| /* |
| * 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.io.IOException; |
| import java.util.Locale; |
| import java.util.regex.Pattern; |
| import org.apache.lucene.analysis.BaseTokenStreamTestCase; |
| import org.apache.lucene.analysis.CharArraySet; |
| import org.apache.lucene.analysis.TokenFilter; |
| import org.apache.lucene.analysis.TokenStream; |
| import org.apache.lucene.analysis.tokenattributes.CharTermAttribute; |
| import org.apache.lucene.analysis.tokenattributes.KeywordAttribute; |
| import org.junit.Test; |
| |
| /** Testcase for {@link KeywordMarkerFilter} */ |
| public class TestKeywordMarkerFilter extends BaseTokenStreamTestCase { |
| |
| @Test |
| public void testSetFilterIncrementToken() throws IOException { |
| CharArraySet set = new CharArraySet(5, true); |
| set.add("lucenefox"); |
| String[] output = new String[] {"the", "quick", "brown", "LuceneFox", "jumps"}; |
| assertTokenStreamContents( |
| new LowerCaseFilterMock( |
| new SetKeywordMarkerFilter( |
| whitespaceMockTokenizer("The quIck browN LuceneFox Jumps"), set)), |
| output); |
| CharArraySet mixedCaseSet = new CharArraySet(asSet("LuceneFox"), false); |
| assertTokenStreamContents( |
| new LowerCaseFilterMock( |
| new SetKeywordMarkerFilter( |
| whitespaceMockTokenizer("The quIck browN LuceneFox Jumps"), mixedCaseSet)), |
| output); |
| CharArraySet set2 = set; |
| assertTokenStreamContents( |
| new LowerCaseFilterMock( |
| new SetKeywordMarkerFilter( |
| whitespaceMockTokenizer("The quIck browN LuceneFox Jumps"), set2)), |
| output); |
| } |
| |
| @Test |
| public void testPatternFilterIncrementToken() throws IOException { |
| String[] output = new String[] {"the", "quick", "brown", "LuceneFox", "jumps"}; |
| assertTokenStreamContents( |
| new LowerCaseFilterMock( |
| new PatternKeywordMarkerFilter( |
| whitespaceMockTokenizer("The quIck browN LuceneFox Jumps"), |
| Pattern.compile("[a-zA-Z]+[fF]ox"))), |
| output); |
| |
| output = new String[] {"the", "quick", "brown", "lucenefox", "jumps"}; |
| |
| assertTokenStreamContents( |
| new LowerCaseFilterMock( |
| new PatternKeywordMarkerFilter( |
| whitespaceMockTokenizer("The quIck browN LuceneFox Jumps"), |
| Pattern.compile("[a-zA-Z]+[f]ox"))), |
| output); |
| } |
| |
| // LUCENE-2901 |
| public void testComposition() throws Exception { |
| TokenStream ts = |
| new LowerCaseFilterMock( |
| new SetKeywordMarkerFilter( |
| new SetKeywordMarkerFilter( |
| whitespaceMockTokenizer("Dogs Trees Birds Houses"), |
| new CharArraySet(asSet("Birds", "Houses"), false)), |
| new CharArraySet(asSet("Dogs", "Trees"), false))); |
| |
| assertTokenStreamContents(ts, new String[] {"Dogs", "Trees", "Birds", "Houses"}); |
| |
| ts = |
| new LowerCaseFilterMock( |
| new PatternKeywordMarkerFilter( |
| new PatternKeywordMarkerFilter( |
| whitespaceMockTokenizer("Dogs Trees Birds Houses"), |
| Pattern.compile("Birds|Houses")), |
| Pattern.compile("Dogs|Trees"))); |
| |
| assertTokenStreamContents(ts, new String[] {"Dogs", "Trees", "Birds", "Houses"}); |
| |
| ts = |
| new LowerCaseFilterMock( |
| new SetKeywordMarkerFilter( |
| new PatternKeywordMarkerFilter( |
| whitespaceMockTokenizer("Dogs Trees Birds Houses"), |
| Pattern.compile("Birds|Houses")), |
| new CharArraySet(asSet("Dogs", "Trees"), false))); |
| |
| assertTokenStreamContents(ts, new String[] {"Dogs", "Trees", "Birds", "Houses"}); |
| } |
| |
| public static final class LowerCaseFilterMock extends TokenFilter { |
| |
| private final CharTermAttribute termAtt = addAttribute(CharTermAttribute.class); |
| private final KeywordAttribute keywordAttr = addAttribute(KeywordAttribute.class); |
| |
| public LowerCaseFilterMock(TokenStream in) { |
| super(in); |
| } |
| |
| @Override |
| public boolean incrementToken() throws IOException { |
| if (input.incrementToken()) { |
| if (!keywordAttr.isKeyword()) { |
| final String term = termAtt.toString().toLowerCase(Locale.ROOT); |
| termAtt.setEmpty().append(term); |
| } |
| return true; |
| } |
| return false; |
| } |
| } |
| } |