vishnu.parser.expressions
Class SQLNotOperator

java.lang.Object
  vishnu.parser.expressions.SQLNotOperator

All Implemented Interfaces:

SQLOperand

public class SQLNotOperator
extends java.lang.Object
implements SQLOperand

Este operador modela la negacion de un valor booleano.

Author:

Hernan Rancati

Constructor Summary

SQLNotOperator(SQLOperand booleanOperand)

Method Summary

boolean	equals(SQLOperand o)
Value	evaluate(Record r) evalua el resultado de la expresion representada por este operador sobre el registro r.
int	hashCode()
SQLOperand	operand()
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

SQLNotOperator

public SQLNotOperator(SQLOperand booleanOperand)

Method Detail

operand

public SQLOperand operand()

evaluate

public Value evaluate(Record r)

Description copied from interface: SQLOperand

evalua el resultado de la expresion representada por este operador sobre el registro r.

Specified by:

evaluate in interface SQLOperand

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

equals

public boolean equals(SQLOperand o)

Specified by:

equals in interface SQLOperand

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object