Package javax.persistence.criteria

Interface ListJoin<Z,E>

Type Parameters:

Z - the source type of the join

E - the element type of the target List

All Superinterfaces:

Expression<E>, FetchParent<Z,E>, From<Z,E>, Join<Z,E>, Path<E>, PluralJoin<Z,List<E>,E>, Selection<E>, TupleElement<E>

public interface ListJoin<Z,E>
extends PluralJoin<Z,List<E>,E>

The ListJoin interface is the type of the result of joining to a collection over an association or element collection that has been specified as a java.util.List.

Since:

Java Persistence 2.0

Method Summary

Modifier and Type	Method	Description
ListAttribute<? super Z,E>	getModel()	Return the metamodel representation for the list attribute.
Expression<Integer>	index()	Create an expression that corresponds to the index of the object in the referenced association or element collection.
ListJoin<Z,E>	on(Expression<Boolean> restriction)	Modify the join to restrict the result according to the specified ON condition and return the join object.
ListJoin<Z,E>	on(Predicate... restrictions)	Modify the join to restrict the result according to the specified ON condition and return the join object.

Methods inherited from interface javax.persistence.criteria.Expression

as, in, in, in, in, isNotNull, isNull

Methods inherited from interface javax.persistence.criteria.FetchParent

fetch, fetch, fetch, fetch, fetch, fetch, getFetches

Methods inherited from interface javax.persistence.criteria.From

getCorrelationParent, getJoins, isCorrelated, join, join, join, join, join, join, join, join, join, join, join, join, joinCollection, joinCollection, joinList, joinList, joinMap, joinMap, joinSet, joinSet

Methods inherited from interface javax.persistence.criteria.Join

getAttribute, getJoinType, getOn, getParent

Methods inherited from interface javax.persistence.criteria.Path

get, get, get, get, getParentPath, type

Methods inherited from interface javax.persistence.criteria.Selection

alias, getCompoundSelectionItems, isCompoundSelection

Methods inherited from interface javax.persistence.TupleElement

getAlias, getJavaType

Method Details

on

ListJoin<Z,E> on(Expression<Boolean> restriction)

Modify the join to restrict the result according to the specified ON condition and return the join object. Replaces the previous ON condition, if any.

Specified by:

on in interface Join<Z,E>

Parameters:

restriction - a simple or compound boolean expression

Returns:

the modified join object

Since:

Java Persistence 2.1

on

ListJoin<Z,E> on(Predicate... restrictions)

Modify the join to restrict the result according to the specified ON condition and return the join object. Replaces the previous ON condition, if any.

Specified by:

on in interface Join<Z,E>

Parameters:

restrictions - zero or more restriction predicates

Returns:

the modified join object

Since:

Java Persistence 2.1

getModel

ListAttribute<? super Z,E> getModel()

Return the metamodel representation for the list attribute.

Specified by:

getModel in interface Path<Z>

Specified by:

getModel in interface PluralJoin<Z,List<E>,E>

Returns:

metamodel type representing the List that is the target of the join

index

Expression<Integer> index()

Create an expression that corresponds to the index of the object in the referenced association or element collection. This method must only be invoked upon an object that represents an association or element collection for which an order column has been defined.

Returns:

expression denoting the index