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javax.persistence Enum TemporalType java.lang.Object java.lang.Enum<javax.persistence.TemporalType> javax.persistence.TemporalType Implemented Interfaces: Serializable, Comparable<TemporalType> Type used to indicate a specific mapping of java.util.Date or java.util.Calendar


javax.persistence Annotation MapKeyEnumerated Target: Fields (including property get methods) Specifies the enum type for a map key whose basic type is an enumerated type. The MapKeyEnumerated ... a map key enum type. (Optional) The type used in mapping a map key enum type. Default value: javax.persistence.EnumType.ORDINAL Since: JPA 2.0


javax.persistence Annotation Inheritance Target: Classes Defines the inheritance strategy to be used for an entity class hierarchy. It is specified on the entity class that is the root of the entity ... . Default value: javax.persistence.InheritanceType.SINGLE_TABLE Since: JPA 1.0


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 Annotation MapKeyTemporal Target: Fields (including property get methods) This annotation must be specified for persistent map keys of type java.util.Date and java.util.Calendar. It may only be specified for map keys of these types. The MapKeyTemporal annotation can be applied


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 EmbeddedId Target: Fields (including property get methods) Applied to a persistent field or property of an entity class or mapped superclass to denote a composite primary key that is an embeddable class. The embeddable class must be annotated as Embeddable


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 DiscriminatorColumn Target: Classes Specifies the discriminator column for the SINGLE_TABLE and JOINED Inheritance mapping strategies. The strategy and the discriminator ... to DiscriminatorType.STRING. Default value: javax.persistence.DiscriminatorType.STRING Since: JPA 1.0 int length


Static Field javax.jdo.Constants String PMF_ATTRIBUTE_PERSISTENCE_UNIT_NAME The name of the persistence manager factory element's "persistence-unit-name" attribute. Since: JDO 2.1

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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