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https://issues.apache.org/jira/browse/JENA-1478?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16352370#comment-16352370
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Andy Seaborne commented on JENA-1478:
-------------------------------------
{{DyadicDatasetGraph.transactionMode()}}
This can return null. Enums really shouldn't be null.
>From the point of view of {{DyadicDatasetGraph}}, transactions are READ
>because no changes are allowed. of course, the underlying dataset can be
>changing but there isn't transaction support for this anyway.
> DifferenceDatasetGraph.contains
> -------------------------------
>
> Key: JENA-1478
> URL: https://issues.apache.org/jira/browse/JENA-1478
> Project: Apache Jena
> Issue Type: Bug
> Affects Versions: Jena 3.6.0
> Reporter: Andy Seaborne
> Priority: Major
> Fix For: Jena 3.7.0
>
>
> (Assuming "difference is set-difference" not symmetric difference")
> defined "contains" as
> {noformat}
> public boolean contains(Node g, Node s, Node p, Node o) {
> return both(dsg -> dsg.contains(g, s, p, o));
> }
> {noformat}
> This should be:
> {noformat}
> public boolean contains(Node g, Node s, Node p, Node o) {
> return getLeft().contains(g, s, p, o) && ! getRight().contains(g, s, p,
> o);
> }
> {noformat}
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