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From "Marvin Humphrey (JIRA)" <j...@apache.org>
Subject [jira] Created: (LUCY-112) PolyMatcher
Date Fri, 18 Jun 2010 03:47:23 GMT
PolyMatcher
-----------

                 Key: LUCY-112
                 URL: https://issues.apache.org/jira/browse/LUCY-112
             Project: Lucy
          Issue Type: New Feature
          Components: Core - Search
            Reporter: Marvin Humphrey
            Assignee: Marvin Humphrey
            Priority: Blocker


PolyMatcher will serve as the parent class for several crucial subclasses:
ANDScorer, ORMatcher, ORScorer, NOTMatcher, and RequiredOptionalScorer.
Together, PolyMatcher and these classes will play roughly the same role as
Lucene's BooleanScorer2 and its satellite classes, e.g. DisjunctionSumScorer.

PolyMatcher is a simple class; its main role is to serve as a common parent
with a array of "children" Matchers, a Similarity, and an array of cached
coord boosts.

This patch also adds the Coord() method to Similarity.

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