org.lsmp.djep.groupJep.function
Class GComparative

java.lang.Object
  org.nfunk.jep.function.PostfixMathCommand
      org.lsmp.djep.groupJep.function.GComparative

All Implemented Interfaces:

PostfixMathCommandI

public class GComparative
extends PostfixMathCommand

Implements logical operations on a group. Will always return Boolean results.

Author:

Rich Morris Created on 06-Mar-2004

Field Summary

Fields inherited from class org.nfunk.jep.function.PostfixMathCommand

curNumberOfParameters, numberOfParameters

Constructor Summary

GComparative(GroupI group, int id)
Constructor.

Method Summary

void	run(java.util.Stack inStack) Throws an exception because this method should never be called under normal circumstances.

Methods inherited from class org.nfunk.jep.function.PostfixMathCommand

checkNumberOfParameters, checkStack, getNumberOfParameters, setCurNumberOfParameters

Methods inherited from class java.lang.Object

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

Constructor Detail

GComparative

public GComparative(GroupI group,
                    int id)

Constructor. For inequalities the group should implement OrderedSetI.

Parameters:

id - should be Comparative.LT or GT, LE, GE, NE EQ

See Also:

Comparative

Method Detail

run

public void run(java.util.Stack inStack)
         throws ParseException

Description copied from class: PostfixMathCommand

Throws an exception because this method should never be called under normal circumstances. Each function should use it's own run() method for evaluating the function. This includes popping off the parameters from the stack, and pushing the result back on the stack.

Specified by:

run in interface PostfixMathCommandI

Overrides:

run in class PostfixMathCommand

Throws:

ParseException