Interface PluralJoin<Z,C,E>

Type Parameters:

Z - the source type

C - the collection type

E - the element type of the collection

All Superinterfaces:

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

All Known Subinterfaces:

CollectionJoin<Z,E>, ListJoin<Z,E>, MapJoin<Z,K,V>, SetJoin<Z,E>

public interface PluralJoin<Z,C,E>
extends Join<Z,E>

The PluralJoin interface defines functionality that is common to joins to all collection types. It is not intended to be used directly in query construction.

Since:

2.0

Method Summary

Modifier and Type	Method	Description
PluralAttribute<? super Z, C, E>	getModel()	Return the metamodel representation for the collection-valued attribute corresponding to the join.
<T extends E> PluralJoin<Z,?,T>	treat(Class<T> type)	Downcast the element type to the given type.

Methods inherited from interface Expression

as, cast, coalesce, coalesce, count, countDistinct, equalTo, equalTo, in, in, in, in, in, isMember, isNotMember, isNotNull, isNull, notEqualTo, notEqualTo, nullif, nullif, selectCase

Methods inherited from interface FetchParent

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

Methods inherited from interface From

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

Methods inherited from interface Join

getAttribute, getJoinType, getOn, getParent, on, on, on

Methods inherited from interface Path

get, get, get, get, get, get, get, get, get, getParentPath, type

Methods inherited from interface Selection

alias, getCompoundSelectionItems, isCompoundSelection

Methods inherited from interface TupleElement

getAlias, getJavaType

Method Details

getModel

@Nonnull
PluralAttribute<? super Z, C, E> getModel()

Return the metamodel representation for the collection-valued attribute corresponding to the join.

Specified by:

getModel in interface Path<Z>

Returns:

metamodel collection-valued attribute corresponding to the target of the join

treat

@Nonnull
<T extends E> PluralJoin<Z,?,T> treat(@Nonnull
 Class<T> type)

Downcast the element type to the given type.

Specified by:

treat in interface From<Z,C>

Specified by:

treat in interface Join<Z,C>

Specified by:

treat in interface Path<Z>

Type Parameters:

T - the subtype of the element type

Parameters:

type - a subtype of the element type

Returns:

this plural join downcast to the given element type

Since:

4.0