public class NullnessPredicate extends AbstractSimplePredicate implements UnaryOperatorExpression<Boolean>, Serializable
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()
.Predicate.BooleanOperator
ParameterContainer.Helper
Constructor and Description |
---|
NullnessPredicate(CriteriaBuilderImpl criteriaBuilder,
Expression<?> operand)
Constructs the affirmitive form of nullness checking (IS NULL).
|
Modifier and Type | Method and Description |
---|---|
Expression<?> |
getOperand()
Get the operand.
|
void |
registerParameters(ParameterRegistry registry)
Register any parameters contained within this query component with the given registry.
|
String |
render(boolean isNegated,
RenderingContext renderingContext)
Form of
Renderable.render(org.hibernate.jpa.criteria.compile.RenderingContext) used when the predicate is wrapped in a negated wrapper. |
getExpressions, getOperator, isJunction, render, renderProjection
getCompoundSelectionItems, isCompoundSelection, isNegated, not
as, asBigDecimal, asBigInteger, asDouble, asFloat, asInteger, asLong, asString, in, in, in, in, isNotNull, isNull
alias, getValueHandlers
forceConversion, getAlias, getJavaType, getValueHandler, resetJavaType, setAlias
criteriaBuilder
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
as, in, in, in, in, isNotNull, isNull
alias, getCompoundSelectionItems, isCompoundSelection
getAlias, getJavaType
criteriaBuilder
getValueHandlers
getValueHandler
public NullnessPredicate(CriteriaBuilderImpl criteriaBuilder, Expression<?> operand)
AbstractPredicateImpl.not()
on the
constructed instance.criteriaBuilder
- The query builder from whcih this originates.operand
- The expression to check.public Expression<?> getOperand()
UnaryOperatorExpression
getOperand
in interface UnaryOperatorExpression<Boolean>
public void registerParameters(ParameterRegistry registry)
ParameterContainer
registerParameters
in interface ParameterContainer
registry
- The parameter registry with which to register.public String render(boolean isNegated, RenderingContext renderingContext)
PredicateImplementor
Renderable.render(org.hibernate.jpa.criteria.compile.RenderingContext)
used when the predicate is wrapped in a negated wrapper. Allows passing
down the negation flag.
Note that this form is no-op in compound (junction) predicates. The reason being that compound predicates
are more complex and the negation is applied during its creation.render
in interface PredicateImplementor
isNegated
- Should the predicate be negated.renderingContext
- The context for renderingCopyright © 2016 JBoss by Red Hat. All rights reserved.