rp.expn
Class Expn

java.lang.Object
  |
  +--java.util.Observable
        |
        +--rp.expn.Expn

Direct Known Subclasses:

EstimateExpn, OperatorExpn, ScalarExpn

public abstract class Expn

extends java.util.Observable

A generic node in an expression tree.

Version:

$Revision: 1.1 $, $Date: 2001/05/23 18:44:57 $

Constructor Summary

Expn()

Method Summary

abstract double

getScalarMean() Return a (possibly computed) scalar mean for this node in the expression tree.

Methods inherited from class java.util.Observable

addObserver, clearChanged, countObservers, deleteObserver, deleteObservers, hasChanged, notifyObservers, notifyObservers, setChanged

Methods inherited from class java.lang.Object

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

Constructor Detail

Expn

public Expn()

Method Detail

getScalarMean

public abstract double getScalarMean()

Return a (possibly computed) scalar mean for this node in the expression tree. Returns the most straight-forward, easily-computed mean value.