Module org.eclipse.persistence.jpa

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

Class PathImpl<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>

All Implemented Interfaces:

Expression<X>, Path<X>, Selection<X>, TupleElement<X>, Serializable, Cloneable, InternalExpression, InternalSelection

Direct Known Subclasses:

FromImpl

public class PathImpl<X>
extends ExpressionImpl<X>
implements Path<X>, Cloneable

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

Description: This class represents an abstract path which is a model of the expression through joins.

Since:

EclipseLink 1.2

See Also:

• Path
• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected Object	modelArtifact
protected Path<?>	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
PathImpl(Path<?> parent, Metamodel metamodel, Class<X> javaClass, Expression expressionNode, Bindable modelArtifact)

Method Summary

Modifier and Type	Method	Description
protected Object	clone()
void	findRootAndParameters(CommonAbstractCriteriaImpl query)
<K, V, M extends Map<K, V>> Expression<M>	get(MapAttribute<X,K,V> map)	Return the path corresponding to the referenced map-valued attribute.
<E, C extends Collection<E>> Expression<C>	get(PluralAttribute<X,C,E> collection)	Return the path corresponding to the referenced collection-valued attribute.
<Y> Path<Y>	get(SingularAttribute<? super X,Y> att)	Return the path corresponding to the referenced non-collection valued attribute.
<Y> Path<Y>	get(String attName)
Bindable<X>	getModel()	Return the bindable object that corresponds to the path expression.
Path<?>	getParentPath()	Return the parent "node" in the path.
Expression<Class<? extends X>>	type()	Return an expression corresponding to the type of the path.

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

as, buildExpressionForAs, 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, isFrom, isRoot, setJavaType

Methods inherited from class java.lang.Object

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

Methods inherited from interface jakarta.persistence.criteria.Expression

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

Methods inherited from interface jakarta.persistence.criteria.Selection

alias, getCompoundSelectionItems, isCompoundSelection

Methods inherited from interface jakarta.persistence.TupleElement

getAlias, getJavaType

Field Details

pathParent

protected Path<?> pathParent

modelArtifact

protected Object modelArtifact

Constructor Details

PathImpl

public PathImpl(Path<?> parent,
 Metamodel metamodel,
 Class<X> javaClass,
 Expression expressionNode,
 Bindable modelArtifact)

Method Details

getModel

public Bindable<X> getModel()

Return the bindable object that corresponds to the path expression.

Specified by:

getModel in interface Path<X>

Returns:

bindable object corresponding to the path

getParentPath

public Path<?> getParentPath()

Return the parent "node" in the path.

Specified by:

getParentPath in interface Path<X>

Returns:

parent

get

public <Y> Path<Y> get(SingularAttribute<? super X,Y> att)

Return the path corresponding to the referenced non-collection valued attribute.

Specified by:

get in interface Path<X>

Parameters:

att - attribute

Returns:

path corresponding to the referenced attribute

get

public <E,
C extends Collection<E>> Expression<C> get(PluralAttribute<X,C,E> collection)

Return the path corresponding to the referenced collection-valued attribute.

Specified by:

get in interface Path<X>

Parameters:

collection - collection-valued attribute

Returns:

expression corresponding to the referenced attribute

get

public <K,
V,
M extends Map<K,
V>> Expression<M> get(MapAttribute<X,K,V> map)

Return the path corresponding to the referenced map-valued attribute.

Specified by:

get in interface Path<X>

Parameters:

map - map-valued attribute

Returns:

expression corresponding to the referenced attribute

type

public Expression<Class<? extends X>> type()

Return an expression corresponding to the type of the path.

Specified by:

type in interface Path<X>

Returns:

expression corresponding to the type of the path

get

public <Y> Path<Y> get(String attName)

Specified by:

get in interface Path<X>

findRootAndParameters

public void findRootAndParameters(CommonAbstractCriteriaImpl query)

Specified by:

findRootAndParameters in interface InternalSelection

Overrides:

findRootAndParameters in class ExpressionImpl<X>

clone

protected Object clone()

Overrides:

clone in class Object