Linearization optimization does not account for SERVICE correctly.
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Key: JENA-174
URL: https://issues.apache.org/jira/browse/JENA-174
Project: Jena
Issue Type: Bug
Components: ARQ
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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