I\'m working with DataNucleus as part of a Google App Engine project and I\'m having a bit of trouble with columns in persistence.
Why am I receiving the exception below if the type of both entities is PersistentLogin? I thought that would mean they are in the same entity group, but I guess that is an incorrect assumption. Any id
Why does the code below result in org.datanucleus.exceptions.NucleusUserException: Object Manager has been closed? The exception appears to be thrown at query.getResultList().
I have a simple JPA @Entity that has a property of type java.util.Locale. When I try and persist this, I get the following error:
I\'m using DataNucleus as a JPA implementation to store my classes in my web application.I use a set of converters which all have toDTO() and fromDTO().
Has anyone successfully configured JDO datanucleus default to google app engine to work on a local database?
Is it possible (and does it make sense) to use the JDO Level 2 Cache for the Google App Engine Datastore?
According to JDO, you can use PersistenceManager.getObjectsById to load mult开发者_C百科iple entity instances by their object id.
any example on using memcache/general 开发者_StackOverflow社区cache with jpa entitymanager on JGAE? or the only way to do it is manually put/set memcache on service layer?DataNucleus docs define adequ
1.i able to persist entity, and in _admin , i able to see key, id/name. total 6 results. but why it not show all the property inside my entity class?
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