com.stimulus.archiva.search.ArchivaAnalyzer.java Source code

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Here is the source code for com.stimulus.archiva.search.ArchivaAnalyzer.java

Source

/* Copyright (C) 2005-2007 Jamie Angus Band 
 * MailArchiva Open Source Edition Copyright (c) 2005-2007 Jamie Angus Band
 * This program is free software; you can redistribute it and/or modify it under the terms of
 * the GNU General Public License as published by the Free Software Foundation; either version
 * 2 of the License, or (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with this program;
 * if not, see http://www.gnu.org/licenses or write to the Free Software Foundation,Inc., 51
 * Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
 */

package com.stimulus.archiva.search;

import org.apache.lucene.analysis.*;
import java.io.*;
import java.util.*;
import org.apache.lucene.analysis.standard.*;

public class ArchivaAnalyzer extends Analyzer {

    /*
     * An array containing some common words that
     * are not usually useful for searching.
     */
    private static final String[] STOP_WORDS = { "a", "and", "are", "as", "at", "be", "but", "by", "for", "if",
            "in", "into", "is", "it", "no", "not", "of", "on", "or", "s", "such", "t", "that", "the", "their",
            "then", "there", "these", "they", "this", "to", "was", "will", "with" };

    /*
     * Stop table
     */
    final static private Set stopTable = StopFilter.makeStopSet(STOP_WORDS);

    /*
     * Create a token stream for this analyzer.
     */
    @Override
    public final TokenStream tokenStream(String fieldName, final Reader reader) {

        TokenStream result = new StandardTokenizer(reader);
        result = new StandardFilter(result);
        result = new LowerCaseFilter(result);
        result = new StopFilter(result, stopTable);
        result = new PorterStemFilter(result);
        return result;
    }

}