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https://issues.apache.org/jira/browse/JENA-174?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andy Seaborne updated JENA-174:
-------------------------------
Component/s: Optimizer
> 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
>
> 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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