org.hibernate.ejb.criteria.predicate
Class NullnessPredicate
java.lang.Object
org.hibernate.ejb.criteria.AbstractNode
org.hibernate.ejb.criteria.expression.AbstractTupleElement<X>
org.hibernate.ejb.criteria.expression.SelectionImpl<T>
org.hibernate.ejb.criteria.expression.ExpressionImpl<Boolean>
org.hibernate.ejb.criteria.predicate.AbstractPredicateImpl
org.hibernate.ejb.criteria.predicate.AbstractSimplePredicate
org.hibernate.ejb.criteria.predicate.NullnessPredicate
- All Implemented Interfaces:
- Serializable, javax.persistence.criteria.Expression<Boolean>, javax.persistence.criteria.Predicate, javax.persistence.criteria.Selection<Boolean>, TupleElement<Boolean>, UnaryOperatorExpression<Boolean>, ExpressionImplementor<Boolean>, ParameterContainer, Renderable, SelectionImplementor<Boolean>, TupleElementImplementor<Boolean>
public class NullnessPredicate
- extends AbstractSimplePredicate
- implements UnaryOperatorExpression<Boolean>, Serializable
Defines a Predicate
for checking the
nullness state of an expression, aka an IS [NOT] NULL predicate.
The NOT NULL form can be built by calling the constructor and then
calling AbstractPredicateImpl.not()
.
- Author:
- Steve Ebersole
- See Also:
- Serialized Form
Methods inherited from class org.hibernate.ejb.criteria.expression.ExpressionImpl |
as, asBigDecimal, asBigInteger, asDouble, asFloat, asInteger, asLong, asString, in, in, in, in, isNotNull, isNull |
Methods inherited from class java.lang.Object |
clone, 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.Selection |
alias, getCompoundSelectionItems, isCompoundSelection |
NullnessPredicate
public NullnessPredicate(CriteriaBuilderImpl criteriaBuilder,
javax.persistence.criteria.Expression<?> operand)
- Constructs the affirmitive form of nullness checking (IS NULL). To
construct the negative form (IS NOT NULL) call
AbstractPredicateImpl.not()
on the
constructed instance.
- Parameters:
criteriaBuilder
- The query builder from whcih this originates.operand
- The expression to check.
getOperand
public javax.persistence.criteria.Expression<?> getOperand()
- Description copied from interface:
UnaryOperatorExpression
- Get the operand.
- Specified by:
getOperand
in interface UnaryOperatorExpression<Boolean>
- Returns:
- The operand.
registerParameters
public void registerParameters(ParameterRegistry registry)
- Description copied from interface:
ParameterContainer
- Register any parameters contained within this query component with the given registry.
- Specified by:
registerParameters
in interface ParameterContainer
- Parameters:
registry
- The parameter registry with which to register.
render
public String render(CriteriaQueryCompiler.RenderingContext renderingContext)
- Specified by:
render
in interface Renderable
renderProjection
public String renderProjection(CriteriaQueryCompiler.RenderingContext renderingContext)
- Specified by:
renderProjection
in interface Renderable
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