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/*******************************************************************************
* Copyright (c) 1998, 2013 Oracle and/or its affiliates. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
* which accompanies this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* Contributors:
* mmacivor - April 25/2008 - 1.0M8 - Initial implementation
******************************************************************************/
package org.eclipse.persistence.internal.jaxb;


import java.lang.reflect.Type;
import java.util.Map;
import java.util.HashMap;
import java.util.concurrent.atomic.AtomicInteger;

import org.eclipse.persistence.jaxb.TypeMappingInfo;
/**
 * INTERNAL:
 * Purpose:Provide a ClassLoader implementation to allow the definition of ASM generated 
 * wrapper classes, and to lookup those classes when required.
 * 
Responsibilities:

 * Wrap the provided ClassLoader and pass method calls along
 * Maintain a map of generated wrapper classes and attempt lookups in that map if a class isn't found
 * in the nested loader
 * Provide a public API to define a class from an array of bytes and a class name
 * This class is a ClassLoader implementation that maintains a map of wrapper classes generated during
 * JAXB generation. If a class is not found in the nested classLoader, then the map of generated classes
 * is checked.
 * @author mmacivor
 *
 */
public class JaxbClassLoader extends ClassLoader {

    private static final String GENERATED_CLASS_NAME = "org.eclipse.persistence.jaxb.generated";
	private Map generatedClasses;
    private AtomicInteger generatedClassCounter = new AtomicInteger();
	
	public JaxbClassLoader(ClassLoader nestedClassLoader) {
	    super(nestedClassLoader);
		this.generatedClasses = new HashMap();
	}
	
	public JaxbClassLoader(ClassLoader nestedClassLoader, Class[] classes) {
	    super(nestedClassLoader);
		this.generatedClasses = new HashMap();
		if(classes != null){
			for(int i=0; i