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From "Nattapong Sirilappanich (JIRA)" <j...@apache.org>
Subject [jira] [Created] (LUCENE-4176) Can not produce proper collation key for ICUCollatedTermAttributeImp
Date Thu, 28 Jun 2012 11:51:46 GMT
Nattapong Sirilappanich created LUCENE-4176:
-----------------------------------------------

             Summary: 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/analysis
    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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