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10

virtual servers and one file

database is cached. Can you also check the cache that is available for files of this application by the OS ... Mathias Kocks What do you mean with "Can you also check the cache that is available for files ... , as the entire database file is probably cached by the OS in the large available RAM. Virtualization
2

javax.persistence.EntityResult

. The results obtained when insufficient data is available are undefined. Example: Query q = em
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getDelegate()

Method javax.persistence.EntityManager Object getDelegate() Return the underlying provider object for the EntityManager, if available. The result of this method is implementation specific. The unwrap method is to be preferred for new applications. Returns: underlying provider object for EntityManager Since: JPA 1.0
2

javax.persistence.PersistenceUnitUtil

to be available until after the database insert has occurred. Returns null if the entity does not
2

getIdentifier(entity)

Method javax.persistence.PersistenceUnitUtil Object getIdentifier( Object entity ) Return the id of the entity. A generated id is not guaranteed to be available until after the database insert has occurred. Returns null if the entity does not yet have an id. Parameters: entity - entity instance
0

nextValue()

Method javax.jdo.datastore.Sequence long nextValue() Returns the next sequence value as a long. If the next sequence value is not available or is not numeric, throw JDODataStoreException. Returns: the next value Since: JDO 2.0
0

next()

Method javax.jdo.datastore.Sequence Object next() Returns the next sequence value as an Object. If the next sequence value is not available, throw JDODataStoreException. Returns: the next value Since: JDO 2.0
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javax.jdo.PersistenceManager

a PersistenceManager might release it to the pool of available PersistenceManagers, or might be garbage collected
0

currentValue()

Method javax.jdo.datastore.Sequence long currentValue() Returns the current sequence value as a long. If the current sequence value is not available or is not numeric, throw JDODataStoreException. Returns: the current value Since: JDO 2.0
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close()

Method javax.jdo.PersistenceManager void close() Close this PersistenceManager so that no further requests may be made on it. A PersistenceManager instance can be used only until it is closed. Closing a PersistenceManager might release it to the pool of available PersistenceManagers, or

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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