org.apache.cocoon.forms.expression
Class NullFunction

java.lang.Object
  org.outerj.expression.AbstractExpression
      org.apache.cocoon.forms.expression.NullFunction

All Implemented Interfaces:

org.outerj.expression.Expression

public class NullFunction
extends org.outerj.expression.AbstractExpression

Returns null constant.

Version:

$Id: NullFunction.html 1304258 2012-03-23 10:09:27Z ilgrosso $

Field Summary

Fields inherited from class org.outerj.expression.AbstractExpression

arguments, column, line

Constructor Summary

NullFunction()

Method Summary

Object	evaluate(org.outerj.expression.ExpressionContext context)
String	getDescription()
Class	getResultType()

Methods inherited from class org.outerj.expression.AbstractExpression

addArgument, addArgument, check, checkArgument, checkArguments, checkArgumentsOfSameType, checkNoArguments, getColumn, getLine, setPosition

Methods inherited from class java.lang.Object

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

Constructor Detail

NullFunction

public NullFunction()

Method Detail

evaluate

public Object evaluate(org.outerj.expression.ExpressionContext context)
                throws org.outerj.expression.ExpressionException

Throws:

org.outerj.expression.ExpressionException

getResultType

public Class getResultType()

getDescription

public String getDescription()