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https://issues.apache.org/jira/browse/LUCENE-4176?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13403038#comment-13403038
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Robert Muir commented on LUCENE-4176:
-------------------------------------
Thanks for reporting this: the bug is actually AnalyzingQueryParser. it should
not consume with CharTermAttribute.toString(), instead it should just consume
the bytes.
> Can not produce proper collation key for ICUCollatedTermAttributeImp
> --------------------------------------------------------------------
>
> Key: LUCENE-4176
> URL: https://issues.apache.org/jira/browse/LUCENE-4176
> Project: Lucene - Java
> Issue Type: Bug
> Components: modules/queryparser
> Affects Versions: 5.0
> Reporter: Nattapong Sirilappanich
>
> org.apache.lucene.collation.tokenattributes.ICUCollatedTermAttributeImpl
> return a hash of collation key's byte.
> The given hash value produce incorrect comparison result.
> The source code below return 1 for Lucene 3.6.
> The code here return 0.
> Code to reproduce:
> IndexWriter writer = new IndexWriter(ramDir, conf);
> Document doc = new Document();
> FieldType fieldType = new FieldType();
> fieldType.setIndexed(true);
> fieldType.setStored(true);
> Field field = new Field("content","เข", fieldType);
> doc.add(field);
> writer.addDocument(doc);
> writer.close();
> IndexSearcher is = new IndexSearcher(DirectoryReader.open(ramDir));
> QueryParser qp = new AnalyzingQueryParser(Version.LUCENE_50,"content",
> analyzer);
> ScoreDoc[] result = is.search(qp.parse("[\u0e01 TO \u0e03]"),
> null,1000).scoreDocs;
> System.out.println(result.length);
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