lia.analysis.codec.MetaphoneAnalyzerTest.java Source code

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Here is the source code for lia.analysis.codec.MetaphoneAnalyzerTest.java

Source

package lia.analysis.codec;

/**
 * Copyright Manning Publications Co.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific lan      
*/

import junit.framework.TestCase;

import lia.analysis.AnalyzerUtils;

import org.apache.lucene.util.Version;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.store.RAMDirectory;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.TopScoreDocCollector;
import org.apache.lucene.search.TopDocs;
import org.apache.lucene.queryParser.QueryParser;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.tokenattributes.TermAttribute;
import org.apache.lucene.analysis.tokenattributes.PositionIncrementAttribute;

import java.io.IOException;
import java.io.StringReader;

// From chapter 4
public class MetaphoneAnalyzerTest extends TestCase {
    public void testKoolKat() throws Exception {
        RAMDirectory directory = new RAMDirectory();
        Analyzer analyzer = new MetaphoneReplacementAnalyzer();

        IndexWriter writer = new IndexWriter(directory, analyzer, true, IndexWriter.MaxFieldLength.UNLIMITED);

        Document doc = new Document();
        doc.add(new Field("contents", //#A
                "cool cat", Field.Store.YES, Field.Index.ANALYZED));
        writer.addDocument(doc);
        writer.close();

        IndexSearcher searcher = new IndexSearcher(directory);

        Query query = new QueryParser(Version.LUCENE_30, //#B
                "contents", analyzer) //#B
                        .parse("kool kat"); //#B

        TopDocs hits = searcher.search(query, 1);
        assertEquals(1, hits.totalHits); //#C
        int docID = hits.scoreDocs[0].doc;
        doc = searcher.doc(docID);
        assertEquals("cool cat", doc.get("contents")); //#D

        searcher.close();
    }

    /*
      #A Index document
      #B Parse query text
      #C Verify match
      #D Retrieve original value
    */

    public static void main(String[] args) throws IOException {
        MetaphoneReplacementAnalyzer analyzer = new MetaphoneReplacementAnalyzer();
        AnalyzerUtils.displayTokens(analyzer, "The quick brown fox jumped over the lazy dog");

        System.out.println("");
        AnalyzerUtils.displayTokens(analyzer, "Tha quik brown phox jumpd ovvar tha lazi dag");
    }
}