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  1. Lucene - Core
  2. LUCENE-556

MatchAllDocsQuery, MultiSearcher and a custom HitCollector throwing exception

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Details

    • Bug
    • Status: Closed
    • Minor
    • Resolution: Fixed
    • 1.9
    • 2.0.0
    • core/search
    • None
    • xp sp2, jdk1.5

    Description

      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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            yseeley@gmail.com Yonik Seeley
            jmwap jmwap
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              Created:
              Updated:
              Resolved: