| /* |
| * 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.miscellaneous; |
| |
| import java.util.HashSet; |
| import java.util.Set; |
| 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; |
| |
| /** Test {@link KeepWordFilter} */ |
| public class TestKeepWordFilter extends BaseTokenStreamTestCase { |
| |
| public void testStopAndGo() throws Exception { |
| Set<String> words = new HashSet<>(); |
| words.add("aaa"); |
| words.add("bbb"); |
| |
| String input = "xxx yyy aaa zzz BBB ccc ddd EEE"; |
| |
| // Test Stopwords |
| TokenStream stream = whitespaceMockTokenizer(input); |
| stream = new KeepWordFilter(stream, new CharArraySet(words, true)); |
| assertTokenStreamContents(stream, new String[] {"aaa", "BBB"}, new int[] {3, 2}); |
| |
| // Now force case |
| stream = whitespaceMockTokenizer(input); |
| stream = new KeepWordFilter(stream, new CharArraySet(words, false)); |
| assertTokenStreamContents(stream, new String[] {"aaa"}, new int[] {3}); |
| } |
| |
| /** blast some random strings through the analyzer */ |
| public void testRandomStrings() throws Exception { |
| final Set<String> words = new HashSet<>(); |
| words.add("a"); |
| words.add("b"); |
| |
| Analyzer a = |
| new Analyzer() { |
| |
| @Override |
| protected TokenStreamComponents createComponents(String fieldName) { |
| Tokenizer tokenizer = new MockTokenizer(MockTokenizer.WHITESPACE, false); |
| TokenStream stream = new KeepWordFilter(tokenizer, new CharArraySet(words, true)); |
| return new TokenStreamComponents(tokenizer, stream); |
| } |
| }; |
| |
| checkRandomData(random(), a, 200 * RANDOM_MULTIPLIER); |
| a.close(); |
| } |
| } |