[ http://issues.apache.org/jira/browse/LUCENE-446?page=all ]
Yonik Seeley updated LUCENE-446:
--------------------------------
Attachment: (was: FieldValueSource.java)
> 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
> Attachments: FloatFieldSource.java, FunctionFactory.java, FunctionInst.java,
> FunctionQuery.java, IntFieldSource.java, LinearFloatFunction.java,
> OrdFieldSource.java, ReciprocalFloatFunction.java, ReverseOrdFieldSource.java
>
> 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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