Fast Object Database for Java - with JPA/JDO support

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104

get(tupleElement)

Method javax.persistence.Tuple X get( TupleElement 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
102

javax.persistence.TupleElement

javax.persistence Interface TupleElement 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
99

getAlias()

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
99

getJavaType()

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
34

Criteria Query Selection and Results

Reference (JavaDoc) of JPA query criteria result interfaces, including Selection, CompoundSelection, Order and Tuple.
14

javax.persistence.Tuple

. 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 tupleElement) Get the value of the specified tuple element. Get the value of the specified tuple element. Parameters: tupleElement
6

javax.persistence.criteria.From

javax.persistence.criteria Interface From Superinterfaces: Expression, FetchParent, Path, Selection, TupleElement Subinterfaces: CollectionJoin, Join, ListJoin, MapJoin, PluralJoin, Root, SetJoin Represents a bound type, usually an entity that appears in the from clause
6

javax.persistence.criteria.Join

javax.persistence.criteria Interface Join Superinterfaces: Expression, FetchParent, From, Path, Selection, TupleElement Subinterfaces: CollectionJoin, ListJoin, MapJoin, PluralJoin, SetJoin A join to an entity, embeddable, or basic type. Since: JPA 2.0 Learn how to use
6

javax.persistence.criteria.ListJoin

javax.persistence.criteria Interface ListJoin Superinterfaces: Expression, FetchParent, From, Join, Path, PluralJoin,E>, Selection, TupleElement The ListJoin interface is the type of the result of joining to a collection over an association or element
6

javax.persistence.criteria.MapJoin

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

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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