Package org.eclipse.persistence.internal.jpa.querydef

Class JoinImpl<Z,X>

java.lang.Object

org.eclipse.persistence.internal.jpa.querydef.SelectionImpl<X>

org.eclipse.persistence.internal.jpa.querydef.ExpressionImpl<X>

org.eclipse.persistence.internal.jpa.querydef.PathImpl<X>

org.eclipse.persistence.internal.jpa.querydef.FromImpl<Z,X>

org.eclipse.persistence.internal.jpa.querydef.JoinImpl<Z,X>

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, javax.persistence.criteria.Expression<X>, javax.persistence.criteria.Fetch<Z,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>, InternalExpression, InternalSelection

Direct Known Subclasses:

CollectionJoinImpl, ListJoinImpl, MapJoinImpl, SetJoinImpl

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

Purpose: Contains the implementation of the Join interface of the JPA criteria API.

Description: This class represents a join of an attribute from a "From"element.

Since:

EclipseLink 1.2

Author:

gyorke

See Also:

Join, Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected javax.persistence.criteria.JoinType	joinType
protected javax.persistence.criteria.Expression<java.lang.Boolean>	on

Fields inherited from class org.eclipse.persistence.internal.jpa.querydef.FromImpl

correlatedParent, fetches, isFetch, isJoin, joins, managedType

Fields inherited from class org.eclipse.persistence.internal.jpa.querydef.PathImpl

modelArtifact, pathParent

Fields inherited from class org.eclipse.persistence.internal.jpa.querydef.ExpressionImpl

isLiteral, literal, metamodel

Fields inherited from class org.eclipse.persistence.internal.jpa.querydef.SelectionImpl

alias, currentNode, javaType

Constructor Summary

Constructors

Constructor	Description
JoinImpl(javax.persistence.criteria.Path<Z> parentPath, javax.persistence.metamodel.ManagedType managedType, javax.persistence.metamodel.Metamodel metamodel, java.lang.Class<X> javaClass, org.eclipse.persistence.expressions.Expression expressionNode, javax.persistence.metamodel.Bindable<T> modelArtifact)
JoinImpl(javax.persistence.criteria.Path<Z> parentPath, javax.persistence.metamodel.ManagedType managedType, javax.persistence.metamodel.Metamodel metamodel, java.lang.Class<X> javaClass, org.eclipse.persistence.expressions.Expression expressionNode, javax.persistence.metamodel.Bindable<T> modelArtifact, javax.persistence.criteria.JoinType joinType)
JoinImpl(javax.persistence.criteria.Path<Z> parentPath, javax.persistence.metamodel.ManagedType managedType, javax.persistence.metamodel.Metamodel metamodel, java.lang.Class<X> javaClass, org.eclipse.persistence.expressions.Expression expressionNode, javax.persistence.metamodel.Bindable<T> modelArtifact, javax.persistence.criteria.JoinType joinType, FromImpl correlatedParent)

Method Summary

Modifier and Type	Method	Description
protected <T> javax.persistence.criteria.Expression<T>	buildExpressionForAs(java.lang.Class<T> type)
javax.persistence.metamodel.Attribute<? super Z,?>	getAttribute()	Return the metamodel Attribute corresponding to the join.
javax.persistence.criteria.JoinType	getJoinType()	Return the join type.
javax.persistence.criteria.Predicate	getOn()
javax.persistence.criteria.From<?,Z>	getParent()	Return the parent of the join.
JoinImpl<Z,X>	on(javax.persistence.criteria.Expression<java.lang.Boolean> restriction)
JoinImpl<Z,X>	on(javax.persistence.criteria.Predicate... restrictions)

Methods inherited from class org.eclipse.persistence.internal.jpa.querydef.FromImpl

fetch, fetch, fetch, fetch, fetch, fetch, findJoinFetches, findJoins, get, get, get, get, getCorrelationParent, getFetches, getJoins, isCorrelated, isFrom, join, join, join, join, join, join, join, join, join, join, join, join, joinCollection, joinCollection, joinList, joinList, joinMap, joinMap, joinSet, joinSet, type

Methods inherited from class org.eclipse.persistence.internal.jpa.querydef.PathImpl

clone, findRootAndParameters, getModel, getParentPath

Methods inherited from class org.eclipse.persistence.internal.jpa.querydef.ExpressionImpl

as, in, in, in, in, isCompoundExpression, isExpression, isJunction, isLiteral, isNotNull, isNull, isParameter, isPredicate, isSubquery

Methods inherited from class org.eclipse.persistence.internal.jpa.querydef.SelectionImpl

alias, getAlias, getCompoundSelectionItems, getCurrentNode, getJavaType, isCompoundSelection, isConstructor, isRoot, setJavaType

Methods inherited from class java.lang.Object

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

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.Path

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

Methods inherited from interface javax.persistence.criteria.Selection

alias, getCompoundSelectionItems, isCompoundSelection

Methods inherited from interface javax.persistence.TupleElement

getAlias, getJavaType

Field Detail

joinType

protected javax.persistence.criteria.JoinType joinType

on

protected javax.persistence.criteria.Expression<java.lang.Boolean> on

Constructor Detail

JoinImpl

public JoinImpl(javax.persistence.criteria.Path<Z> parentPath,
                javax.persistence.metamodel.ManagedType managedType,
                javax.persistence.metamodel.Metamodel metamodel,
                java.lang.Class<X> javaClass,
                org.eclipse.persistence.expressions.Expression expressionNode,
                javax.persistence.metamodel.Bindable<T> modelArtifact)

JoinImpl

public JoinImpl(javax.persistence.criteria.Path<Z> parentPath,
                javax.persistence.metamodel.ManagedType managedType,
                javax.persistence.metamodel.Metamodel metamodel,
                java.lang.Class<X> javaClass,
                org.eclipse.persistence.expressions.Expression expressionNode,
                javax.persistence.metamodel.Bindable<T> modelArtifact,
                javax.persistence.criteria.JoinType joinType)

JoinImpl

public JoinImpl(javax.persistence.criteria.Path<Z> parentPath,
                javax.persistence.metamodel.ManagedType managedType,
                javax.persistence.metamodel.Metamodel metamodel,
                java.lang.Class<X> javaClass,
                org.eclipse.persistence.expressions.Expression expressionNode,
                javax.persistence.metamodel.Bindable<T> modelArtifact,
                javax.persistence.criteria.JoinType joinType,
                FromImpl correlatedParent)

Method Detail

getAttribute

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

Return the metamodel Attribute corresponding to the join.

Specified by:

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

Specified by:

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

Returns:

metamodel Attribute type for the join

getParent

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

Return the parent of the join.

Specified by:

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

Specified by:

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

Returns:

join parent

getJoinType

public javax.persistence.criteria.JoinType getJoinType()

Return the join type.

Specified by:

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

Specified by:

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

Returns:

join type

buildExpressionForAs

protected <T> javax.persistence.criteria.Expression<T> buildExpressionForAs(java.lang.Class<T> type)

Overrides:

buildExpressionForAs in class ExpressionImpl<X>

getOn

public javax.persistence.criteria.Predicate getOn()

Specified by:

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

on

public JoinImpl<Z,X> on(javax.persistence.criteria.Expression<java.lang.Boolean> restriction)

Specified by:

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

on

public JoinImpl<Z,X> on(javax.persistence.criteria.Predicate... restrictions)

Specified by:

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