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Posted to dev@jena.apache.org by "Andy Seaborne (JIRA)" <ji...@apache.org> on 2015/12/12 17:40:46 UTC

[jira] [Assigned] (JENA-1086) property functions block filter placement.

     [ https://issues.apache.org/jira/browse/JENA-1086?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andy Seaborne reassigned JENA-1086:
-----------------------------------

    Assignee: Andy Seaborne

> property functions block filter placement.
> ------------------------------------------
>
>                 Key: JENA-1086
>                 URL: https://issues.apache.org/jira/browse/JENA-1086
>             Project: Apache Jena
>          Issue Type: Improvement
>          Components: ARQ
>    Affects Versions: Jena 3.0.1
>            Reporter: Andy Seaborne
>            Assignee: Andy Seaborne
>             Fix For: Jena 3.1.0
>
>
> There is no reason that this filter can't be pushed through the property function.
> Output of {{qparse --print=query --print=opt}}
> {noformat}
> PREFIX  :     <http://example/>
> PREFIX  list: <http://jena.hpl.hp.com/ARQ/list#>
> SELECT  *
> WHERE
>   { ?s     :p           ?o .
>     ?list  list:member  ?member
>     FILTER ( ?o )
>   }
> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> (prefix ((: <http://example/>)
>          (list: <http://jena.hpl.hp.com/ARQ/list#>))
>   (filter ?o
>     (propfunc list:member
>       ?list ?member
>       (bgp (triple ?s :p ?o)))))
> {noformat}



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