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Posted to dev@aries.apache.org by "Timothy Ward (JIRA)" <ji...@apache.org> on 2010/02/18 21:08:27 UTC
[jira] Resolved: (ARIES-137) Lifecycle issues with
PersistenceBundleManager
[ https://issues.apache.org/jira/browse/ARIES-137?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Timothy Ward resolved ARIES-137.
--------------------------------
Resolution: Fixed
I have updated the PersistenceBundleManager to track managers with no persistence provider, and to attempt to assign them as providers become available
> Lifecycle issues with PersistenceBundleManager
> ----------------------------------------------
>
> Key: ARIES-137
> URL: https://issues.apache.org/jira/browse/ARIES-137
> Project: Aries
> Issue Type: Bug
> Components: JPA
> Reporter: Alan Keane
> Assignee: Timothy Ward
>
> EntityManagerFactory only gets registered for a unit if a matching PersistenceProvider service
> is bound before the persistence bundle is added to the tracker.
> The PersistenceBundleManager will only attempt to setup an EntityManagerFactoryManager
> for the PersistenceProvider services available at the point when a persistence bundle
> is first detected and subsequently only tracks the persistence bundles that get matched with a Provider.
> Any Persistence bundle added to the tracker before a (suitable) PersistenceProvider is
> available will never get matched with a provider.
> The PersistenceBundleManager#addingProvider method should check for persistence bundles
> that are not matched with a provider and attempt to resolve.
> One possible solution would be that the addingBundle and setUpManager methods use a
> null object style pattern (or similar) for the EntityManagerFactoryManager so that
> detected persistence bundles without a matching provider are still tracked.
> When a provider service is then bound to the PersistenceBundleManager via addingProvider,
> iterate through all tracked persistence bundles and attempt to match those that do
> not have a valid EntityManagerFactoryManager associated.
> (Note: MultiBundleTracker does not expose the bundles tracked, but by exposing getBundles()
> for above and also using getObject() where the EntityManagerFactoryManager is being returned
> there probably wouldn't be any need for bundleToManagerMap and associated synchronization)
> Also I think an ExecutorService should be used for the setUpManager calls rather
> than this work being done on a framework event thread.
> (I don't have time right now to look at this properly, so somebody might want to have a
> look/take this in the meantime)
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