About join

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JDO Doc
3

Element.generateForeignKey

Annotation Element javax.jdo.annotations.Element String generateForeignKey Generate or assume a foreign key constraint exists on the column or columns associated with this join. Specify "true" or "false". Returns: whether to generate or assume a primary key constraint Default value: "" Since: JDO 2.1
JPA Doc
3

getModel()

Method javax.persistence.criteria.CollectionJoin CollectionAttribute getModel() Return the metamodel representation for the collection attribute. Returns: metamodel type representing the Collection that is the target of the join Since: JPA 2.0
JPA Doc
3

getModel()

Method javax.persistence.criteria.ListJoin ListAttribute getModel() Return the metamodel representation for the list attribute. Returns: metamodel type representing the List that is the target of the join Since: JPA 2.0
JPA Doc
3

getModel()

Method javax.persistence.criteria.MapJoin MapAttribute getModel() Return the metamodel representation for the map attribute. Returns: metamodel type representing the Map that is the target of the join Since: JPA 2.0
JPA Doc
3

getModel()

Method javax.persistence.criteria.SetJoin SetAttribute getModel() Return the metamodel representation for the set attribute. Returns: metamodel type representing the Set that is the target of the join Since: JPA 2.0
JPA Doc
3

javax.persistence.criteria.AbstractQuery

entities (which may in turn own joins). All queries may have: a conjunction of restrictions
JPA Doc
3

javax.persistence.criteria.Expression

javax.persistence.criteria Interface Expression Superinterfaces: Selection, TupleElement Subinterfaces: CollectionJoin, Case, Coalesce, In, SimpleCase, From, Join, ListJoin, MapJoin, ParameterExpression, Path, PluralJoin, Predicate, Root, SetJoin, Subquery Type for query expressions
JPA Doc
3

javax.persistence.criteria.Path

javax.persistence.criteria Interface Path Superinterfaces: Expression, Selection, TupleElement Subinterfaces: CollectionJoin, From, Join, ListJoin, MapJoin, PluralJoin, Root, SetJoin Represents a simple or compound attribute path from a bound type or collection, and is a "primitive
JPA Doc
3

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
JPA Doc
3

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