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From "Markus Jelsma (JIRA)" <j...@apache.org>
Subject [jira] [Created] (LUCENE-4470) Expose SpanFirst in eDismax
Date Wed, 10 Oct 2012 11:15:02 GMT
Markus Jelsma created LUCENE-4470:
-------------------------------------

             Summary: Expose SpanFirst in eDismax
                 Key: LUCENE-4470
                 URL: https://issues.apache.org/jira/browse/LUCENE-4470
             Project: Lucene - Core
          Issue Type: Improvement
          Components: modules/queryparser
    Affects Versions: 4.0-BETA
         Environment: solr-spec 5.0.0.2012.10.09.19.29.59
solr-impl 5.0-SNAPSHOT 1366361:1396116M - markus - 2012-10-09 19:29:59 
            Reporter: Markus Jelsma
             Fix For: 4.1, 5.0


Expose Lucene's SpanFirst capability in Solr's extended Dismax query parser. This issue adds
the SF-parameter (SpanFirst) and takes a FIELD~DISTANCE^BOOST formatted value.

For example, sf=title~5^2 will give a boost of 2 if one of the normal clauses, originally
generated for automatic phrase queries, is located within five positions from the field's
start.

Unit test is included and all tests pass.

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