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https://issues.apache.org/jira/browse/LUCENENET-596?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Khindikaynen Aleksey closed LUCENENET-596.
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Resolution: Not A Problem
> QueryParser produces a wrong query if KeywordRepeatFilter is used in analyzer
> -----------------------------------------------------------------------------
>
> Key: LUCENENET-596
> URL: https://issues.apache.org/jira/browse/LUCENENET-596
> Project: Lucene.Net
> Issue Type: Bug
> Components: Lucene.Net.Analysis.Common
> Affects Versions: Lucene.Net 4.8.0
> Reporter: Khindikaynen Aleksey
>
> Below is a code sample illustrating how to reproduce the issue:
> {code:java}
> var query = "+FieldName:Value_0";
> var parser = new QueryParser(LuceneVersion.LUCENE_48,
> "FieldName", new CustomAnalyzer());
> var res = parser.Parse(query);
> class CustomAnalyzer : Analyzer
> {
> protected override TokenStreamComponents CreateComponents(string
> fieldName, TextReader reader)
> {
> var tokenizer = new
> LetterOrDigitTokenizer(LuceneVersion.LUCENE_48, reader);
>
> TokenStream stream = new StandardFilter(LuceneVersion.LUCENE_48,
> tokenizer);
>
> stream = new KeywordRepeatFilter(stream);
>
> return new TokenStreamComponents(tokenizer, stream);
> }
> }
> class LetterOrDigitTokenizer : CharTokenizer
> {
> public LetterOrDigitTokenizer(LuceneVersion matchVersion, TextReader
> input) : base(matchVersion, input)
> {
> }
> protected override bool IsTokenChar(int c)
> {
> return char.IsLetterOrDigit((char)c);
> }
> }
> {code}
> Result query is different in 3.0.3 and 4.8 versions:
> Lucene 3.0.3
> +FieldName:"(value value) 0"
> Lucene 4.8 beta 4
> +((FieldName:value FieldName:valu) FieldName:0)
> So if we have a document with FieldName == "0" (without the word "value"), it
> would be found with Lucene 4.8 anyway.
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