org.hibernate.ejb.criteria.predicate
Class ExplicitTruthValueCheck

java.lang.Object
  extended by org.hibernate.ejb.criteria.AbstractNode
      extended by org.hibernate.ejb.criteria.expression.AbstractTupleElement<X>
          extended by org.hibernate.ejb.criteria.expression.SelectionImpl<T>
              extended by org.hibernate.ejb.criteria.expression.ExpressionImpl<Boolean>
                  extended by org.hibernate.ejb.criteria.predicate.AbstractPredicateImpl
                      extended by org.hibernate.ejb.criteria.predicate.AbstractSimplePredicate
                          extended by org.hibernate.ejb.criteria.predicate.ExplicitTruthValueCheck
All Implemented Interfaces:
Serializable, Expression<Boolean>, Predicate, Selection<Boolean>, TupleElement<Boolean>, ExpressionImplementor<Boolean>, ParameterContainer, Renderable, SelectionImplementor<Boolean>, TupleElementImplementor<Boolean>

public class ExplicitTruthValueCheck
extends AbstractSimplePredicate
implements Serializable

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.

See Also:
Serialized Form

Nested Class Summary
 
Nested classes/interfaces inherited from interface javax.persistence.criteria.Predicate
Predicate.BooleanOperator
 
Nested classes/interfaces inherited from interface org.hibernate.ejb.criteria.ParameterContainer
ParameterContainer.Helper
 
Constructor Summary
ExplicitTruthValueCheck(CriteriaBuilderImpl criteriaBuilder, Expression<Boolean> booleanExpression, TruthValue truthValue)
           
 
Method Summary
 Expression<Boolean> getBooleanExpression()
           
 TruthValue getTruthValue()
           
 void registerParameters(ParameterRegistry registry)
          Register any parameters contained within this query component with the given registry.
 String render(CriteriaQueryCompiler.RenderingContext renderingContext)
           
 String renderProjection(CriteriaQueryCompiler.RenderingContext renderingContext)
           
 
Methods inherited from class org.hibernate.ejb.criteria.predicate.AbstractSimplePredicate
getExpressions, getOperator
 
Methods inherited from class org.hibernate.ejb.criteria.predicate.AbstractPredicateImpl
getCompoundSelectionItems, isCompoundSelection, isNegated, not
 
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 org.hibernate.ejb.criteria.expression.SelectionImpl
alias, getValueHandlers
 
Methods inherited from class org.hibernate.ejb.criteria.expression.AbstractTupleElement
forceConversion, getAlias, getJavaType, getValueHandler, resetJavaType, setAlias
 
Methods inherited from class org.hibernate.ejb.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 javax.persistence.criteria.Expression
as, in, in, in, in, isNotNull, isNull
 
Methods inherited from interface javax.persistence.criteria.Selection
alias
 
Methods inherited from interface javax.persistence.TupleElement
getAlias, getJavaType
 
Methods inherited from interface org.hibernate.ejb.criteria.SelectionImplementor
getValueHandlers
 
Methods inherited from interface org.hibernate.ejb.criteria.TupleElementImplementor
getValueHandler
 

Constructor Detail

ExplicitTruthValueCheck

public ExplicitTruthValueCheck(CriteriaBuilderImpl criteriaBuilder,
                               Expression<Boolean> booleanExpression,
                               TruthValue truthValue)
Method Detail

getBooleanExpression

public Expression<Boolean> getBooleanExpression()

getTruthValue

public TruthValue getTruthValue()

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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