org.datanucleus.api.jpa.criteria

Class JoinImpl<Z,X>

java.lang.Object

org.datanucleus.api.jpa.criteria.ExpressionImpl<X>

org.datanucleus.api.jpa.criteria.PathImpl<Z,X>

org.datanucleus.api.jpa.criteria.FromImpl<Z,X>

org.datanucleus.api.jpa.criteria.JoinImpl<Z,X>

Type Parameters:

Z - type from which joining

X - type of the attribute being joined

All Implemented Interfaces:

Serializable, javax.persistence.criteria.Expression<X>, javax.persistence.criteria.FetchParent<Z,X>, javax.persistence.criteria.From<Z,X>, javax.persistence.criteria.Join<Z,X>, javax.persistence.criteria.Path<X>, javax.persistence.criteria.Selection<X>, javax.persistence.TupleElement<X>

Direct Known Subclasses:

PluralJoinImpl

public class JoinImpl<Z,X>
extends FromImpl<Z,X>
implements javax.persistence.criteria.Join<Z,X>

Implementation of JPA2 Criteria "Join".

See Also:

Serialized Form

Field Summary

Fields inherited from class org.datanucleus.api.jpa.criteria.FromImpl

fetchJoins, joins, type

Fields inherited from class org.datanucleus.api.jpa.criteria.PathImpl

attribute, parent

Constructor Summary

Constructors

Constructor and Description
JoinImpl(FromImpl<?,Z> parent, PluralAttributeImpl<? super Z,Collection<X>,X> attr, javax.persistence.criteria.JoinType joinType) Constructor for a join to a collection (1-N, M-N relations).
JoinImpl(FromImpl<?,Z> parent, SingularAttributeImpl<Z,X> attr, javax.persistence.criteria.JoinType joinType) Constructor for a join to an entity (1-1, N-1 relations).

Method Summary

Methods

Modifier and Type	Method and Description
javax.persistence.metamodel.Attribute<? super Z,?>	getAttribute()
javax.persistence.criteria.JoinType	getJoinType()
javax.persistence.criteria.From<?,Z>	getParent()

Methods inherited from class org.datanucleus.api.jpa.criteria.FromImpl

fetch, fetch, fetch, fetch, fetch, fetch, getAttributeForAttributeName, getAttributeType, getCorrelationParent, getFetches, getJoins, getQueryExpression, getQueryExpression, isCorrelated, join, join, join, join, join, join, join, join, join, join, join, join, joinCollection, joinCollection, joinList, joinList, joinMap, joinMap, joinSet, joinSet, toString, toString

Methods inherited from class org.datanucleus.api.jpa.criteria.PathImpl

get, get, get, get, getModel, getParentPath, getType, type

Methods inherited from class org.datanucleus.api.jpa.criteria.ExpressionImpl

alias, as, getAlias, getCompoundSelectionItems, getJavaType, in, in, in, in, isCompoundSelection, isNotNull, isNull

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

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.Path

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

Methods inherited from interface javax.persistence.criteria.Expression

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

Methods inherited from interface javax.persistence.criteria.Selection

alias, getCompoundSelectionItems, isCompoundSelection

Methods inherited from interface javax.persistence.TupleElement

getAlias, getJavaType

Methods inherited from interface javax.persistence.criteria.FetchParent

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

Constructor Detail

JoinImpl

public JoinImpl(FromImpl<?,Z> parent,
        SingularAttributeImpl<Z,X> attr,
        javax.persistence.criteria.JoinType joinType)

Constructor for a join to an entity (1-1, N-1 relations).

Parameters:

parent - Parent object

attr - The type joining to

joinType - Type of join (Inner/LeftOuter/RightOuter)

JoinImpl

public JoinImpl(FromImpl<?,Z> parent,
        PluralAttributeImpl<? super Z,Collection<X>,X> attr,
        javax.persistence.criteria.JoinType joinType)

Constructor for a join to a collection (1-N, M-N relations).

Parameters:

parent - Parent object

attr - The type joining to

joinType - Type of join (Inner/LeftOuter/RightOuter)

Method Detail

getAttribute

public javax.persistence.metamodel.Attribute<? super Z,?> getAttribute()

Specified by:

getAttribute in interface javax.persistence.criteria.Join<Z,X>

getJoinType

public javax.persistence.criteria.JoinType getJoinType()

Specified by:

getJoinType in interface javax.persistence.criteria.Join<Z,X>

getParent

public javax.persistence.criteria.From<?,Z> getParent()

Specified by:

getParent in interface javax.persistence.criteria.Join<Z,X>