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https://issues.apache.org/jira/browse/COMMONSRDF-55?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15858069#comment-15858069
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ASF GitHub Bot commented on COMMONSRDF-55:
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Github user stain commented on the issue:
https://github.com/apache/commons-rdf/pull/32
I've added javadoc to this effect (commit 7bbff25) and will merge this now.
> Stream of Jena quads use wrong IRI for default graph
> ----------------------------------------------------
>
> Key: COMMONSRDF-55
> URL: https://issues.apache.org/jira/browse/COMMONSRDF-55
> Project: Apache Commons RDF
> Issue Type: Bug
> Components: jena
> Affects Versions: 0.3.0
> Reporter: Stian Soiland-Reyes
> Assignee: Stian Soiland-Reyes
> Fix For: 1.0.0
>
>
> See https://travis-ci.org/apache/commons-rdf/builds/195548479
> {code}
> org.apache.commons.rdf.jena.DatasetJenaTest
> streamLanguageTagsCaseInsensitive(org.apache.commons.rdf.jena.DatasetJenaTest)
> Time elapsed: 0.012 sec <<< FAILURE!
> java.lang.AssertionError: expected:<<http://example.com/s1>
> <http://example.com/greeting> "Hello"@EN-GB <urn:x-arq:DefaultGraph>.> but
> was:<<http://example.com/s1> <http://example.com/greeting> "Hello"@en-GB .>
> {code}
> Jena uses the IRI `<urn:x-arq:DefaultGraph>` internally to represent the
> default graph within datasets - we need to recognize that on the way out of a
> `JenaDatasetImpl.stream()` and possibly in the `asQuad(JenaQuad)` converter
> and replace it with `Optional.empty()` so the default graph appears the same
> across implementations.
> The `AbstractDatasetTest` should be augmented to do more tests on the
> default graph, including `.stream()`, `.iterate()`, `.contains()` and
> `.remove()`1.
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