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211

Entity Management Settings

. ObjectDB can manage non enhanced classes by using reflection at the cost of performance. The possible ... the size of the shared level 2 cache that is managed by the EntityManagerFactory and shared by
209

Database Management Settings

that ObjectDB manages for queries: The results attribute specifies the size of the query result cache. Caching
149

List managed entities for a given entity manager

Hi, Is there a way to find the number of managed entities given an entity manager? My application has some memory leaks - I am doing clear() on the entity manager(s) but may be I forgot some - so if there is a way to know how many entities are managed by each my entity mgr - it would be helpful
26

Retrieving JPA Entity Objects

is then added to the persistence context as a managed entity object and returned to the application. Notice that construction of a new managed object during retrieval uses the no-arg constructor ... if the specified class is not an entity class. If the EntityManager already manages the specified
6

Constants.ELEMENT_PERSISTENCE_MANAGER_FACTORY

Static Field javax.jdo.Constants String ELEMENT_PERSISTENCE_MANAGER_FACTORY The name of the persistence manager factory element in the JDO configuration file. Constant value is persistence-manager-factory. Since: JDO 2.1
6

Constants.ANONYMOUS_PERSISTENCE_MANAGER_FACTORY_NAME

Static Field javax.jdo.Constants String ANONYMOUS_PERSISTENCE_MANAGER_FACTORY_NAME The name of the anonymous PersistenceManagerFactory, which is the empty string. Since: JDO 2.1
6

Constants.PROPERTY_PERSISTENCE_MANAGER_FACTORY_CLASS

Static Field javax.jdo.Constants String PROPERTY_PERSISTENCE_MANAGER_FACTORY_CLASS "javax.jdo.PersistenceManagerFactoryClass" Since: JDO 2.1 See Also: JDOHelper.getPersistenceManagerFactory(java.util.Map)
6

JDOPermission.CLOSE_PERSISTENCE_MANAGER_FACTORY

Static Field javax.jdo.spi.JDOPermission JDOPermission CLOSE_PERSISTENCE_MANAGER_FACTORY An instance of JDOPermission to be used for closePersistenceManagerFactory permission checking. Since: JDO 1.0.1
6

JDOPermission.SET_STATE_MANAGER

Static Field javax.jdo.spi.JDOPermission JDOPermission SET_STATE_MANAGER An instance of JDOPermission to be used for setStateManager permission checking. Since: JDO 1.0
6

JDOPermission.MANAGE_METADATA

Static Field javax.jdo.spi.JDOPermission JDOPermission MANAGE_METADATA An instance of JDOPermission to be used for manageMetadata permission checking. Since: JDO 1.0.2

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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