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https://issues.apache.org/jira/browse/JENA-1752?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andy Seaborne reopened JENA-1752:
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(for editing)
> QueryBuilders should support (NOT) EXISTS clause
> ------------------------------------------------
>
> Key: JENA-1752
> URL: https://issues.apache.org/jira/browse/JENA-1752
> Project: Apache Jena
> Issue Type: Improvement
> Reporter: Jan Martin Keil
> Priority: Major
>
> To support (NOT) EXISTS clauses, I propose to add to the classes
> * {{org.apache.jena.arq.querybuilder.AskBuilder}}
> * {{org.apache.jena.arq.querybuilder.ConstructBuilder}}
> * {{org.apache.jena.arq.querybuilder.SelectBuilder}}
> the following methods
> * {{addExists(Element el)}}
> * {{addNotExists(Element el)}}
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