[jira] [Updated] (JENA-174) Linearization optimization does not account for SERVICE correctly.

["Andy Seaborne (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/JENA-174?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andy Seaborne updated JENA-174:
-------------------------------

    Priority: Minor  (was: Major)
    
> Linearization optimization does not account for SERVICE correctly.
> ------------------------------------------------------------------
>
>                 Key: JENA-174
>                 URL: https://issues.apache.org/jira/browse/JENA-174
>             Project: Apache Jena
>          Issue Type: Bug
>          Components: ARQ, Optimizer
>            Reporter: Andy Seaborne
>            Priority: Minor
>
> SELECT ?p ?o WHERE
> {
> { BIND(<http://dbpedia.org/sparql> AS ?service)}
> UNION
> { BIND(<http://live.dbpedia.org/sparql> AS ?service)}
> SERVICE ?service
> {<http://dbpedia.org/resource/Paris> ?p ?o. }
> }
> ==>
> (project (?p ?o)
>   (join
>     (union
>       (extend ((?service <http://dbpedia.org/sparql>))
>         (table unit))
>       (extend ((?service <http://live.dbpedia.org/sparql>))
>         (table unit)))
>     (service ?service
>       (bgp (triple <http://dbpedia.org/resource/Paris> ?p ?o)))))
> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> (project (?p ?o)
>   (sequence
>     (union
>       (extend ((?service <http://dbpedia.org/sparql>))
>         (table unit))
>       (extend ((?service <http://live.dbpedia.org/sparql>))
>         (table unit)))
>     (service ?service
>       (bgp (triple <http://dbpedia.org/resource/Paris> ?p ?o)))))

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