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Method javax.persistence.Tuple X get( TupleElement<X> tupleElement ) Get the value of the specified tuple element. Parameters: tupleElement - tuple element Returns: value of tuple element Throws: IllegalArgumentException - if tuple element does not correspond to an element in the query result tuple Since: JPA 2.0


javax.persistence Interface TupleElement<X> Subinterfaces: CollectionJoin, CompoundSelection, Case, Coalesce, In, SimpleCase, Expression, From, Join, ListJoin, MapJoin, ParameterExpression, Path, PluralJoin, Predicate, Root, Selection, SetJoin, Subquery The TupleElement interface defines an element


Method javax.persistence.TupleElement String getAlias() Return the alias assigned to the tuple element or null, if no alias has been assigned. Returns: alias Since: JPA 2.0


Method javax.persistence.TupleElement Class<?> getJavaType() Return the Java type of the tuple element. Returns: the Java type of the tuple element Since: JPA 2.0


. Since: JPA 2.0 See Also: TupleElement Object get(int i) Get the value of the element at the specified ... cannot be assigned to the specified type Since: JPA 2.0 X get( TupleElement<X> tupleElement) Get the value of the specified tuple element. Get the value of the specified tuple element. Parameters: tupleElement


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


javax.persistence.criteria Interface Subquery<T> Superinterfaces: AbstractQuery<T>, Expression<T>, Selection<T>, TupleElement<T> The Subquery interface defines functionality that is specific to subqueries. A subquery has an expression as its selection item. Since: JPA 2.0 Selection<X> alias(String


javax.persistence.criteria Interface Join<Z,X> Superinterfaces: Expression<X>, FetchParent<Z,X>, From<Z,X>, Path<X>, Selection<X>, TupleElement<X> Subinterfaces: CollectionJoin, ListJoin, MapJoin, PluralJoin, SetJoin A join to an entity, embeddable, or basic type. Since: JPA 2.0 Learn how to use


javax.persistence.criteria Interface CriteriaBuilder.Coalesce<T> Superinterfaces: Expression<T>, Selection<T>, TupleElement<T> Interface used to build coalesce expressions. A coalesce expression is equivalent to a case expression that returns null if all its arguments evaluate to null


javax.persistence.criteria Interface CriteriaBuilder.Case<R> Superinterfaces: Expression<R>, Selection<R>, TupleElement<R> Interface used to build general case expressions. Case conditions are evaluated in the order in which they are specified. Since: JPA 2.0 Selection<X> alias(String name) Assigns

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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