Apache Jena
  1. Apache Jena
  2. JENA-111

Improving TopN optimization in case of an intermediate OpModifier

    Details

    • Type: Improvement Improvement
    • Status: Closed
    • Priority: Minor 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>

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

        Issue Links

          Activity

            People

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

              Dates

              • Created:
                Updated:
                Resolved:

                Development