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https://issues.apache.org/jira/browse/ISIS-1414?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15312404#comment-15312404
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ASF subversion and git services commented on ISIS-1414:
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Commit 53401049e9beabd11718148999ab7594679f2ca1 in isis's branch
refs/heads/master from [~danhaywood]
[ https://git-wip-us.apache.org/repos/asf?p=isis.git;h=5340104 ]
ISIS-1414: tiny fix to docs
> nextTransaction can cause null pointers with the new MetricsService.
> ---------------------------------------------------------------------
>
> Key: ISIS-1414
> URL: https://issues.apache.org/jira/browse/ISIS-1414
> Project: Isis
> Issue Type: Bug
> Components: Core
> Affects Versions: 1.12.1
> Reporter: Dan Haywood
> Assignee: Dan Haywood
> Priority: Minor
> Fix For: 1.13.0
>
>
> The reason is that request-scoped services are implemented as transaction
> services. Most of the time the scope of a request and the scope of a
> transacion are one and the same: there is just one transaction per scope.
> However, TransactionService#nextTransaction admits for there being multiple
> transactions per request.
> This bug is that the current implementation for RequestScoped does the
> init/close as part of the Transaction management. Instead, this should be
> part of the PersistenceSession#open/close (a PersistenceSession wraps a JDO
> session, so basically corresponds to the request).
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