Uploaded image for project: 'Apache Jena'
  1. Apache Jena
  2. JENA-111

Improving TopN optimization in case of an intermediate OpModifier

    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Minor
    • Resolution: Done
    • Affects Version/s: None
    • Fix Version/s: Jena 2.11.0
    • Component/s: ARQ
    • Labels:

      Description

      In the TopN optimization (Jena-89) it would be useful to handle also the case in which there are some other OpModifiers (I think they are the only category of Ops that can be in that position in the tree) between Slice and Order By, for example OpProject:

      (slice _1
      (project ?s ...
      (order by <condition>

      ->
      (project ?s ...
      (top 1 <condition>

        Attachments

        1. JENA-111_ARQ_r1165795.patch
          12 kB
          Paolo Castagna
        2. topk_project.patch
          2 kB
          Sara Magliacane

          Issue Links

            Activity

              People

              • Assignee:
                castagna Paolo Castagna
                Reporter:
                sara.magliacane Sara Magliacane
              • Votes:
                2 Vote for this issue
                Watchers:
                2 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved: