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.portlet.social.util;
016    
017    import com.liferay.portal.kernel.util.AutoResetThreadLocal;
018    import com.liferay.portal.util.PortalUtil;
019    
020    import java.util.Stack;
021    
022    /**
023     * @author Zsolt Berentey
024     */
025    public class SocialActivityHierarchyEntryThreadLocal {
026    
027            public static void clear() {
028                    Stack<SocialActivityHierarchyEntry> activityHierarchyEntries =
029                            _activityHierarchyEntries.get();
030    
031                    activityHierarchyEntries.clear();
032            }
033    
034            public static SocialActivityHierarchyEntry peek() {
035                    Stack<SocialActivityHierarchyEntry> activityHierarchyEntries =
036                            _activityHierarchyEntries.get();
037    
038                    if (activityHierarchyEntries.isEmpty()) {
039                            return null;
040                    }
041    
042                    return activityHierarchyEntries.peek();
043            }
044    
045            public static SocialActivityHierarchyEntry pop() {
046                    Stack<SocialActivityHierarchyEntry> activityHierarchyEntries =
047                            _activityHierarchyEntries.get();
048    
049                    if (activityHierarchyEntries.isEmpty()) {
050                            return null;
051                    }
052    
053                    return activityHierarchyEntries.pop();
054            }
055    
056            public static void push(Class<?> clazz, long classPK) {
057                    long classNameId = PortalUtil.getClassNameId(clazz);
058    
059                    push(classNameId, classPK);
060            }
061    
062            public static void push(long classNameId, long classPK) {
063                    Stack<SocialActivityHierarchyEntry> activityHierarchyEntries =
064                            _activityHierarchyEntries.get();
065    
066                    activityHierarchyEntries.push(
067                            new SocialActivityHierarchyEntry(classNameId, classPK));
068            }
069    
070            public static void push(String className, long classPK) {
071                    long classNameId = PortalUtil.getClassNameId(className);
072    
073                    push(classNameId, classPK);
074            }
075    
076            private static ThreadLocal<Stack<SocialActivityHierarchyEntry>>
077                    _activityHierarchyEntries =
078                            new AutoResetThreadLocal<Stack<SocialActivityHierarchyEntry>>(
079                                    SocialActivityHierarchyEntryThreadLocal.class +
080                                            "._activityHierarchyEntries",
081                                    new Stack<SocialActivityHierarchyEntry>());
082    
083    }