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https://issues.apache.org/jira/browse/JENA-1068?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15022376#comment-15022376
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Andy Seaborne commented on JENA-1068:
-------------------------------------
That's is (and was) OK for {{DatasetImpl}}. The code check {{getGraph}} each
time - it was the Graph->Model step that was being cached and it isn't
expensive like it was.
{{DatasetGraphCaching}} would have been getting in the way.
> Remove DatasetGraphCaching
> --------------------------
>
> Key: JENA-1068
> URL: https://issues.apache.org/jira/browse/JENA-1068
> Project: Apache Jena
> Issue Type: Improvement
> Components: ARQ, SDB
> Affects Versions: Jena 3.0.0
> Reporter: Andy Seaborne
> Assignee: Andy Seaborne
> Priority: Minor
> Fix For: Jena 3.0.1
>
>
> This class seems to do nothing much but does add complexity. There is
> caching in {{DatasetImpl}} that competes with this caching. Nowadays, Jena's
> storage systems are using {{GraphView}} which is very lightweight so caching
> the creation of graphs is not beneficial and the cache has to be concurrent
> and transaction safe.
> The internal class {{DatasetGraphCaching.Helper}} is used only in SDB.
> {{Helper}} could be moved to into SDB.
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