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https://issues.apache.org/jira/browse/JENA-432?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13856399#comment-13856399
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Andy Seaborne edited comment on JENA-432 at 12/24/13 5:41 PM:
--------------------------------------------------------------
Commit 1553306 from [~andy.seaborne] in branch 'jena/trunk'
[ https://svn.apache.org/r1553306 ]
JENA-595 , JENA-432 , JENA-616 , JENA-293 , JENA-383
Put filter equality rewrite after filter placement because
it may then be possible to apply it when it could not when
covering a larger pattern.
Modify some tests that were sensitive to this.
was (Author: jira-bot):
Commit 1553306 from [~andy.seaborne] in branch 'jena/trunk'
[ https://svn.apache.org/r1553306 ]
JENA-595 , JENA-432 , JENA-616 , JENA-293 , JENA-383
Put filter equality rewrite after filter placement because
it may then be possible to apply it when it could not when
covering a larger pattern.
Modify some test that were sensitive to this.
> 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, Optimizer
> Affects Versions: Jena 2.10.0
> Reporter: Simon Helsen
> Assignee: Andy Seaborne
> Fix For: Jena 2.10.1
>
>
> The following test query:
> {noformat}
> SELECT ?test ?s1
> WHERE {
> ?test ?p1 ?o1.
> FILTER ( ?test = <http://localhost/t1> || ?test = <http://localhost/t2> )
> OPTIONAL {
> SELECT ?s1
> { ?s1 ?p2 ?o2 }
> }
> }
> {noformat}
> produces the following plan:
> {noformat}
> (project (?test ?s1)
> (disjunction
> (table empty)
> (table empty)))
> {noformat}
> Something goes wrong with the FILTER expansion. As a workaround, we observed
> that the following variation:
> {noformat}
> SELECT ?test ?s1
> WHERE {
> { ?test ?p1 ?o1.
> FILTER ( ?test = <http://localhost/t1> || ?test = <http://localhost/t2> )
>
> }
> OPTIONAL {
> SELECT ?s1
> { ?s1 ?p2 ?o2 }
> }
> }
> {noformat}
> produces the correct plan:
> {noformat}
> (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)))))
> {noformat}
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