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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