org.sql.generation.api.grammar.booleans
Class Predicate.EmptyPredicate

java.lang.Object
  org.sql.generation.api.grammar.booleans.Predicate.EmptyPredicate

All Implemented Interfaces:

org.atp.api.Typeable<ValueExpression>, BooleanExpression, Predicate, ValueExpression

Enclosing interface:

Predicate

public static final class Predicate.EmptyPredicate
extends java.lang.Object
implements Predicate

A class representing empty predicate. The result of empty predicate is empty string. If empty predicate is encountered inside Conjunction or Disjunction, their operator is omitted. So, empty predicate AND something becomes just something.

Author:

Stanislav Muhametsin

Nested Class Summary

Nested classes/interfaces inherited from interface org.sql.generation.api.grammar.booleans.Predicate

Predicate.EmptyPredicate

Nested classes/interfaces inherited from interface org.sql.generation.api.grammar.booleans.BooleanExpression

BooleanExpression.False, BooleanExpression.True

Field Summary

static Predicate.EmptyPredicate

INSTANCE Singleton instance of Predicate.EmptyPredicate.

Method Summary

java.lang.Class<? extends BooleanExpression>

getImplementedType() Returns Predicate.EmptyPredicate.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

INSTANCE

public static final Predicate.EmptyPredicate INSTANCE

Singleton instance of Predicate.EmptyPredicate.

Method Detail

getImplementedType

public java.lang.Class<? extends BooleanExpression> getImplementedType()

Returns Predicate.EmptyPredicate.

Specified by:

getImplementedType in interface org.atp.api.Typeable<ValueExpression>