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  1. Pig
  2. PIG-1770

matches clause problem with chars that have special meaning in dk.brics - #, @ ..

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 0.8.0
    • Fix Version/s: 0.8.1
    • Component/s: impl
    • Labels:
      None

      Description

      When special chars #, @ , and the 'optional' patterns described here - http://www.brics.dk/automaton/doc/dk/brics/automaton/RegExp.html#RegExp%28java.lang.String%29 are used , the regex match fails to work.

      This is related to PIG-965.

      Example and workaround are as follows -

      grunt> cat t.txt                           
      asd#asdf
      zxcasdf
      2#asdf
      
      grunt> l = load 't.txt' as (a : chararray);
      grunt> f = filter l by (a matches '.*#.*');
      grunt> dump f; 
      -- No output, though two rows are expected.
      
      --As a workaround, add a \ to escape the # . This regex is valid even in 0.7 , and it will be even after this bug is fixed (its valid java regex, which has same meaning as above regex).
      grunt> f = filter l by (a matches '.*\\#.*');
      grunt> dump f; 
      asd#asdf
      2#asdf
      

        Attachments

        1. PIG-1770.1.patch
          2 kB
          Thejas Nair

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              • Assignee:
                thejas Thejas Nair
                Reporter:
                thejas Thejas Nair
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                • Created:
                  Updated:
                  Resolved: