org.araneaframework.backend.list.memorybased.expression.logical
Class NotExpression

java.lang.Object
  org.araneaframework.backend.list.memorybased.expression.logical.NotExpression

All Implemented Interfaces:

CompositeExpression, Expression, Serializable

public class NotExpression

extends Object

implements CompositeExpression

See Also:

Serialized Form

Constructor Summary

NotExpression(Expression expr)

Method Summary

Object	evaluate(VariableResolver resolver) Evaluates this Expression by returning its value.
Expression[]	getChildren()

Methods inherited from class java.lang.Object

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

Constructor Detail

NotExpression

public NotExpression(Expression expr)

Method Detail

getChildren

public Expression[] getChildren()

Specified by:

getChildren in interface CompositeExpression

evaluate

public Object evaluate(VariableResolver resolver)
                throws ExpressionEvaluationException

Description copied from interface: Expression

Evaluates this Expression by returning its value. The returned value may also be null.

Specified by:

evaluate in interface Expression

Parameters:

resolver - Resolver that is used to evalute Variables.

Returns:

the value of this Expression.

Throws:

ExpressionEvaluationException - when the evaluating fails.