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javax.persistence Annotation NamedNativeQueries Target: Classes Used to specify multiple native SQL named queries. Query names are scoped to the persistence unit. The NamedNativeQueries annotation can be applied to an entity or mapped superclass. Since: JPA 1.0 See Also: NamedNativeQuery


javax.persistence Annotation SequenceGenerator Target: Classes and fields (including property get methods) Defines a primary key generator that may be referenced by name when a generator element ... to the persistence unit (across all generator types). Example: @SequenceGenerator(name="EMP_SEQ


javax.persistence.spi Interface ClassTransformer A persistence provider supplies an instance of this interface to the PersistenceUnitInfo.addTransformer method. The supplied transformer instance will get called to transform entity class files when they are loaded or redefined. The transformation


javax.persistence Annotation SecondaryTable Target: Classes Specifies a secondary table for the annotated entity class. Specifying one or more secondary tables indicates that the data for the entity ... that all persistent fields or properties of the entity are mapped to the primary table


javax.persistence Annotation NamedNativeQuery Target: Classes Specifies a named native SQL query. Query names are scoped to the persistence unit. The NamedNativeQuery annotation can be applied to an entity or mapped superclass. Since: JPA 1.0 QueryHint[] hints Query properties and hints. Query


javax.persistence Annotation Temporal Target: Fields (including property get methods) This annotation must be specified for persistent fields or properties of type java.util.Date and java.util.Calendar. It may only be specified for fields or properties of these types. The Temporal annotation


javax.persistence Annotation PersistenceContexts Target: Classes Declares one or more PersistenceContext annotations. It is used to express a dependency on container-managed entity manager persistence contexts. Since: JPA 1.0 See Also: PersistenceContext PersistenceContext[] value (Required) One or


javax.persistence Annotation Cacheable Target: Classes Specifies whether an entity should be cached if caching is enabled when the value of the persistence.xml caching element is ENABLE_SELECTIVE or DISABLE_SELECTIVE. The value of the Cacheable annotation is inherited by subclasses


javax.persistence Annotation Embedded Target: Fields (including property get methods) Specifies a persistent field or property of an entity whose value is an instance of an embeddable class. The embeddable class must be annotated as Embeddable. The AttributeOverride, AttributeOverrides


javax.persistence Annotation JoinColumns Target: Fields (including property get methods) Defines mapping for composite foreign keys. This annotation groups JoinColumn annotations for the same relationship. When the JoinColumns annotation is used, both the name and the referencedColumnName elements

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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