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Lucene example source code file (TestHindiStemmer.java)

This example Lucene source code file (TestHindiStemmer.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Lucene tags/keywords

basetokenstreamtestcase, hindistemfilter, io, ioexception, ioexception, mocktokenizer, mocktokenizer, string, string, stringreader, testhindistemmer, tokenfilter, tokenfilter, tokenizer

The Lucene TestHindiStemmer.java source code

package org.apache.lucene.analysis.hi;

 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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,
 * See the License for the specific language governing permissions and
 * limitations under the License.

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

import org.apache.lucene.analysis.BaseTokenStreamTestCase;
import org.apache.lucene.analysis.MockTokenizer;
import org.apache.lucene.analysis.TokenFilter;
import org.apache.lucene.analysis.Tokenizer;

 * Test HindiStemmer
public class TestHindiStemmer extends BaseTokenStreamTestCase {
   * Test masc noun inflections
  public void testMasculineNouns() throws IOException {
    check("लडका", "लडक");
    check("लडके", "लडक");
    check("लडकों", "लडक");
    check("गुरु", "गुर");
    check("गुरुओं", "गुर");
    check("दोस्त", "दोस्त");
    check("दोस्तों", "दोस्त");
   * Test feminine noun inflections
  public void testFeminineNouns() throws IOException {
    check("लडकी", "लडक");
    check("लडकियों", "लडक");
    check("किताब", "किताब");
    check("किताबें", "किताब");
    check("किताबों", "किताब");
    check("आध्यापीका", "आध्यापीक");
    check("आध्यापीकाएं", "आध्यापीक");
    check("आध्यापीकाओं", "आध्यापीक");
   * Test some verb forms
  public void testVerbs() throws IOException {
    check("खाना", "खा");
    check("खाता", "खा");
    check("खाती", "खा");
    check("खा", "खा");
   * From the paper: since the suffix list for verbs includes AI, awA and anI,
   * additional suffixes had to be added to the list for noun/adjectives
   * ending with these endings.
  public void testExceptions() throws IOException {
    check("कठिनाइयां", "कठिन");
    check("कठिन", "कठिन");
  private void check(String input, String output) throws IOException {
    Tokenizer tokenizer = new MockTokenizer(new StringReader(input), MockTokenizer.WHITESPACE, false);
    TokenFilter tf = new HindiStemFilter(tokenizer);
    assertTokenStreamContents(tf, new String[] { output });

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