001    /**
002     * Copyright (c) 2000-2013 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.util;
016    
017    import com.liferay.portal.kernel.util.InitialThreadLocal;
018    
019    import java.util.HashSet;
020    import java.util.Set;
021    
022    /**
023     * <p>
024     * See http://issues.liferay.com/browse/LPS-7864.
025     * </p>
026     *
027     * @author Brian Wing Shun Chan
028     */
029    public class ThirdPartyThreadLocalRegistry {
030    
031            public static void registerThreadLocal(ThreadLocal<?> threadLocal) {
032                    Set<ThreadLocal<?>> threadLocalSet = _threadLocalSet.get();
033    
034                    threadLocalSet.add(threadLocal);
035            }
036    
037            public static void resetThreadLocals() {
038                    Set<ThreadLocal<?>> threadLocalSet = _threadLocalSet.get();
039    
040                    if (threadLocalSet == null) {
041                            return;
042                    }
043    
044                    for (ThreadLocal<?> threadLocal : threadLocalSet) {
045                            threadLocal.remove();
046                    }
047            }
048    
049            private static ThreadLocal<Set<ThreadLocal<?>>> _threadLocalSet =
050                    new InitialThreadLocal<Set<ThreadLocal<?>>>(
051                            ThirdPartyThreadLocalRegistry.class + "._threadLocalSet",
052                            new HashSet<ThreadLocal<?>>());
053    
054    }