001/** 002 * 003 * Copyright (c) 2014, the Railo Company Ltd. All rights reserved. 004 * 005 * This library is free software; you can redistribute it and/or 006 * modify it under the terms of the GNU Lesser General Public 007 * License as published by the Free Software Foundation; either 008 * version 2.1 of the License, or (at your option) any later version. 009 * 010 * This library is distributed in the hope that it will be useful, 011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 013 * Lesser General Public License for more details. 014 * 015 * You should have received a copy of the GNU Lesser General Public 016 * License along with this library. If not, see <http://www.gnu.org/licenses/>. 017 * 018 **/ 019package lucee.runtime.search.lucene2.highlight; 020 021import java.io.IOException; 022import java.io.StringReader; 023 024import lucee.commons.lang.StringUtil; 025 026import org.apache.lucene.analysis.Analyzer; 027import org.apache.lucene.analysis.TokenStream; 028import org.apache.lucene.search.Query; 029import org.apache.lucene.search.highlight.Highlighter; 030import org.apache.lucene.search.highlight.QueryScorer; 031import org.apache.lucene.search.highlight.SimpleHTMLFormatter; 032 033public class _Highlight { 034 035 public static String createContextSummary(Object highlighter, Analyzer analyzer, String text, int maxNumFragments,String defaultValue) throws IOException { 036 if(!(highlighter instanceof Highlighter) || analyzer==null || StringUtil.isEmpty(text)) 037 return defaultValue; 038 039 TokenStream tokenStream = analyzer.tokenStream("", new StringReader(text)); 040 return ((Highlighter)highlighter).getBestFragments(tokenStream, text, maxNumFragments, "..."); 041 } 042 043 public static Object createHighlighter(Query query,String highlightBegin,String highlightEnd) { 044 045 return new Highlighter( 046 //new SimpleHTMLFormatter("<span class=\"matching-term\">","</span>"), 047 new SimpleHTMLFormatter(highlightBegin,highlightEnd), 048 new QueryScorer(query)); 049 050 } 051 052}