[ http://issues.apache.org/jira/browse/LUCENE-553?page=all ]
Chuck Williams updated LUCENE-553:
----------------------------------
Attachment: MultiFieldDisjunctionMaxQueryParser.java
> 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
> Attachments: MultiFieldDisjunctionMaxQueryParser.java,
> MultiFieldDisjunctionMaxQueryParserTest.java
>
> 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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