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https://issues.apache.org/jira/browse/JENA-1226?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andy Seaborne resolved JENA-1226.
---------------------------------
Resolution: Fixed
Assignee: Andy Seaborne
Fix Version/s: Jena 3.1.1
The bug was introduced in earlier 3.1.1 work.
> 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
> Assignee: Andy Seaborne
> Fix For: Jena 3.1.1
>
>
> {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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