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https://issues.apache.org/jira/browse/JENA-1226?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15440100#comment-15440100
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ASF subversion and git services commented on JENA-1226:
-------------------------------------------------------
Commit 7dc43e003f4fb2db65c46d0ed7e1ca633a28ab07 in jena's branch
refs/heads/master from [~andy.seaborne]
[ https://git-wip-us.apache.org/repos/asf?p=jena.git;h=7dc43e0 ]
JENA-1226: Transform (filter (filter ...)) correctly.
> Transform of nested OpFilter can lead to duplication of expressions.
> --------------------------------------------------------------------
>
> Key: JENA-1226
> URL: https://issues.apache.org/jira/browse/JENA-1226
> Project: Apache Jena
> Issue Type: Bug
> Reporter: Andy Seaborne
>
> {noformat}
> (filter (?A)
> (filter (?B)
> (table unit)))
> {noformat}
> gives (e.g. {{TransformCopy}})
> {noformat}
> (filter (exprlist ?B ?A)
> (filter (exprlist ?B ?A)
> (table unit)))
> {noformat}
> when it should be left alone
> {noformat}
> (filter (?A)
> (filter (?B)
> (table unit)))
> {noformat}
> or become
> {noformat}
> (filter (exprlist ?B ?A)
> (table unit))
> {noformat}
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