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javax.persistence.criteria Interface CriteriaBuilder Used to construct criteria queries, compound selections, expressions, predicates, orderings. Note that Predicate is used instead of Expression in this API in order to work around the fact that Java generics are not compatible with varags


javax.persistence.criteria Interface Expression<T> Superinterfaces: Selection<T>, TupleElement<T> Subinterfaces: CollectionJoin, Case, Coalesce, In, SimpleCase, From, Join, ListJoin, MapJoin, ParameterExpression, Path, PluralJoin, Predicate, Root, SetJoin, Subquery Type for query expressions


javax.persistence.criteria Interface CompoundSelection<X> Superinterfaces: Selection<X>, TupleElement<X> The CompoundSelection interface defines a compound selection item (tuple, array, or result of constructor). Since: JPA 2.0 Selection<X> alias(String name) Assigns an alias to the selection item


javax.persistence Annotation PostRemove Target: Callback methods Is used to specify callback methods for the corresponding lifecycle event. This annotation may be applied to methods of an entity class, a mapped superclass, or a callback listener class. Since: JPA 1.0 Learn how to define and use JPA


javax.persistence.criteria Interface ListJoin<Z,E> Superinterfaces: Expression<E>, FetchParent<Z,E>, From<Z,E>, Join<Z,E>, Path<E>, PluralJoin<Z,List<E>,E>, Selection<E>, TupleElement<E> The ListJoin interface is the type of the result of joining to a collection over an association or element


javax.persistence Annotation SqlResultSetMapping Target: Classes Specifies the mapping of the result of a native SQL query. Example: Query q = em.createNativeQuery( "SELECT o.id AS order_id, " + "o.quantity AS order_quantity, " + "o.item AS order_item


javax.persistence Annotation JoinTable Target: Fields (including property get methods) Used in the mapping of associations. It is specified on the owning side of an association. A join table is typically used in the mapping of many-to-many and unidirectional one-to-many associations


Annotation Element javax.jdo.annotations.Persistent IdGeneratorStrategy valueStrategy Value strategy to use to generate the value for this field or property (if any). Returns: the generated value strategy Default value: javax.jdo.annotations.IdGeneratorStrategy.UNSPECIFIED Since: JDO 2.1


Enum Constant javax.jdo.annotations.PersistenceModifier PERSISTENT Since: JDO 2.1


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

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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