[
https://issues.apache.org/jira/browse/LUCENE-446?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12493865
]
Doron Cohen commented on LUCENE-446:
------------------------------------
Yonik (and other Solr's search.function people),
I omitted some of the original functions/sources that were in your code:
- LinearFloatFunction, MaxFloatFunction, ReciprocalFloatFunction,
- OrdFieldSource, ReverseOrdFieldSource
The first 3 should be straightforward to implemented by extending
CustomScoreQuery, like the code samples show. Do you think such implementations
should be included, ready to use?
The last 2 Ord ones can be implemented as before, i.e. with the "expert" class
ValueSource that was kept. But they seemed spooky to me, with that comment
regarding multi-searchers. Are these just examples, or are they really useful?
Do you think they should be included?
Thanks,
Doron
> search.function - (1) score based on field value, (2) simple score
> customizability
> ----------------------------------------------------------------------------------
>
> Key: LUCENE-446
> URL: https://issues.apache.org/jira/browse/LUCENE-446
> Project: Lucene - Java
> Issue Type: New Feature
> Components: Search
> Reporter: Yonik Seeley
> Assigned To: Doron Cohen
> Priority: Minor
> Fix For: 2.2
>
> Attachments: function.patch.txt, function.patch.txt, function.zip,
> function.zip
>
>
> 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.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
