Module org.eclipse.persistence.jpa

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

Class CompoundSelectionImpl<X>

java.lang.Object

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

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

Type Parameters:

X - the type of the selection item

All Implemented Interfaces:

CompoundSelection<X>, Selection<X>, TupleElement<X>, Serializable, InternalSelection

Direct Known Subclasses:

ConstructorSelectionImpl

public class CompoundSelectionImpl<X>
extends SelectionImpl<X>
implements CompoundSelection<X>

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

Description: The Selection is the expression describing what should be returned by the query.

Since:

EclipseLink 1.2

See Also:

• Join
• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected ArrayList<String>	duplicateAliasNames
protected ArrayList<Selection<?>>	subSelections

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

alias, currentNode, javaType

Constructor Summary

Constructors

Constructor	Description
CompoundSelectionImpl(Class<? extends X> javaType, Selection<?>[] subSelections)
CompoundSelectionImpl(Class<? extends X> javaType, Selection<?>[] subSelections, boolean validate)

Method Summary

Modifier and Type	Method	Description
void	findRootAndParameters(CommonAbstractCriteriaImpl<?> criteriaQuery)
List<Selection<?>>	getCompoundSelectionItems()	Return selection items composing a compound selection
protected List<String>	getDuplicateAliasNames()	Returns the collection used to store any duplicate alias names found within this CompoundSelection Item
boolean	isCompoundSelection()	Whether the selection item is a compound selection

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

alias, getAlias, getCurrentNode, getJavaType, isConstructor, isFrom, isRoot, setJavaType

Methods inherited from class java.lang.Object

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

Methods inherited from interface jakarta.persistence.criteria.Selection

alias

Methods inherited from interface jakarta.persistence.TupleElement

getAlias, getJavaType

Field Details

subSelections

protected ArrayList<Selection<?>> subSelections

duplicateAliasNames

protected ArrayList<String> duplicateAliasNames

Constructor Details

CompoundSelectionImpl

public CompoundSelectionImpl(Class<? extends X> javaType,
 Selection<?>[] subSelections)

CompoundSelectionImpl

public CompoundSelectionImpl(Class<? extends X> javaType,
 Selection<?>[] subSelections,
 boolean validate)

Method Details

isCompoundSelection

public boolean isCompoundSelection()

Whether the selection item is a compound selection

Specified by:

isCompoundSelection in interface Selection<X>

Overrides:

isCompoundSelection in class SelectionImpl<X>

Returns:

boolean

getCompoundSelectionItems

public List<Selection<?>> getCompoundSelectionItems()

Return selection items composing a compound selection

Specified by:

getCompoundSelectionItems in interface Selection<X>

Overrides:

getCompoundSelectionItems in class SelectionImpl<X>

Returns:

list of selection items

Throws:

IllegalStateException - if selection is not a compound selection

getDuplicateAliasNames

protected List<String> getDuplicateAliasNames()

Returns the collection used to store any duplicate alias names found within this CompoundSelection Item

Returns:

list of alias Strings.

findRootAndParameters

public void findRootAndParameters(CommonAbstractCriteriaImpl<?> criteriaQuery)

Specified by:

findRootAndParameters in interface InternalSelection