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https://issues.apache.org/jira/browse/JDO-597?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12622837#action_12622837
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Andy Jefferson commented on JDO-597:
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The latter two tests seem to have an error. The localSetup creates a "pmf2"
that is read only. The first test gets its PM from "pmf2". The latter two tests
just call getPM(), hence not using the readonly PMF.
> PMF : Add "readOnly" setting for better handling of read-only datastores
> ------------------------------------------------------------------------
>
> Key: JDO-597
> URL: https://issues.apache.org/jira/browse/JDO-597
> Project: JDO
> Issue Type: New Feature
> Components: api2, api2-legacy, specification
> Reporter: Andy Jefferson
> Assignee: Andy Jefferson
> Fix For: JDO 2 maintenance release 2
>
> Attachments: JDOReadOnlyException.patch
>
>
> A user has a datastore that is outside their control and they either don't
> have permission to write to it, or maybe they have permissions but don't want
> to write to it. They want a better way of handling this, preventing updates
> to the datastore.
> Propose :-
> PMF property (with setter/getter)
> javax.jdo.option.ReadOnly - values true | false
> JDOReadOnlyException extends JDOUserException
> Behaviour :-
> When readOnly is set to true :-
> Any operation resulting in a creation/modification of an object to be sent to
> the datastore should throw a JDOReadOnlyException. This may be at commit(),
> flush(), or alternatively at makePersistent() when using datastore txns, or
> query.deletePersistentAll(). That is, no change should be made to the
> datastore contents at all.
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