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From "jm (JIRA)" <j...@apache.org>
Subject [jira] Created: (LUCENE-556) MatchAllDocsQuery, MultiSearcher and a custom HitCollector throwing exception
Date Wed, 26 Apr 2006 15:38:02 GMT
MatchAllDocsQuery, MultiSearcher and a custom HitCollector throwing exception
-----------------------------------------------------------------------------

         Key: LUCENE-556
         URL: http://issues.apache.org/jira/browse/LUCENE-556
     Project: Lucene - Java
        Type: Bug

  Components: Search  
    Versions: 1.9    
 Environment: xp sp2, jdk1.5
    Reporter: jm
    Priority: Minor


I have encountered an issue with lucene1.9.1. It involves MatchAllDocsQuery, MultiSearcher
and a custom HitCollector. The following code throws  java.lang.UnsupportedOperationException.

If I remove the MatchAllDocsQuery  condition (comment whole //1 block), or if I dont use the
custom hitcollector (ms.search(mbq); instead of ms.search(mbq, allcoll);) the exception goes
away. By stepping into the source I can see it seems due to MatchAllDocsQuery no implementing
extractTerms()....


           Searcher searcher = new
IndexSearcher("c:\\projects\\mig\\runtime\\index\\01Aug16\\");
           Searchable[] indexes = new IndexSearcher[1];
           indexes[0] = searcher;
           MultiSearcher ms = new MultiSearcher(indexes);

           AllCollector allcoll = new AllCollector(ms);

           BooleanQuery mbq = new BooleanQuery();
           mbq.add(new TermQuery(new Term("body", "value1")),
BooleanClause.Occur.MUST_NOT);
// 1
           MatchAllDocsQuery alld = new MatchAllDocsQuery();
           mbq.add(alld, BooleanClause.Occur.MUST);
//

           System.out.println("Query: " + mbq.toString());

           // 2
           ms.search(mbq, allcoll);
           //ms.search(mbq);

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