Fast Object Database for Java - with JPA/JDO support

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121

javax.persistence.criteria.CompoundSelection

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

). Multi Selection The Selection interface is also a super interface of CompoundSelection ... clause). The CriteriaBuilder interface provides three factory methods for building CompoundSelection ... a CompoundSelection instance, which represents results as arrays. The following code demonstrates execution
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Criteria Query Selection and Results

expressions can be represented by CompoundSelection, which is itself a subinterface of Selection
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javax.persistence.criteria.CriteriaBuilder

CompoundSelection array( Selection... selections) Create an array-valued selection item. Create ... conjuncts is true. Returns: and predicate Since: JPA 2.0 CompoundSelection construct(ClassCompoundSelection< Tuple> tuple( Selection
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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
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array(selections)

Method javax.persistence.criteria.CriteriaBuilder CompoundSelection array( Selection... selections ) Create an array-valued selection item. Parameters: selections - selection items Returns: array-valued compound selection Throws: IllegalArgumentException - if an argument is a tuple- or array-valued selection item Since: JPA 2.0
8

javax.persistence.criteria.Selection

javax.persistence.criteria Interface Selection Superinterfaces: TupleElement Subinterfaces: CollectionJoin, CompoundSelection, Case, Coalesce, In, SimpleCase, Expression, From, Join, ListJoin, MapJoin, ParameterExpression, Path, PluralJoin, Predicate, Root, SetJoin, Subquery The Selection
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construct(resultClass, selections)

Method javax.persistence.criteria.CriteriaBuilder CompoundSelection construct( Class resultClass, Selection... selections ) Create a selection item corresponding to a constructor. This method is used to specify a constructor that will be applied to the results of the query execution
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construct(resultClass, selections)

Method javax.persistence.criteria.CriteriaBuilder CompoundSelection construct( Class resultClass, Selection[] selections ) Create a selection item corresponding to a constructor. This method is used to specify a constructor that will be applied to the results of the query execution
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tuple(selections)

Method javax.persistence.criteria.CriteriaBuilder CompoundSelection tuple( Selection... selections ) Create a tuple-valued selection item. Parameters: selections - selection items Returns: tuple-valued compound selection Throws: IllegalArgumentException - if an argument is a tuple- or array-valued selection item Since: JPA 2.0

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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