content: /*
   * This library is part of OpenCms -
   * the Open Source Content Management System
   *
   * Copyright (c) Alkacon Software GmbH & Co. KG (https://www.alkacon.com)
   *
   * 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.
   *
   * For further information about Alkacon Software, please see the
   * company website: https://www.alkacon.com
   *
   * For further information about OpenCms, please see the
   * project website: https://www.opencms.org
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   */
  
  package org.opencms.site.xmlsitemap;
  
  import org.opencms.main.CmsLog;
  
  import java.util.concurrent.ConcurrentHashMap;
  
  import org.apache.commons.logging.Log;
  
  /**
   * Cache for XML sitemaps.<p>
   */
  public class CmsXmlSitemapCache {
  
      /** The logger for this class. */
      private static final Log LOG = CmsLog.getLog(CmsXmlSitemapCache.class);
  
      /** Static instance for this class. */
      public static final CmsXmlSitemapCache INSTANCE = new CmsXmlSitemapCache();
  
      /** The map for storing the cached sitemaps. */
      private ConcurrentHashMap<String, String> m_cache = new ConcurrentHashMap<String, String>();
  
      /**
       * Clears the cache.<p>
       */
      public void clear() {
  
          m_cache.clear();
      }
  
      /**
       * Gets the cached entry for the given key (the key will normally be the root path of a sitemap.xml file).<p>
       *
       * @param key the key
       * @return the cached XML sitemap, or null if no cached value exists
       */
      public String get(String key) {
  
          return m_cache.get(key);
      }
  
      /**
       * Stores an XML sitemap in the cache.<p>
       *
       * @param key the XML sitemap key (usually the root path of the sitemap.xml)
       * @param value the XML sitemap content
       */
      public void put(String key, String value) {
  
          LOG.info("Caching sitemap for key " + key + ", size = " + value.length());
          m_cache.put(key, value);
      }
  
  }
  