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.wiki.util;
016    
017    import com.liferay.portal.kernel.cache.MultiVMPoolUtil;
018    import com.liferay.portal.kernel.cache.PortalCache;
019    import com.liferay.portal.kernel.log.Log;
020    import com.liferay.portal.kernel.log.LogFactoryUtil;
021    import com.liferay.portal.kernel.util.StringBundler;
022    import com.liferay.portal.kernel.util.StringPool;
023    import com.liferay.portal.kernel.util.StringUtil;
024    import com.liferay.portlet.wiki.PageContentException;
025    import com.liferay.portlet.wiki.model.WikiPage;
026    import com.liferay.portlet.wiki.model.WikiPageDisplay;
027    import com.liferay.portlet.wiki.service.WikiPageLocalServiceUtil;
028    
029    import java.io.Serializable;
030    
031    import java.util.Map;
032    
033    import javax.portlet.PortletURL;
034    
035    import org.apache.commons.lang.time.StopWatch;
036    
037    /**
038     * @author Jorge Ferrer
039     */
040    public class WikiCacheUtil {
041    
042            public static void clearCache(long nodeId) {
043                    _portalCache.removeAll();
044            }
045    
046            public static void clearCache(long nodeId, String title) {
047                    clearCache(nodeId);
048            }
049    
050            public static WikiPageDisplay getDisplay(
051                    long nodeId, String title, PortletURL viewPageURL,
052                    PortletURL editPageURL, String attachmentURLPrefix) {
053    
054                    StopWatch stopWatch = null;
055    
056                    if (_log.isDebugEnabled()) {
057                            stopWatch = new StopWatch();
058    
059                            stopWatch.start();
060                    }
061    
062                    String key = _encodeKey(nodeId, title, viewPageURL.toString());
063    
064                    WikiPageDisplay pageDisplay = (WikiPageDisplay)_portalCache.get(key);
065    
066                    if (pageDisplay == null) {
067                            pageDisplay = _getPageDisplay(
068                                    nodeId, title, viewPageURL, editPageURL, attachmentURLPrefix);
069    
070                            _portalCache.put(key, pageDisplay);
071                    }
072    
073                    if (_log.isDebugEnabled()) {
074                            _log.debug(
075                                    "getDisplay for {" + nodeId + ", " + title + ", " +
076                                            viewPageURL + ", " + editPageURL + "} takes " +
077                                                    stopWatch.getTime() + " ms");
078                    }
079    
080                    return pageDisplay;
081            }
082    
083            public static Map<String, Boolean> getOutgoingLinks(WikiPage page)
084                    throws PageContentException {
085    
086                    String key = _encodeKey(
087                            page.getNodeId(), page.getTitle(), _OUTGOING_LINKS);
088    
089                    Map<String, Boolean> links = (Map<String, Boolean>)_portalCache.get(
090                            key);
091    
092                    if (links == null) {
093                            links = WikiUtil.getLinks(page);
094    
095                            _portalCache.put(key, (Serializable)links);
096                    }
097    
098                    return links;
099            }
100    
101            private static String _encodeKey(
102                    long nodeId, String title, String postfix) {
103    
104                    StringBundler sb = new StringBundler(6);
105    
106                    sb.append(_CACHE_NAME);
107                    sb.append(StringPool.POUND);
108                    sb.append(StringUtil.toHexString(nodeId));
109                    sb.append(title);
110    
111                    if (postfix != null) {
112                            sb.append(StringPool.POUND);
113                            sb.append(postfix);
114                    }
115    
116                    return sb.toString();
117            }
118    
119            private static WikiPageDisplay _getPageDisplay(
120                    long nodeId, String title, PortletURL viewPageURL,
121                    PortletURL editPageURL, String attachmentURLPrefix) {
122    
123                    try {
124                            if (_log.isInfoEnabled()) {
125                                    _log.info(
126                                            "Get page display for {" + nodeId + ", " + title + ", " +
127                                                    viewPageURL + ", " + editPageURL + "}");
128                            }
129    
130                            return WikiPageLocalServiceUtil.getPageDisplay(
131                                    nodeId, title, viewPageURL, editPageURL, attachmentURLPrefix);
132                    }
133                    catch (Exception e) {
134                            if (_log.isWarnEnabled()) {
135                                    _log.warn(
136                                            "Unable to get page display for {" + nodeId + ", " + title +
137                                                    ", " + viewPageURL + ", " + editPageURL + "}");
138                            }
139    
140                            return null;
141                    }
142            }
143    
144            private static final String _CACHE_NAME = WikiCacheUtil.class.getName();
145    
146            private static final String _OUTGOING_LINKS = "OUTGOING_LINKS";
147    
148            private static Log _log = LogFactoryUtil.getLog(WikiUtil.class);
149    
150            private static PortalCache<String, Serializable> _portalCache =
151                    MultiVMPoolUtil.getCache(_CACHE_NAME);
152    
153    }