On 21/02/2012 14:37, Steven A Rowe wrote:
Hi Paul,

Lucene QueryParser splits on whitespace and then sends individual words one-by-one to 
be analyzed.  All analysis components that do their work based on more than one word, 
including ShingleFilter and SynonymFilter, are borked by this.  (There is a JIRA 
issue open for the QueryParser 
problem:<https://issues.apache.org/jira/browse/LUCENE-2605>).

There is a workaround involving PositionFilter described on the Solr 
wiki:<http://wiki.apache.org/solr/AnalyzersTokenizersTokenFilters#solr.PositionFilterFactory>.
  Essentially, include PositionFilter after ShingleFilter in your analyzer, then wrap 
queries in quotes before sending them to QueryParser.

CommonGramsFilter does the emit-only-shingles-containing-stopwords thing, but 
in Lucene/Solr 3.x, it's in Solr (solr-core-3.X.jar, to be exact), not Lucene; 
you can use it in your application by including the solr-core jar as a 
dependency.  In trunk, which will be released as Lucene/Solr 4.0, 
CommonGramsFilter has been moved to the analyzers-common module.

Steve


Thanks Steve, as our user interface allows access to the full lucene query syntax I'll hold off this for now.

Paul

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