| /* |
| * 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. |
| */ |
| package org.apache.lucene.analysis.ja; |
| |
| |
| import java.io.IOException; |
| |
| import org.apache.lucene.analysis.Analyzer; |
| import org.apache.lucene.analysis.BaseTokenStreamTestCase; |
| import org.apache.lucene.analysis.CharArraySet; |
| import org.apache.lucene.analysis.MockTokenizer; |
| import org.apache.lucene.analysis.TokenStream; |
| import org.apache.lucene.analysis.Tokenizer; |
| import org.apache.lucene.analysis.core.KeywordTokenizer; |
| import org.apache.lucene.analysis.miscellaneous.SetKeywordMarkerFilter; |
| |
| /** |
| * Tests for {@link JapaneseKatakanaStemFilter} |
| */ |
| public class TestJapaneseKatakanaStemFilter extends BaseTokenStreamTestCase { |
| private Analyzer analyzer; |
| |
| @Override |
| public void setUp() throws Exception { |
| super.setUp(); |
| analyzer = new Analyzer() { |
| @Override |
| protected TokenStreamComponents createComponents(String fieldName) { |
| // Use a MockTokenizer here since this filter doesn't really depend on Kuromoji |
| Tokenizer source = new MockTokenizer(MockTokenizer.WHITESPACE, false); |
| return new TokenStreamComponents(source, new JapaneseKatakanaStemFilter(source)); |
| } |
| }; |
| } |
| |
| @Override |
| public void tearDown() throws Exception { |
| analyzer.close(); |
| super.tearDown(); |
| } |
| |
| /** |
| * Test a few common katakana spelling variations. |
| * <p> |
| * English translations are as follows: |
| * <ul> |
| * <li>copy</li> |
| * <li>coffee</li> |
| * <li>taxi</li> |
| * <li>party</li> |
| * <li>party (without long sound)</li> |
| * <li>center</li> |
| * </ul> |
| * Note that we remove a long sound in the case of "coffee" that is required. |
| */ |
| public void testStemVariants() throws IOException { |
| assertAnalyzesTo(analyzer, "コピー コーヒー タクシー パーティー パーティ センター", |
| new String[] { "コピー", "コーヒ", "タクシ", "パーティ", "パーティ", "センタ" }, |
| new int[] { 0, 4, 9, 14, 20, 25 }, |
| new int[] { 3, 8, 13, 19, 24, 29 }); |
| } |
| |
| public void testKeyword() throws IOException { |
| final CharArraySet exclusionSet = new CharArraySet(asSet("コーヒー"), false); |
| Analyzer a = new Analyzer() { |
| @Override |
| protected TokenStreamComponents createComponents(String fieldName) { |
| Tokenizer source = new MockTokenizer(MockTokenizer.WHITESPACE, false); |
| TokenStream sink = new SetKeywordMarkerFilter(source, exclusionSet); |
| return new TokenStreamComponents(source, new JapaneseKatakanaStemFilter(sink)); |
| } |
| }; |
| checkOneTerm(a, "コーヒー", "コーヒー"); |
| a.close(); |
| } |
| |
| public void testUnsupportedHalfWidthVariants() throws IOException { |
| // The below result is expected since only full-width katakana is supported |
| assertAnalyzesTo(analyzer, "タクシー", new String[] { "タクシー" }); |
| } |
| |
| public void testRandomData() throws IOException { |
| checkRandomData(random(), analyzer, 200 * RANDOM_MULTIPLIER); |
| } |
| |
| public void testEmptyTerm() throws IOException { |
| Analyzer a = new Analyzer() { |
| @Override |
| protected TokenStreamComponents createComponents(String fieldName) { |
| Tokenizer tokenizer = new KeywordTokenizer(); |
| return new TokenStreamComponents(tokenizer, new JapaneseKatakanaStemFilter(tokenizer)); |
| } |
| }; |
| checkOneTerm(a, "", ""); |
| a.close(); |
| } |
| } |