public final Enum TruthValue

Class Inheritance

java.lang.Object
java.lang.Enum
org.hibernate.query.criteria.internal.predicate.TruthValue

Models what ANSI-SQL terms a truth value. Specifically, 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). All 3 are provided here for completeness.

Author: Steve Ebersole

Field Summary

Modifier and Type	Field and Description
public static final TruthValue	FALSE
public static final TruthValue	TRUE
public static final TruthValue	UNKNOWN

Constructor Summary

Access	Constructor and Description
private	TruthValue()

Method Summary

Modifier and Type	Method and Description
public static TruthValue	valueOf(String name)
public static TruthValue[]	values()

Inherited from java.lang.Enum:: clone compareTo describeConstable equals finalize getDeclaringClass hashCode name ordinal toString valueOf

Field Detail

FALSE	back to summary
public static final TruthValue FALSE

TRUE	back to summary
public static final TruthValue TRUE

UNKNOWN	back to summary
public static final TruthValue UNKNOWN

Constructor Detail

TruthValue	back to summary
private TruthValue()

Method Detail

valueOf	back to summary
public static TruthValue valueOf(String name)

values	back to summary
public static TruthValue[] values()