[
https://issues.apache.org/jira/browse/JENA-432?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13630344#comment-13630344
]
Andy Seaborne commented on JENA-432:
------------------------------------
Yes - something is wrong - but the example isn't minimal. You seem to know more
about the situation than is in the initial report. It really would be
appreciated to have complete, minimal test case that can be run.
> Filter optimization messes up when a nested select is present in the same
> block
> -------------------------------------------------------------------------------
>
> Key: JENA-432
> URL: https://issues.apache.org/jira/browse/JENA-432
> Project: Apache Jena
> Issue Type: Bug
> Components: ARQ
> Affects Versions: Jena 2.10.0
> Reporter: Simon Helsen
>
> The following test query:
> SELECT ?test ?s1
> WHERE {
> ?test ?p1 ?o1.
> FILTER ( ?test = <http://localhost/t1> || ?test = <http://localhost/t2> )
> OPTIONAL {
> SELECT ?s1
> { ?s1 ?p2 ?o2 }
> }
> }
> produces the following plan:
> (project (?test ?s1)
> (disjunction
> (table empty)
> (table empty)))
> Something goes wrong with the FILTER expansion. As a workaround, we observed
> that the following variation:
> SELECT ?test ?s1
> WHERE {
> { ?test ?p1 ?o1.
> FILTER ( ?test = <http://localhost/t1> || ?test = <http://localhost/t2> )
>
> }
> OPTIONAL {
> SELECT ?s1
> { ?s1 ?p2 ?o2 }
> }
> }
> produces the correct plan:
> (project (?test ?s1)
> (leftjoin
> (disjunction
> (assign ((?test <http://localhost/t1>))
> (bgp (triple <http://localhost/t1> ?p1 ?o1)))
> (assign ((?test <http://localhost/t2>))
> (bgp (triple <http://localhost/t2> ?p1 ?o1))))
> (project (?s1)
> (bgp (triple ?s1 ?/p2 ?/o2)))))
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
