package org.apache.lucene.analysis.bg;
/**
* 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,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import java.io.IOException;
import java.io.Reader;
import java.io.StringReader;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.BaseTokenStreamTestCase;
import org.apache.lucene.analysis.CharArraySet;
import org.apache.lucene.analysis.KeywordMarkerFilter;
import org.apache.lucene.analysis.MockTokenizer;
import org.apache.lucene.analysis.ReusableAnalyzerBase;
import org.apache.lucene.analysis.Tokenizer;
import org.apache.lucene.analysis.KeywordTokenizer;
import org.apache.lucene.util.Version;
/**
* Test the Bulgarian Stemmer
*/
public class TestBulgarianStemmer extends BaseTokenStreamTestCase {
/**
* Test showing how masculine noun forms conflate. An example noun for each
* common (and some rare) plural pattern is listed.
*/
public void testMasculineNouns() throws IOException {
BulgarianAnalyzer a = new BulgarianAnalyzer(TEST_VERSION_CURRENT);
// -и pattern
assertAnalyzesTo(a, "град", new String[] {"град"});
assertAnalyzesTo(a, "града", new String[] {"град"});
assertAnalyzesTo(a, "градът", new String[] {"град"});
assertAnalyzesTo(a, "градове", new String[] {"град"});
assertAnalyzesTo(a, "градовете", new String[] {"град"});
// -ове pattern
assertAnalyzesTo(a, "народ", new String[] {"народ"});
assertAnalyzesTo(a, "народа", new String[] {"народ"});
assertAnalyzesTo(a, "народът", new String[] {"народ"});
assertAnalyzesTo(a, "народи", new String[] {"народ"});
assertAnalyzesTo(a, "народите", new String[] {"народ"});
assertAnalyzesTo(a, "народе", new String[] {"народ"});
// -ища pattern
assertAnalyzesTo(a, "път", new String[] {"път"});
assertAnalyzesTo(a, "пътя", new String[] {"път"});
assertAnalyzesTo(a, "пътят", new String[] {"път"});
assertAnalyzesTo(a, "пътища", new String[] {"път"});
assertAnalyzesTo(a, "пътищата", new String[] {"път"});
// -чета pattern
assertAnalyzesTo(a, "градец", new String[] {"градец"});
assertAnalyzesTo(a, "градеца", new String[] {"градец"});
assertAnalyzesTo(a, "градецът", new String[] {"градец"});
/* note the below forms conflate with each other, but not the rest */
assertAnalyzesTo(a, "градовце", new String[] {"градовц"});
assertAnalyzesTo(a, "градовцете", new String[] {"градовц"});
// -овци pattern
assertAnalyzesTo(a, "дядо", new String[] {"дяд"});
assertAnalyzesTo(a, "дядото", new String[] {"дяд"});
assertAnalyzesTo(a, "дядовци", new String[] {"дяд"});
assertAnalyzesTo(a, "дядовците", new String[] {"дяд"});
// -е pattern
assertAnalyzesTo(a, "мъж", new String[] {"мъж"});
assertAnalyzesTo(a, "мъжа", new String[] {"мъж"});
assertAnalyzesTo(a, "мъже", new String[] {"мъж"});
assertAnalyzesTo(a, "мъжете", new String[] {"мъж"});
assertAnalyzesTo(a, "мъжо", new String[] {"мъж"});
/* word is too short, will not remove -ът */
assertAnalyzesTo(a, "мъжът", new String[] {"мъжът"});
// -а pattern
assertAnalyzesTo(a, "крак", new String[] {"крак"});
assertAnalyzesTo(a, "крака", new String[] {"крак"});
assertAnalyzesTo(a, "кракът", new String[] {"крак"});
assertAnalyzesTo(a, "краката", new String[] {"крак"});
// брат
assertAnalyzesTo(a, "брат", new String[] {"брат"});
assertAnalyzesTo(a, "брата", new String[] {"брат"});
assertAnalyzesTo(a, "братът", new String[] {"брат"});
assertAnalyzesTo(a, "братя", new String[] {"брат"});
assertAnalyzesTo(a, "братята", new String[] {"брат"});
assertAnalyzesTo(a, "брате", new String[] {"брат"});
}
/**
* Test showing how feminine noun forms conflate
*/
public void testFeminineNouns() throws IOException {
BulgarianAnalyzer a = new BulgarianAnalyzer(TEST_VERSION_CURRENT);
assertAnalyzesTo(a, "вест", new String[] {"вест"});
assertAnalyzesTo(a, "вестта", new String[] {"вест"});
assertAnalyzesTo(a, "вести", new String[] {"вест"});
assertAnalyzesTo(a, "вестите", new String[] {"вест"});
}
/**
* Test showing how neuter noun forms conflate an example noun for each common
* plural pattern is listed
*/
public void testNeuterNouns() throws IOException {
BulgarianAnalyzer a = new BulgarianAnalyzer(TEST_VERSION_CURRENT);
// -а pattern
assertAnalyzesTo(a, "дърво", new String[] {"дърв"});
assertAnalyzesTo(a, "дървото", new String[] {"дърв"});
assertAnalyzesTo(a, "дърва", new String[] {"дърв"});
assertAnalyzesTo(a, "дървета", new String[] {"дърв"});
assertAnalyzesTo(a, "дървата", new String[] {"дърв"});
assertAnalyzesTo(a, "дърветата", new String[] {"дърв"});
// -та pattern
assertAnalyzesTo(a, "море", new String[] {"мор"});
assertAnalyzesTo(a, "морето", new String[] {"мор"});
assertAnalyzesTo(a, "морета", new String[] {"мор"});
assertAnalyzesTo(a, "моретата", new String[] {"мор"});
// -я pattern
assertAnalyzesTo(a, "изключение", new String[] {"изключени"});
assertAnalyzesTo(a, "изключението", new String[] {"изключени"});
assertAnalyzesTo(a, "изключенията", new String[] {"изключени"});
/* note the below form in this example does not conflate with the rest */
assertAnalyzesTo(a, "изключения", new String[] {"изключн"});
}
/**
* Test showing how adjectival forms conflate
*/
public void testAdjectives() throws IOException {
BulgarianAnalyzer a = new BulgarianAnalyzer(TEST_VERSION_CURRENT);
assertAnalyzesTo(a, "красив", new String[] {"красив"});
assertAnalyzesTo(a, "красивия", new String[] {"красив"});
assertAnalyzesTo(a, "красивият", new String[] {"красив"});
assertAnalyzesTo(a, "красива", new String[] {"красив"});
assertAnalyzesTo(a, "красивата", new String[] {"красив"});
assertAnalyzesTo(a, "красиво", new String[] {"красив"});
assertAnalyzesTo(a, "красивото", new String[] {"красив"});
assertAnalyzesTo(a, "красиви", new String[] {"красив"});
assertAnalyzesTo(a, "красивите", new String[] {"красив"});
}
/**
* Test some exceptional rules, implemented as rewrites.
*/
public void testExceptions() throws IOException {
BulgarianAnalyzer a = new BulgarianAnalyzer(TEST_VERSION_CURRENT);
// ци -> к
assertAnalyzesTo(a, "собственик", new String[] {"собственик"});
assertAnalyzesTo(a, "собственика", new String[] {"собственик"});
assertAnalyzesTo(a, "собственикът", new String[] {"собственик"});
assertAnalyzesTo(a, "собственици", new String[] {"собственик"});
assertAnalyzesTo(a, "собствениците", new String[] {"собственик"});
// зи -> г
assertAnalyzesTo(a, "подлог", new String[] {"подлог"});
assertAnalyzesTo(a, "подлога", new String[] {"подлог"});
assertAnalyzesTo(a, "подлогът", new String[] {"подлог"});
assertAnalyzesTo(a, "подлози", new String[] {"подлог"});
assertAnalyzesTo(a, "подлозите", new String[] {"подлог"});
// си -> х
assertAnalyzesTo(a, "кожух", new String[] {"кожух"});
assertAnalyzesTo(a, "кожуха", new String[] {"кожух"});
assertAnalyzesTo(a, "кожухът", new String[] {"кожух"});
assertAnalyzesTo(a, "кожуси", new String[] {"кожух"});
assertAnalyzesTo(a, "кожусите", new String[] {"кожух"});
// ъ deletion
assertAnalyzesTo(a, "център", new String[] {"центр"});
assertAnalyzesTo(a, "центъра", new String[] {"центр"});
assertAnalyzesTo(a, "центърът", new String[] {"центр"});
assertAnalyzesTo(a, "центрове", new String[] {"центр"});
assertAnalyzesTo(a, "центровете", new String[] {"центр"});
// е*и -> я*
assertAnalyzesTo(a, "промяна", new String[] {"промян"});
assertAnalyzesTo(a, "промяната", new String[] {"промян"});
assertAnalyzesTo(a, "промени", new String[] {"промян"});
assertAnalyzesTo(a, "промените", new String[] {"промян"});
// ен -> н
assertAnalyzesTo(a, "песен", new String[] {"песн"});
assertAnalyzesTo(a, "песента", new String[] {"песн"});
assertAnalyzesTo(a, "песни", new String[] {"песн"});
assertAnalyzesTo(a, "песните", new String[] {"песн"});
// -еве -> й
// note: this is the only word i think this rule works for.
// most -еве pluralized nouns are monosyllabic,
// and the stemmer requires length > 6...
assertAnalyzesTo(a, "строй", new String[] {"строй"});
assertAnalyzesTo(a, "строеве", new String[] {"строй"});
assertAnalyzesTo(a, "строевете", new String[] {"строй"});
/* note the below forms conflate with each other, but not the rest */
assertAnalyzesTo(a, "строя", new String[] {"стр"});
assertAnalyzesTo(a, "строят", new String[] {"стр"});
}
public void testWithKeywordAttribute() throws IOException {
CharArraySet set = new CharArraySet(Version.LUCENE_31, 1, true);
set.add("строеве");
MockTokenizer tokenStream = new MockTokenizer(new StringReader("строевете строеве"), MockTokenizer.WHITESPACE, false);
BulgarianStemFilter filter = new BulgarianStemFilter(
new KeywordMarkerFilter(tokenStream, set));
assertTokenStreamContents(filter, new String[] { "строй", "строеве" });
}
public void testEmptyTerm() throws IOException {
Analyzer a = new ReusableAnalyzerBase() {
@Override
protected TokenStreamComponents createComponents(String fieldName, Reader reader) {
Tokenizer tokenizer = new KeywordTokenizer(reader);
return new TokenStreamComponents(tokenizer, new BulgarianStemFilter(tokenizer));
}
};
checkOneTermReuse(a, "", "");
}
}