org.aspectj/bcel-builder/src/main/java/org/aspectj/apache/bcel/util/ThreadLocalAwareRepository.java

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 * The Apache Software License, Version 1.1
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 * Copyright (c) 2001 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
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 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
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 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
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 */
package org.aspectj.apache.bcel.util;

import java.lang.ref.WeakReference;

import org.aspectj.apache.bcel.classfile.JavaClass;

public class ThreadLocalAwareRepository implements Repository {

	private static ThreadLocal<WeakReference<Repository>> threadLocal = new ThreadLocal<>();

	public static void setCurrentRepository(Repository repository) {
		threadLocal.set(new WeakReference<>(repository));
	}

	private static Repository currentRepository() {
		WeakReference<Repository> ref = threadLocal.get();
		Repository repo = null;
		if (ref != null) {
			repo = ref.get();
		}
		if (repo == null) {
			repo = SyntheticRepository.getInstance();
		}
		return repo;
	}

	@Override
	public void storeClass(JavaClass clazz) {
		currentRepository().storeClass(clazz);
	}

	@Override
	public void removeClass(JavaClass clazz) {
		currentRepository().removeClass(clazz);
	}

	@Override
	public JavaClass findClass(String className) {
		return currentRepository().findClass(className);
	}

	@Override
	public JavaClass loadClass(String className) throws ClassNotFoundException {
		return currentRepository().loadClass(className);
	}

	@Override
	public JavaClass loadClass(Class clazz) throws ClassNotFoundException {
		return currentRepository().loadClass(clazz);
	}

	@Override
	public void clear() {
		currentRepository().clear();
	}

}