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  1. Lucene - Core
  2. LUCENE-3257

Nested Field Collapsing

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    Details

    • Type: New Feature
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: modules/grouping
    • Labels:
      None
    • Lucene Fields:
      New

      Description

      Currently specifying grouping on multiple fields returns multiple datasets.

      It would be nice if Solr supported cascading / nested grouping by applying the first group over the entire result set, the next over each group and so forth and so forth.

      Even if limited to supporting nesting grouping 2 levels deep would cover alot of use cases.

      group.field=location&group.field=type

      -Location X
      ---Type 1
      -----documents
      ---Type 2
      ----documents
      -Location Y
      ---Type 1
      ----documents
      ---Type 2
      ----documents

      instead of
      -Location X

      • documents
        -Location Y
        --documents

      -Type 1
      --documents
      -Type2
      --documents

      See also https://issues.apache.org/jira/browse/SOLR-2553

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            • Assignee:
              Unassigned
              Reporter:
              mpdreamz Martijn Laarman
            • Votes:
              6 Vote for this issue
              Watchers:
              6 Start watching this issue

              Dates

              • Created:
                Updated: