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From "Chuck Williams (JIRA)" <j...@apache.org>
Subject [jira] Created: (LUCENE-553) MultiFieldDisjunctionMaxQueryParser
Date Sat, 22 Apr 2006 05:41:06 GMT
MultiFieldDisjunctionMaxQueryParser
-----------------------------------

         Key: LUCENE-553
         URL: http://issues.apache.org/jira/browse/LUCENE-553
     Project: Lucene - Java
        Type: New Feature

  Components: QueryParser  
    Versions: 1.9, 2.0    
 Environment: All
    Reporter: Chuck Williams


Following on from Lucene-323, here is a replacement for the old DistributingMultiFieldQueryParser
that works with the new QueryParser.  This is essentially a cut-and-paste of MultiFieldQueryParser,
using DisjunctionMaxQuery instead of BooleanQuery as the combing operator for the expansion
of query terms across the multiple fields being searched.  This is an important adjunct to
DisjunctionMaxQuery as it provides a way to generate this query from input query strings.

It would be possible to generalize MultiFieldQueryParser to parameterize the combining operator,
but this would require modifying it rather than simply adding a new class.


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