WEAVER_COULD_NOT_WRITE
static String	WEAVER_FAILED
static String	WEAVER_NOT_OVERWRITING
static String	WEAVER_TRANSFORMED_CLASS
static String	WEAVING_OUTPUT_PATH
static String	WEAVING_SHOULD_OVERWRITE

Constructor Summary

Constructors

Constructor and Description
TopLinkWeaver(Session session, Map classDetailsMap)

Method Summary

Modifier and Type	Method and Description
Map	getClassDetailsMap()
protected static String	getShortName(String name)
protected void	log(int level, String msg, Object[] params)
protected void	log(int level, Throwable t)
protected void	outputFile(String className, byte[] classBytes, String outputPath)
byte[]	transform(ClassLoader loader, String className, Class classBeingRedefined, ProtectionDomain protectionDomain, byte[] classfileBuffer) Invoked when a class is being loaded or redefined.

Methods inherited from class java.lang.Object

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

Field Detail

WEAVING_OUTPUT_PATH

public static final String WEAVING_OUTPUT_PATH

See Also:

Constant Field Values

WEAVING_SHOULD_OVERWRITE

public static final String WEAVING_SHOULD_OVERWRITE

See Also:

Constant Field Values

WEAVER_NOT_OVERWRITING

public static final String WEAVER_NOT_OVERWRITING

See Also:

Constant Field Values

WEAVER_COULD_NOT_WRITE

public static final String WEAVER_COULD_NOT_WRITE

See Also:

Constant Field Values

WEAVER_FAILED

public static final String WEAVER_FAILED

See Also:

Constant Field Values

WEAVER_TRANSFORMED_CLASS

public static final String WEAVER_TRANSFORMED_CLASS

See Also:

Constant Field Values

session

protected Session session

classDetailsMap

protected Map classDetailsMap

Constructor Detail

TopLinkWeaver

public TopLinkWeaver(Session session,
                     Map classDetailsMap)

Method Detail

getClassDetailsMap

public Map getClassDetailsMap()

transform

public byte[] transform(ClassLoader loader,
                        String className,
                        Class classBeingRedefined,
                        ProtectionDomain protectionDomain,
                        byte[] classfileBuffer)
                 throws IllegalClassFormatException

Description copied from interface: ClassTransformer

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.

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:

IllegalClassFormatException - If the input does not represent a well-formed class file

outputFile

protected void outputFile(String className,
                          byte[] classBytes,
                          String outputPath)

getShortName

protected static String getShortName(String name)

log

protected void log(int level,
                   String msg,
                   Object[] params)

log

protected void log(int level,
                   Throwable t)