[jira] [Created] (JENA-494) Variables in SERVICE can be written by scoping transforms and not recovered.

[Andy Seaborne (JIRA)]

Andy Seaborne created JENA-494:
----------------------------------

             Summary: Variables in SERVICE can be written by scoping transforms 
and not recovered.
                 Key: JENA-494
                 URL: https://issues.apache.org/jira/browse/JENA-494
             Project: Apache Jena
          Issue Type: Bug
          Components: ARQ
    Affects Versions: Jena 2.10.1
            Reporter: Andy Seaborne


{noformat}
SELECT ?z
{
   SELECT ?z {
      SERVICE <http://foo> { ?c ?p ?o }
      ?c ?q ?z 
   }
}
{noformat}
==>
{noformat}
(project (?z)
  (project (?z)
    (sequence
      (service <http://foo>
        (bgp (triple ?/c ?/p ?/o)))
      (bgp (triple ?/c ?/q ?z)))))
{noformat}
but the remote request is 
{noformat}
SELECT * { ?c ?p ?o }
{noformat}
so the {{?/c}} and {{?c}} do not join.


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