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Optimization Question

to the database in the wrong order causing a period of time where the current set of data is incorrect. I ... One of our uses for your ObjectDB software is in maintaining the current state of a large number of data objects called tracks. These tracks change very frequently over time (every 10-15 seconds
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javax.persistence.EntityManagerFactory

EntityManager. This method returns a new EntityManager instance each time it is invoked. The isOpen ... returns a new EntityManager instance each time it is invoked. The isOpen method will return true
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javax.persistence.Enumerated

: public enum EmployeeStatus {FULL_TIME, PART_TIME, CONTRACT} public enum SalaryRate
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javax.persistence.TransactionRequiredException

information about the current state of the stack frames for the current thread. Returns: a reference
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javax.persistence.Query

instance. Returns: query properties and hints Since: JPA 2.0 LockModeType getLockMode() Get the current lock mode for the query. Get the current lock mode for the query. Returns: lock mode Throws
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getPersistenceProviderResolver()

Static Method javax.persistence.spi.PersistenceProviderResolverHolder PersistenceProviderResolver getPersistenceProviderResolver() Returns the current persistence provider resolver. Returns: the current persistence provider resolver Since: JPA 2.0
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javax.jdo.JDOObjectNotFoundException

about the current state of the stack frames for the current thread. Returns: a reference
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javax.jdo.JDOUnsupportedOptionException

. This method records within this Throwable object information about the current state of the stack frames for the current thread. Returns: a reference to this Throwable instance. Since: Java JDK1.0
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isDeleted(pc)

Static Method javax.jdo.JDOHelper boolean isDeleted( Object pc ) Tests whether the parameter instance has been deleted. Instances that have been deleted in the current transaction return true ... the current transaction. Since: JDO 1.0 See Also: PersistenceManager.deletePersistent(Object pc) PersistenceCapable.jdoIsDeleted()
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javax.jdo.JDOUserCallbackException

information about the current state of the stack frames for the current thread. Returns

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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