org.ceryle.wiki.plugin.query.operators
Class NullOperator

java.lang.Object
  org.ceryle.wiki.plugin.query.operators.Operator
      org.ceryle.wiki.plugin.query.operators.NullOperator

public class NullOperator
extends Operator

The NULL Operator, a component of a query expression.

Author:

Murray Altheim, John Volkar (john.volkar at gmail.com)

Field Summary

Fields inherited from class org.ceryle.wiki.plugin.query.operators.Operator

_ALL, _AND, _ANY, _BY, _FROM, _IS, _NOT, _NULL, _OR, _TO

Constructor Summary

NullOperator()

Method Summary

boolean

evaluateOperator(Operand left, Operand right, Modifier modifier, ReferenceInfoProvider refInfoProvider, String pageName)

Methods inherited from class org.ceryle.wiki.plugin.query.operators.Operator

getName, isInfix, isPrefix, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

NullOperator

public NullOperator()

Method Detail

evaluateOperator

public boolean evaluateOperator(Operand left,
                                Operand right,
                                Modifier modifier,
                                ReferenceInfoProvider refInfoProvider,
                                String pageName)
                         throws QueryException

Specified by:

evaluateOperator in class Operator

Throws:

QueryException