com.sun.jdo.api.persistence.enhancer
Class ByteCodeEnhancerHelper

java.lang.Object
  com.sun.jdo.api.persistence.enhancer.ByteCodeEnhancerHelper

public class ByteCodeEnhancerHelper
extends Object

This is a helper-class to perform some useful operations outside a byte code enhancer and delegate the real work to the enhancer.

Constructor Summary

ByteCodeEnhancerHelper()

Method Summary

static boolean	enhanceClassFile(ByteCodeEnhancer enhancer, InputStream in, OutputStream out) Enhances a classfile.
static boolean	enhanceZipFile(ByteCodeEnhancer enhancer, ZipInputStream zip_in, ZipOutputStream zip_out) Enhances a zip file.

Methods inherited from class java.lang.Object

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

Constructor Detail

ByteCodeEnhancerHelper

public ByteCodeEnhancerHelper()

Method Detail

enhanceClassFile

public static final boolean enhanceClassFile(ByteCodeEnhancer enhancer,
                                             InputStream in,
                                             OutputStream out)
                                      throws EnhancerUserException,
                                             EnhancerFatalError

Enhances a classfile.

Parameters:

enhancer - The enhancer to delegate the work to.

in - The input stream with the Java class.

out - The output stream to write the enhanced class to.

Returns:

Has the input stream been enhanced?

Throws:

EnhancerUserException - If something went wrong.

EnhancerFatalError - If something went wrong.

See Also:

ByteCodeEnhancer.enhanceClassFile(java.io.InputStream, java.io.OutputStream)

enhanceZipFile

public static final boolean enhanceZipFile(ByteCodeEnhancer enhancer,
                                           ZipInputStream zip_in,
                                           ZipOutputStream zip_out)
                                    throws EnhancerUserException,
                                           EnhancerFatalError

Enhances a zip file. The zip file is given as a uip input stream. It's entries are read and - if necessary - individually enhanced. The output stream has the same compression (if any) as the input stream.

Parameters:

enhancer - The enhancer.

zip_in - The zip input stream.

zip_out - The zip output stream.

Throws:

EnhancerUserException - If something went wrong.

EnhancerFatalError - If something went wrong.

See Also:

ByteCodeEnhancer.enhanceClassFile(java.io.InputStream, java.io.OutputStream)