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  1. Lucene - Core
  2. LUCENE-373

Query parts ending with a colon are handled badly

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    Details

    • Type: Bug
    • Status: Reopened
    • Priority: Minor
    • Resolution: Unresolved
    • Affects Version/s: 1.4
    • Fix Version/s: None
    • Component/s: core/queryparser
    • Labels:
    • Environment:

      Operating System: Windows 2000
      Platform: PC

    • Bugzilla Id:
      34453

      Description

      I'm using Lucene 1.4.3, running
      Query query = QueryParser.parse(queryString, "contents", new StandardAnalyzer());

      If queryString is "search title:" i.e. specifying a field name without a
      corresponding value, I get a parsing exception:

      Encountered "<EOF>" at line 1, column 8.
      Was expecting one of:
      "(" ...
      <QUOTED> ...
      <TERM> ...
      <PREFIXTERM> ...
      <WILDTERM> ...
      "[" ...
      "{" ...
      <NUMBER> ...

      If queryString is "title: search", there's no exception. However, the parsed
      query which is returned is "title:search". If queryString is "title: contents:
      text", the parsed query is "title:contents" and the "text" part is ignored
      completely. When queryString is "title: text contents:" the above exception is
      produced again.

      This seems inconsistent. Given that it's pointless searching for an empty
      string (since it has no tokens), I'd expect both "search title:" & "title:
      search" to be parsed as "search" (or, given the default field I specified,
      "contents:search"), and "title: contents: text" & "title: text contents:" to
      parse as "text" ("contents:text") i.e. parts which have no term are ignored. At
      worst I'd expect them all to throw a ParseException rather than just the ones
      with the colon at the end of the string.

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            • Assignee:
              Unassigned
              Reporter:
              ats37@hotmail.com Andrew Stevens
            • Votes:
              1 Vote for this issue
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              3 Start watching this issue

              Dates

              • Created:
                Updated: