org.hibernate.jpa.criteria.expression

Class DelegatedExpressionImpl<T>

java.lang.Object

org.hibernate.jpa.criteria.AbstractNode

org.hibernate.jpa.criteria.expression.AbstractTupleElement<X>

org.hibernate.jpa.criteria.expression.SelectionImpl<T>

org.hibernate.jpa.criteria.expression.ExpressionImpl<T>

org.hibernate.jpa.criteria.expression.DelegatedExpressionImpl<T>

All Implemented Interfaces:

Serializable, Expression<T>, Selection<T>, TupleElement<T>, ExpressionImplementor<T>, ParameterContainer, Renderable, SelectionImplementor<T>, TupleElementImplementor<T>

Direct Known Subclasses:

CriteriaSubqueryImpl.SubquerySelection

public abstract class DelegatedExpressionImpl<T>
extends ExpressionImpl<T>

Implementation of Expression wraps another Expression and delegates most of its functionality to that wrapped Expression

Author:

Steve Ebersole

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface org.hibernate.jpa.criteria.ParameterContainer

ParameterContainer.Helper

Constructor Summary

Constructors

Constructor and Description
DelegatedExpressionImpl(ExpressionImpl<T> wrapped)

Method Summary

Modifier and Type	Method and Description
Selection<T>	alias(String alias) Assigns an alias to the selection item.
protected void	forceConversion(ValueHandlerFactory.ValueHandler<T> tValueHandler)
String	getAlias() Return the alias assigned to the tuple element or null, if no alias has been assigned.
List<Selection<?>>	getCompoundSelectionItems() Return the selection items composing a compound selection.
Class<T>	getJavaType() Return the Java type of the tuple element.
ValueHandlerFactory.ValueHandler<T>	getValueHandler()
List<ValueHandlerFactory.ValueHandler>	getValueHandlers()
ExpressionImpl<T>	getWrapped()
boolean	isCompoundSelection() Whether the selection item is a compound selection.
void	registerParameters(ParameterRegistry registry) Register any parameters contained within this query component with the given registry.
protected void	resetJavaType(Class targetType)
protected void	setAlias(String alias) Protected access to define the alias.

Methods inherited from class org.hibernate.jpa.criteria.expression.ExpressionImpl

as, asBigDecimal, asBigInteger, asDouble, asFloat, asInteger, asLong, asString, in, in, in, in, isNotNull, isNull

Methods inherited from class org.hibernate.jpa.criteria.AbstractNode

criteriaBuilder

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.hibernate.jpa.criteria.Renderable

render, renderProjection

Constructor Detail

DelegatedExpressionImpl

public DelegatedExpressionImpl(ExpressionImpl<T> wrapped)

Method Detail

getWrapped

public ExpressionImpl<T> getWrapped()

registerParameters

public void registerParameters(ParameterRegistry registry)

Description copied from interface: ParameterContainer

Register any parameters contained within this query component with the given registry.

Parameters:

registry - The parameter registry with which to register.

alias

public Selection<T> alias(String alias)

Description copied from interface: Selection

Assigns an alias to the selection item. Once assigned, an alias cannot be changed or reassigned. Returns the same selection item.

Specified by:

alias in interface Selection<T>

Overrides:

alias in class SelectionImpl<T>

Parameters:

alias - alias

Returns:

selection item

isCompoundSelection

public boolean isCompoundSelection()

Description copied from interface: Selection

Whether the selection item is a compound selection.

Specified by:

isCompoundSelection in interface Selection<T>

Overrides:

isCompoundSelection in class SelectionImpl<T>

Returns:

boolean indicating whether the selection is a compound selection

getValueHandlers

public List<ValueHandlerFactory.ValueHandler> getValueHandlers()

Specified by:

getValueHandlers in interface SelectionImplementor<T>

Overrides:

getValueHandlers in class SelectionImpl<T>

getCompoundSelectionItems

public List<Selection<?>> getCompoundSelectionItems()

Description copied from interface: Selection

Return the selection items composing a compound selection. Modifications to the list do not affect the query.

Specified by:

getCompoundSelectionItems in interface Selection<T>

Overrides:

getCompoundSelectionItems in class SelectionImpl<T>

Returns:

list of selection items

getJavaType

public Class<T> getJavaType()

Description copied from interface: TupleElement

Return the Java type of the tuple element.

Specified by:

getJavaType in interface TupleElement<T>

Overrides:

getJavaType in class AbstractTupleElement<T>

Returns:

the Java type of the tuple element

resetJavaType

protected void resetJavaType(Class targetType)

Overrides:

resetJavaType in class AbstractTupleElement<T>

forceConversion

protected void forceConversion(ValueHandlerFactory.ValueHandler<T> tValueHandler)

Overrides:

forceConversion in class AbstractTupleElement<T>

getValueHandler

public ValueHandlerFactory.ValueHandler<T> getValueHandler()

Specified by:

getValueHandler in interface TupleElementImplementor<T>

Overrides:

getValueHandler in class AbstractTupleElement<T>

getAlias

public String getAlias()

Description copied from interface: TupleElement

Return the alias assigned to the tuple element or null, if no alias has been assigned.

Specified by:

getAlias in interface TupleElement<T>

Overrides:

getAlias in class AbstractTupleElement<T>

Returns:

alias

setAlias

protected void setAlias(String alias)

Description copied from class: AbstractTupleElement

Protected access to define the alias.

Overrides:

setAlias in class AbstractTupleElement<T>

Parameters:

alias - The alias to use.