com.singularsys.jep.misc.nullwrapper
Class NullWrapperNary

java.lang.Object
  com.singularsys.jep.functions.PostfixMathCommand
      com.singularsys.jep.functions.NaryFunction
          com.singularsys.jep.misc.nullwrapper.NullWrapperNary

All Implemented Interfaces:

PostfixMathCommandI, java.io.Serializable

public class NullWrapperNary
extends NaryFunction

Wrap an NaryFunction with a new function so that if any argument is null null is returned.

Since:

3.4

Author:

Richard Morris

See Also:

Serialized Form

Field Summary

Fields inherited from class com.singularsys.jep.functions.PostfixMathCommand

curNumberOfParameters, name, NaN, numberOfParameters

Constructor Summary

NullWrapperNary(NaryFunction fun)

Method Summary

java.lang.Object

eval(java.lang.Object[] args) Evaluate the function

Methods inherited from class com.singularsys.jep.functions.NaryFunction

run

Methods inherited from class com.singularsys.jep.functions.PostfixMathCommand

asArray, asBool, asDouble, asInt, asLong, asStrictInt, asString, checkNumberOfParameters, checkStack, getName, getNumberOfParameters, setCurNumberOfParameters, setName, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

NullWrapperNary

public NullWrapperNary(NaryFunction fun)

Parameters:

fun -

Method Detail

eval

public java.lang.Object eval(java.lang.Object[] args)
                      throws EvaluationException

Description copied from class: NaryFunction

Evaluate the function

Specified by:

eval in class NaryFunction

Parameters:

args - arguments to the function

Returns:

value returned by the function

Throws:

EvaluationException