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Download ObjectDB

Free download of the ObjectDB object database for Java with JPA and JDO support.... and one million entity objects per database file (no time limit). You need a license to remove these limits. ...

 
manual

Retrieving JPA Entity Objects

Explains how to use JPA to retrieve entity objects from the database.... Therefore, it is recommended to avoid unnecessary time consuming operations in no-arg constructors of entity classes and to keep ...

 
api-jdo

javax.jdo.spi.JDOImplHelper

This class is a helper class for JDO implementations.(Class of JDO)

 
api-jpa

FlushModeType.COMMIT

Flushing to occur at transaction commit.(Enum Constant of javax.persistence.FlushModeType)

 
api-jpa

javax.persistence.FlushModeType

Flush mode setting.(Enum of JPA)

 
api-jdo

getOptimistic()

Optimistic transactions do not hold data store locks until commit time.(Method of javax.jdo.Transaction)

 
api-jdo

setIgnoreCache(ignoreCache)

Set the ignoreCache option.(Method of javax.jdo.Query)

 
api-jpa

javax.persistence.LockTimeoutException

Thrown by the persistence provider when an pessimistic locking conflict occurs that does not result in transaction rollback.(Exception of JPA)

 
api-jpa

javax.persistence.EntityExistsException

Thrown by the persistence provider when EntityManager.persist(Object) is called and the entity already exists.(Exception of JPA)

 
api-jdo

getObjectById(oid, validate)

This method locates a persistent instance in the cache of instances managed by this PersistenceManager.(Method of javax.jdo.PersistenceManager)