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.BooleanOperatorParameterContainer.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, renderProjectiongetCompoundSelectionItems, isCompoundSelection, isNegated, notas, asBigDecimal, asBigInteger, asDouble, asFloat, asInteger, asLong, asString, in, in, in, in, isNotNull, isNullalias, getValueHandlersforceConversion, getAlias, getJavaType, getValueHandler, resetJavaType, setAliascriteriaBuilderclone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitas, in, in, in, in, isNotNull, isNullalias, getCompoundSelectionItems, isCompoundSelectiongetAlias, getJavaTypecriteriaBuildergetValueHandlersgetValueHandlerpublic 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()
UnaryOperatorExpressiongetOperand in interface UnaryOperatorExpression<Boolean>public void registerParameters(ParameterRegistry registry)
ParameterContainerregisterParameters in interface ParameterContainerregistry - The parameter registry with which to register.public String render(boolean isNegated, RenderingContext renderingContext)
PredicateImplementorRenderable.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 PredicateImplementorisNegated - Should the predicate be negated.renderingContext - The context for renderingCopyright © 2001-2015 Red Hat, Inc. All Rights Reserved.