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From "Yonik Seeley (JIRA)" <j...@apache.org>
Subject [jira] Created: (LUCENE-446) FunctionQuery - score based on field value
Date Tue, 04 Oct 2005 20:23:48 GMT
FunctionQuery - score based on field value
------------------------------------------

         Key: LUCENE-446
         URL: http://issues.apache.org/jira/browse/LUCENE-446
     Project: Lucene - Java
        Type: New Feature
  Components: Search  
    Versions: 1.9    
    Reporter: Yonik Seeley


FunctionQuery can return a score based on a field's value or on it's ordinal value.

FunctionFactory subclasses define the details of the function.  There is currently a LinearFloatFunction
(a line specified by slope and intercept).

Field values are typically obtained from FieldValueSourceFactory.  Implementations include
FloatFieldSource, IntFieldSource, and OrdFieldSource.

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