Notes on possible approaches based emails with Pete and myself:
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Possibly be a <persistence:provider...> tag that could state two things:
1) "provider-class" - that class of the provider to instantiate
2) "entity-delegate-class" - that would the "isInstanceOf(..)" to use the provider
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Possibly the EntityManagerProxy, or the ManagedPersistenceContext could hold the matching persistence provider impl and just use it as a field (still might require casting). This would be instead of determining the provider every time the parent PersistenceProvider is called.
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Jay Balunas [27/Mar/08 02:34 PM]
Notes on possible approaches based emails with Pete and myself:
----------------------------------------------------------------------------
Possibly be a <persistence:provider...> tag that could state two things:
1) "provider-class" - that class of the provider to instantiate
2) "entity-delegate-class" - that would the "isInstanceOf(..)" to use the provider
---------------------------------------------------------------------------
Possibly the EntityManagerProxy, or the ManagedPersistenceContext could hold the matching persistence provider impl and just use it as a field (still might require casting). This would be instead of determining the provider every time the parent PersistenceProvider is called.
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Feature Request
Open
Blocker
Redesign PersistenceProvider to provide runtime detectetion of JPA impl in use
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Possibly be a <persistence:provider...> tag that could state two things:
1) "provider-class" - that class of the provider to instantiate
2) "entity-delegate-class" - that would the "isInstanceOf(..)" to use the provider
---------------------------------------------------------------------------
Possibly the EntityManagerProxy, or the ManagedPersistenceContext could hold the matching persistence provider impl and just use it as a field (still might require casting). This would be instead of determining the provider every time the parent PersistenceProvider is called.
-------------------------------------------------------------------------