com.liferay.portlet.wiki.util.WikiCacheUtil.java Source code

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Here is the source code for com.liferay.portlet.wiki.util.WikiCacheUtil.java

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/**
 * Copyright (c) 2000-2012 Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 */

package com.liferay.portlet.wiki.util;

import com.liferay.portal.kernel.cache.MultiVMPoolUtil;
import com.liferay.portal.kernel.cache.PortalCache;
import com.liferay.portal.kernel.log.Log;
import com.liferay.portal.kernel.log.LogFactoryUtil;
import com.liferay.portal.kernel.util.StringBundler;
import com.liferay.portal.kernel.util.StringPool;
import com.liferay.portal.kernel.util.StringUtil;
import com.liferay.portlet.wiki.PageContentException;
import com.liferay.portlet.wiki.model.WikiPage;
import com.liferay.portlet.wiki.model.WikiPageDisplay;
import com.liferay.portlet.wiki.service.WikiPageLocalServiceUtil;

import java.util.Map;

import javax.portlet.PortletURL;

import org.apache.commons.lang.time.StopWatch;

/**
 * @author Jorge Ferrer
 */
public class WikiCacheUtil {

    public static void clearCache(long nodeId) {
        _portalCache.removeAll();
    }

    public static void clearCache(long nodeId, String title) {
        clearCache(nodeId);
    }

    public static WikiPageDisplay getDisplay(long nodeId, String title, PortletURL viewPageURL,
            PortletURL editPageURL, String attachmentURLPrefix) {

        StopWatch stopWatch = null;

        if (_log.isDebugEnabled()) {
            stopWatch = new StopWatch();

            stopWatch.start();
        }

        String key = _encodeKey(nodeId, title, viewPageURL.toString());

        WikiPageDisplay pageDisplay = (WikiPageDisplay) _portalCache.get(key);

        if (pageDisplay == null) {
            pageDisplay = _getPageDisplay(nodeId, title, viewPageURL, editPageURL, attachmentURLPrefix);

            _portalCache.put(key, pageDisplay);
        }

        if (_log.isDebugEnabled()) {
            _log.debug("getDisplay for {" + nodeId + ", " + title + ", " + viewPageURL + ", " + editPageURL
                    + "} takes " + stopWatch.getTime() + " ms");
        }

        return pageDisplay;
    }

    public static Map<String, Boolean> getOutgoingLinks(WikiPage page) throws PageContentException {

        String key = _encodeKey(page.getNodeId(), page.getTitle(), _OUTGOING_LINKS);

        Map<String, Boolean> links = (Map<String, Boolean>) _portalCache.get(key);

        if (links == null) {
            links = WikiUtil.getLinks(page);

            _portalCache.put(key, links);
        }

        return links;
    }

    private static String _encodeKey(long nodeId, String title, String postfix) {

        StringBundler sb = new StringBundler(6);

        sb.append(_CACHE_NAME);
        sb.append(StringPool.POUND);
        sb.append(StringUtil.toHexString(nodeId));
        sb.append(title);

        if (postfix != null) {
            sb.append(StringPool.POUND);
            sb.append(postfix);
        }

        return sb.toString();
    }

    private static WikiPageDisplay _getPageDisplay(long nodeId, String title, PortletURL viewPageURL,
            PortletURL editPageURL, String attachmentURLPrefix) {

        try {
            if (_log.isInfoEnabled()) {
                _log.info("Get page display for {" + nodeId + ", " + title + ", " + viewPageURL + ", " + editPageURL
                        + "}");
            }

            return WikiPageLocalServiceUtil.getPageDisplay(nodeId, title, viewPageURL, editPageURL,
                    attachmentURLPrefix);
        } catch (Exception e) {
            if (_log.isWarnEnabled()) {
                _log.warn("Unable to get page display for {" + nodeId + ", " + title + ", " + viewPageURL + ", "
                        + editPageURL + "}");
            }

            return null;
        }
    }

    private static final String _CACHE_NAME = WikiCacheUtil.class.getName();

    private static final String _OUTGOING_LINKS = "OUTGOING_LINKS";

    private static Log _log = LogFactoryUtil.getLog(WikiUtil.class);

    private static PortalCache _portalCache = MultiVMPoolUtil.getCache(_CACHE_NAME);

}