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From "Robert Muir (JIRA)" <j...@apache.org>
Subject [jira] Created: (LUCENE-2605) queryparser parses on whitespace
Date Tue, 17 Aug 2010 03:31:17 GMT
queryparser parses on whitespace
--------------------------------

                 Key: LUCENE-2605
                 URL: https://issues.apache.org/jira/browse/LUCENE-2605
             Project: Lucene - Java
          Issue Type: Bug
            Reporter: Robert Muir
             Fix For: 3.1, 4.0


The queryparser parses input on whitespace, and sends each whitespace separated term to its
own independent token stream.

This breaks the following at query-time, because they can't see across whitespace boundaries:
* n-gram analysis
* shingles 
* synonyms (especially multi-word for whitespace-separated languages)
* languages where a 'word' can contain whitespace (e.g. vietnamese)

Its also rather unexpected, as users think their charfilters/tokenizers/tokenfilters will
do the same thing at index and querytime, but
in many cases they can't. Instead, preferably the queryparser would parse around only real
'operators'.


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