001 /*
002 *
003 * $Revision: 15105 $ $Date: 2009-04-23 11:23:28 +0200 (Do, 23. Apr 2009) $
004 *
005 * This file is part of *** M y C o R e ***
006 * See http://www.mycore.de/ for details.
007 *
008 * This program is free software; you can use it, redistribute it
009 * and / or modify it under the terms of the GNU General Public License
010 * (GPL) as published by the Free Software Foundation; either version 2
011 * of the License or (at your option) any later version.
012 *
013 * This program is distributed in the hope that it will be useful, but
014 * WITHOUT ANY WARRANTY; without even the implied warranty of
015 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
016 * GNU General Public License for more details.
017 *
018 * You should have received a copy of the GNU General Public License
019 * along with this program, in a file called gpl.txt or license.txt.
020 * If not, write to the Free Software Foundation Inc.,
021 * 59 Temple Place - Suite 330, Boston, MA 02111-1307 USA
022 */
023
024 package org.mycore.frontend.indexbrowser.lucene;
025
026 import java.util.List;
027
028 import javax.servlet.http.HttpServletRequest;
029
030 import org.jdom.Document;
031 import org.jdom.Element;
032
033 /**
034 * contains utility functions for indexbrowser
035 *
036 * @author Anja Schaar, Andreas Trappe, Matthias Eichner, Robert Stephan
037 */
038 public class MCRIndexBrowserUtils{
039
040 private static final long serialVersionUID = 4963472470316616461L;
041
042 protected MCRIndexBrowserIncomingData incomingBrowserData;
043
044 protected MCRIndexBrowserConfig config;
045
046
047
048 /**
049 * Creates a xml document with the results of the index browser.
050 * @return
051 */
052 public static Document createResultListDocument(MCRIndexBrowserIncomingData incomingBrowserData,
053 MCRIndexBrowserConfig config) {
054 List<MCRIndexBrowserEntry> resultList = null;
055 String index = config.getIndex();
056 if(MCRIndexBrowserCache.isCached(index, incomingBrowserData)) {
057 resultList = MCRIndexBrowserCache.getFromCache(index, incomingBrowserData);
058 } else {
059 MCRIndexBrowserSearcher searcher = new MCRIndexBrowserSearcher(incomingBrowserData, config);
060 resultList = searcher.doSearch();
061 MCRIndexBrowserCache.addToCache(incomingBrowserData, index, resultList);
062 }
063 MCRIndexBrowserXmlGenerator xmlGen = new MCRIndexBrowserXmlGenerator(resultList, incomingBrowserData, config);
064 return xmlGen.getXMLContent();
065 }
066
067 /**
068 * Creates an empty xml index browser document.
069 * @return a new empty document
070 */
071 public static Document createEmptyDocument(MCRIndexBrowserIncomingData incomingBrowserData) {
072 Element rootElement = MCRIndexBrowserXmlGenerator.buildPageElement(incomingBrowserData);
073 MCRIndexBrowserXmlGenerator.buildResultsElement(rootElement, incomingBrowserData);
074 return new Document(rootElement);
075 }
076
077 public static MCRIndexBrowserIncomingData getIncomingBrowserData(HttpServletRequest request) {
078 String search = request.getParameter("search");
079 String mode = getMode(request);
080 String searchclass = request.getParameter("searchclass");
081 String fromTo = request.getParameter("fromTo");
082 String init = request.getParameter("init");
083
084 return new MCRIndexBrowserIncomingData(search, mode, searchclass, fromTo, init);
085 }
086
087 private static String getMode(HttpServletRequest request) {
088 if (request.getParameter("mode") != null && !request.getParameter("mode").trim().equals("")) {
089 return request.getParameter("mode").toLowerCase().trim();
090 } else
091 return "prefix";
092 }
093 }