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https://issues.apache.org/jira/browse/JDO-607?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12630899#action_12630899
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Craig Russell commented on JDO-607:
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I've reverted this change.
I've looked in the Java language specification for the reason the compiler
complains and can't find anything. We did a very similar thing with the
JDOHelper in which the user can either use the helper methods statically or via
an instance. The difference seems to be that JDOHelper is a class that doesn't
implement an interface. Any pointers to the language spec section disallowing
this would be appreciated.
Moving on, we have a choice: either declare a new interface that is referenced
by the services file, e.g. PersistenceManagerFactoryService that declares these
two methods as non-static, or declare two new methods that are non-static, e.g.
createPersistenceManagerFactory(Map) and createtPersistenceManagerFactory(Map,
Map).
> Require no-args constructor for PMF implementations and add static methods to
> PMF interface
> -------------------------------------------------------------------------------------------
>
> Key: JDO-607
> URL: https://issues.apache.org/jira/browse/JDO-607
> Project: JDO
> Issue Type: New Feature
> Components: api2
> Affects Versions: JDO 2 maintenance release 1
> Reporter: Craig Russell
> Assignee: Craig Russell
> Fix For: JDO 2 maintenance release 2
>
> Attachments: jdo-607.patch, jdo-607.patch
>
>
> In order to use Java 6 ServiceLoader to instantiate PMF, the class needs to
> implement a no-args constructor, and the PMF interface needs to define the
> methods that are currently static (and therefore not defined in the
> interface).
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