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From "Chris Male (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-2533) Improve API of ValueSource & FunctionQuery SortField weighting
Date Sat, 21 May 2011 15:10:47 GMT

    [ https://issues.apache.org/jira/browse/SOLR-2533?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13037401#comment-13037401
] 

Chris Male commented on SOLR-2533:
----------------------------------

Or we could just go for something simpler I guess, and basically borrow the same idea and
add weight(IndexSearcher) to Sort & SortField which then returns a new Sort if any SortField
changes.

> Improve API of ValueSource & FunctionQuery SortField weighting
> --------------------------------------------------------------
>
>                 Key: SOLR-2533
>                 URL: https://issues.apache.org/jira/browse/SOLR-2533
>             Project: Solr
>          Issue Type: Improvement
>          Components: search
>            Reporter: Chris Male
>
> Started from LUCENE-2883: Support for sorting by ValueSource and FunctionQueries is done
through ValueSource#getSort and the ValueSourceSortField.  In order to support VSs containing
other Queries, its necessary to allow the Querys to be weighted by an IndexSearcher.  Currently
this is handled by having ValueSourceSortField implement SolrSortField.  In Solr's SolrIndexSearcher,
SortFields implementing SolrSortField are then weighted before the Sort is used.
> Sorting by FunctionQuery and ValueSource are invaluable and will become available to
all Lucene users in LUCENE-2883.  But in order to do so, we need to remove the coupling of
this functionality to Solr, and make it more standard.
> Any and all thoughts about how to do this are appreciated.

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