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https://issues.apache.org/jira/browse/LUCENE-7704?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael McCandless resolved LUCENE-7704.
----------------------------------------
Resolution: Fixed
Fix Version/s: 6.5.0
master (7.0)
> SysnonymGraphFilter doesn't respect ignoreCase parameter
> --------------------------------------------------------
>
> Key: LUCENE-7704
> URL: https://issues.apache.org/jira/browse/LUCENE-7704
> Project: Lucene - Core
> Issue Type: Bug
> Components: modules/analysis
> Affects Versions: 6.4.1
> Reporter: Sebastian Yonekura Baeza
> Priority: Minor
> Fix For: master (7.0), 6.5.0
>
> Attachments: LUCENE-7704.patch
>
>
> Hi, it seems that SynonymGraphFilter doesn't respect ignoreCase parameter. In
> particular this test doesn't pass:
> {code:title=UppercaseSynonymMapTest.java|borderStyle=solid}
> package com.mapcity.suggest.lucene;
> import org.apache.lucene.analysis.Analyzer;
> import org.apache.lucene.analysis.TokenStream;
> import org.apache.lucene.analysis.Tokenizer;
> import org.apache.lucene.analysis.core.WhitespaceTokenizer;
> import org.apache.lucene.analysis.synonym.SynonymGraphFilter;
> import org.apache.lucene.analysis.synonym.SynonymMap;
> import org.apache.lucene.util.CharsRef;
> import org.apache.lucene.util.CharsRefBuilder;
> import org.junit.Test;
> import java.io.IOException;
> import static
> org.apache.lucene.analysis.BaseTokenStreamTestCase.assertTokenStreamContents;
> /**
> * @author Sebastian Yonekura
> * Created on 22-02-17
> */
> public class UppercaseSynonymMapTest {
> @Test
> public void analyzerTest01() throws IOException {
> // This passes
> testAssertMapping("word", "synonym");
> // this one not
> testAssertMapping("word".toUpperCase(), "synonym");
> }
> private void testAssertMapping(String inputString, String outputString)
> throws IOException {
> SynonymMap.Builder builder = new SynonymMap.Builder(false);
> CharsRef input = SynonymMap.Builder.join(inputString.split(" "), new
> CharsRefBuilder());
> CharsRef output = SynonymMap.Builder.join(outputString.split(" "),
> new CharsRefBuilder());
> builder.add(input, output, true);
> Analyzer analyzer = new CustomAnalyzer(builder.build());
> TokenStream tokenStream = analyzer.tokenStream("field", inputString);
> assertTokenStreamContents(tokenStream, new String[]{
> outputString, inputString
> });
> }
> static class CustomAnalyzer extends Analyzer {
> private SynonymMap synonymMap;
> CustomAnalyzer(SynonymMap synonymMap) {
> this.synonymMap = synonymMap;
> }
> @Override
> protected TokenStreamComponents createComponents(String s) {
> Tokenizer tokenizer = new WhitespaceTokenizer();
> TokenStream tokenStream = new SynonymGraphFilter(tokenizer,
> synonymMap, true); // Ignore case True
> return new TokenStreamComponents(tokenizer, tokenStream);
> }
> }
> }
> {code}
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