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  1. Apache Jena
  2. JENA-294

TransformFilterEquality does not handle starting OPTIONAL well

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Details

    • Improvement
    • Status: Closed
    • Major
    • Resolution: Fixed
    • Jena 2.7.4
    • Jena 2.10.0
    • ARQ, Optimizer
    • None

    Description

      There was one other case where our tests were stuck on a very slow query execution because transformFilterEquality failed to optimize. The problem is that the optimizer gives up whenever the WHERE clause starts with an OPTIONAL clause. The reason is that the generated algebraic formula starts with a TableUnit and this is not handled correctly.

      I have attached a patch which fixes the problem

      Attachments

        1. test-filter-equality.zip
          8 kB
          Andy Seaborne
        2. patch.txt
          2 kB
          Simon Helsen
        3. patch.txt
          2 kB
          Simon Helsen
        4. manifestPatchForOptFilterEquality.txt
          0.6 kB
          Simon Helsen
        5. jena-294-afs-1.patch
          2 kB
          Andy Seaborne
        6. filter-equality-13.srj
          0.3 kB
          Simon Helsen
        7. filter-equality-13.rq
          0.1 kB
          Simon Helsen

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              Unassigned Unassigned
              shelsen Simon Helsen
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              Dates

                Created:
                Updated:
                Resolved: