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  1. Solr
  2. SOLR-758

Enhance DisMaxQParserPlugin to support full-Solr syntax and to support alternate escaping strategies.

    Details

    • Type: Improvement
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: 1.3
    • Fix Version/s: 4.9, 6.0
    • Component/s: search
    • Labels:
      None

      Description

      The DisMaxQParserPlugin has a variety of nice features; chief among them is that is uses the DisjunctionMaxQueryParser. However it imposes limitations on the syntax.

      I've enhanced the DisMax QParser plugin to use a pluggable query string re-writer (via subclass extension) instead of hard-coding the logic currently embedded within it (i.e. the escape nearly everything logic). Additionally, I've made this QParser have a notion of a "simple" syntax (the default) or non-simple in which case some of the logic in this QParser doesn't occur because it's irrelevant (phrase boosting and min-should-max in particular). As part of my work I significantly moved the code around to make it clearer and more extensible. I also chose to rename it to suggest it's role as a parser for user queries.

      Attachment to follow...

        Attachments

        1. UserQParser.java
          11 kB
          David Smiley
        2. DisMaxQParserPlugin.java
          2 kB
          David Smiley
        3. AdvancedQParserPlugin.java
          0.8 kB
          David Smiley
        4. UserQParser.java
          11 kB
          David Smiley
        5. DisMaxQParserPlugin.java
          2 kB
          David Smiley
        6. AdvancedQParserPlugin.java
          0.8 kB
          David Smiley
        7. UserQParser.java-umlauts.patch
          0.9 kB
          Simon Lachinger

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              • Assignee:
                Unassigned
                Reporter:
                dsmiley David Smiley
              • Votes:
                3 Vote for this issue
                Watchers:
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                Dates

                • Created:
                  Updated: