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POHow can I index/search + and - symbol in lucene?
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  1. POHow can I index/search + and - symbol in lucene?
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    copied!<p>I need to search the word "I+D", and my analyzer don't work with <code>+</code> (plus) and <code>-</code> (minus) symbols. How can I search it?</p> <p>My personal analyzer:</p> <pre><code> /** * Copyright (c) 2006 Hugo Zaragoza and Jose R. P�rez-Ag�era * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of copyright holders nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ import java.io.BufferedReader; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.Reader; import java.util.ArrayList; import java.util.Set; import org.apache.lucene.analysis.Analyzer; import org.apache.lucene.analysis.LowerCaseFilter; import org.apache.lucene.analysis.StopFilter; import org.apache.lucene.analysis.TokenStream; import org.apache.lucene.analysis.standard.StandardFilter; import org.apache.lucene.analysis.standard.StandardTokenizer; /** * Spanish Lucene analyzer * @author Hugo Zaragoza and Jose R. P�rez-Ag�era */ public class SpanishAnalyzer extends Analyzer { private Set stopSet; /** * Creates the Lucene Spanish Analyzer * @throws IOException */ public SpanishAnalyzer() throws IOException { super(); stopSet = StopFilter.makeStopSet(loadStopWords()); } /** Constructs a {@link StandardTokenizer} filtered by a {@link StandardFilter}, a {@link LowerCaseFilter} and a {@link StopFilter}. */ public TokenStream tokenStream(String fieldName, Reader reader) { TokenStream result = new StandardTokenizer(reader); result = new StandardFilter(result); result = new LowerCaseFilter(result); result = new StopFilter(result, stopSet); result = new SpanishStemmerFilter(result); return result; } /** * Loads the spanish stop-words list * @throws IOException */ private static String[] loadStopWords() throws IOException { InputStream inputStream = new FileInputStream("stopwords-spanish.txt"); //InputStream inputStream = new FileInputStream("/home/becario/Escritorio/CVTKAxel/lib/stopwords-spanish.txt"); Reader reader = new InputStreamReader(inputStream); BufferedReader br = new BufferedReader(reader); String line = br.readLine(); ArrayList&lt;String&gt; list = new ArrayList&lt;String&gt;(); while (line != null) { list.add(line.trim()); line = br.readLine(); } String stopWords[] = new String[list.toArray().length]; for (int i = 0; i &lt; list.toArray().length; i++) { stopWords[i] = (String) list.get(i); } return stopWords; } } </code></pre>
 

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