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https://issues.apache.org/jira/browse/JENA-1517?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16437334#comment-16437334
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ASF subversion and git services commented on JENA-1517:
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Commit db818ea3f70e15b9b0c9cd9bec0e16c6fa9ae6e6 in jena's branch
refs/heads/master from [~andy.seaborne]
[ https://git-wip-us.apache.org/repos/asf?p=jena.git;h=db818ea ]
JENA-1517: Merge commit 'refs/pull/393/head' of https://github.com/apache/jena
This closes #393.
> Some queries not working when using OpQuadBlock
> -----------------------------------------------
>
> Key: JENA-1517
> URL: https://issues.apache.org/jira/browse/JENA-1517
> Project: Apache Jena
> Issue Type: Bug
> Components: ARQ
> Affects Versions: Jena 3.6.0
> Reporter: Jeremy Coulon
> Priority: Major
>
> I am using a custom QueryEngine that rewrites algebra. I am transforming
> OpBGP into OpQuadBlock (not OpQuadPattern).
> Most queries work fine except when using one of the following:
> * MINUS
> * FILTER EXISTS
> * FILTER NOT EXISTS
> I tracked the issue down to this visitor:
> org.apache.jena.sparql.algebra.OpVarsPattern.
> An override for visit(OpQuadBlock) is missing.
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