[hibernate-issues] [Hibernate-JIRA] Updated: (HSEARCH-545) Unable to project FullTextQuery.SCORE when using a custom Sort

[Emmanuel Bernard (JIRA)]

     [ http://opensource.atlassian.com/projects/hibernate/browse/HSEARCH-545?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Emmanuel Bernard updated HSEARCH-545:
-------------------------------------

         Assignee: Emmanuel Bernard
    Fix Version/s:     (was: 3.3.0)
                   3.3.0.Beta2

> Unable to project FullTextQuery.SCORE when using a custom Sort
> --------------------------------------------------------------
>
>                 Key: HSEARCH-545
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HSEARCH-545
>             Project: Hibernate Search
>          Issue Type: Bug
>          Components: engine
>    Affects Versions: 3.2.0.Final
>            Reporter: Hardy Ferentschik
>            Assignee: Emmanuel Bernard
>             Fix For: 3.3.0.Beta2
>
>
> Due to [changes in Lucene|http://lucene.apache.org/java/2_9_0/changes/Changes.html#2.9.0.changes_in_backwards_compatibility_policy] regarding the calculation of the score projections of {{FullTextQuery.SCORE}} return NaN when a custom sort is used. 
> IndexSearcher javadoc:
> {quote}
> By default, no scores are computed when sorting by field (using Searcher.search(Query,Filter,int,Sort)). You can change that, per IndexSearcher instance, by calling IndexSearcher.setDefaultFieldSortScoring
> {quote}
> See also [Search forum thread|https://forum.hibernate.org/viewtopic.php?f=9&t=1005262]
> Without custom sort projecting on {{FullTextQuery.SCORE}} works as {{ProjectionQueryTest}} shows.

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