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https://issues.apache.org/jira/browse/JENA-1451?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16300493#comment-16300493
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ASF subversion and git services commented on JENA-1451:
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Commit 0d2f51b89cec6b9c67cd52919046f979f8964397 in jena's branch
refs/heads/master from [~andy.seaborne]
[ https://git-wip-us.apache.org/repos/asf?p=jena.git;h=0d2f51b ]
JENA-1451: "contains" for special graphs
> DatasetFactory.createGeneral() never contains default graph
> -----------------------------------------------------------
>
> Key: JENA-1451
> URL: https://issues.apache.org/jira/browse/JENA-1451
> Project: Apache Jena
> Issue Type: Bug
> Components: ARQ
> Affects Versions: Jena 3.6.0
> Reporter: Adam Jacobs
> Priority: Minor
>
> See:
> http://mail-archives.apache.org/mod_mbox/jena-dev/201712.mbox/<0a67c2ce-f414-3eae-51dc-226768d4facd%40apache.org>
>
> Model m1 = ModelFactory.createDefaultModel();
> m1.add(m1.createResource(), m1.createProperty("foo"),
> m1.createResource());
> Dataset memory = DatasetFactory.create();
> Dataset general = DatasetFactory.createGeneral();
> memory.getDefaultModel().add(m1);
> general.getDefaultModel().add(m1);
> //Memory model contains default graph. General model does not.
>
> System.out.println(memory.containsNamedModel(Quad.defaultGraphIRI.getURI()));
> //true
>
> System.out.println(general.containsNamedModel(Quad.defaultGraphIRI.getURI()));
> //false
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