Top Description Fields Constructors Methods
org.hibernate.query.criteria.internal.predicate

public Class ExplicitTruthValueCheck

extends AbstractSimplePredicate
implements Serializable
Class Inheritance
All Implemented Interfaces
java.io.Serializable
Imports
java.io.Serializable, javax.persistence.criteria.Expression, org.hibernate.query.criteria.internal.CriteriaBuilderImpl, .ParameterRegistry, .Renderable, org.hibernate.query.criteria.internal.compile.RenderingContext
ANSI-SQL defines TRUE, FALSE and UNKNOWN as truth values. These truth values are used to explicitly check the result of a boolean expression (the syntax is like a > b IS TRUE. IS TRUE is the assumed default.

JPA defines support for only IS TRUE and IS FALSE, not IS UNKNOWN (a > NULL is an example where the result would be UNKNOWN.

Author
Steve Ebersole

Field Summary

Modifier and TypeField and Description
private final Expression<Boolean>
booleanExpression

private final TruthValue
truthValue

Constructor Summary

AccessConstructor and Description
public
ExplicitTruthValueCheck(CriteriaBuilderImpl criteriaBuilder, Expression<Boolean> booleanExpression, TruthValue truthValue)

Method Summary

Modifier and TypeMethod and Description
public Expression<Boolean>
getBooleanExpression()

public TruthValue
getTruthValue()

public void
registerParameters(ParameterRegistry
The parameter registry with which to register.
registry)

Implements org.hibernate.query.criteria.internal.ParameterContainer.registerParameters.

Register any parameters contained within this query component with the given registry.
public String
render(boolean
Should the predicate be negated.
isNegated, RenderingContext
The context for rendering
renderingContext)

Implements org.hibernate.query.criteria.internal.predicate.PredicateImplementor.render.

Form of Renderable#render used when the predicate is wrapped in a negated wrapper.
Inherited from org.hibernate.query.criteria.internal.predicate.AbstractSimplePredicate:
getExpressionsgetOperatorisJunctionrender

Field Detail

booleanExpressionback to summary
private final Expression<Boolean> booleanExpression
truthValueback to summary
private final TruthValue truthValue

Constructor Detail

ExplicitTruthValueCheckback to summary
public ExplicitTruthValueCheck(CriteriaBuilderImpl criteriaBuilder, Expression<Boolean> booleanExpression, TruthValue truthValue)

Method Detail

getBooleanExpressionback to summary
public Expression<Boolean> getBooleanExpression()
getTruthValueback to summary
public TruthValue getTruthValue()
registerParametersback to summary
public void registerParameters(ParameterRegistry registry)

Implements org.hibernate.query.criteria.internal.ParameterContainer.registerParameters.

Doc from org.hibernate.query.criteria.internal.ParameterContainer.registerParameters.

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

Parameters
registry:ParameterRegistry

The parameter registry with which to register.

Annotations
@Override
renderback to summary
public String render(boolean isNegated, RenderingContext renderingContext)

Implements org.hibernate.query.criteria.internal.predicate.PredicateImplementor.render.

Doc from org.hibernate.query.criteria.internal.predicate.PredicateImplementor.render.

Form of Renderable#render 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.

Parameters
isNegated:boolean

Should the predicate be negated.

renderingContext:RenderingContext

The context for rendering

Returns:String

The rendered predicate fragment.

Annotations
@Override