Coverage Report - org.mule.util.counters.impl.Delta
 
Classes in this File Line Coverage Branch Coverage Complexity
Delta
90%
9/10
67%
4/6
1.667
 
 1  
 /*
 2  
  * $Id: Delta.java 8077 2007-08-27 20:15:25Z aperepel $
 3  
  * --------------------------------------------------------------------------------------
 4  
  * Copyright (c) MuleSource, Inc.  All rights reserved.  http://www.mulesource.com
 5  
  *
 6  
  * The software in this package is published under the terms of the CPAL v1.0
 7  
  * license, a copy of which has been included with this distribution in the
 8  
  * LICENSE.txt file.
 9  
  */
 10  
 
 11  
 package org.mule.util.counters.impl;
 12  
 
 13  
 import org.mule.util.counters.CounterFactory.Type;
 14  
 
 15  
 public class Delta extends AggregateCounter
 16  
 {
 17  
 
 18  2
     private double first = 0.0;
 19  2
     private double second = 0.0;
 20  
 
 21  
     public Delta(String name, AbstractCounter base)
 22  
     {
 23  2
         super(name, Type.DELTA, base);
 24  2
     }
 25  
 
 26  
     public double nextValue()
 27  
     {
 28  10
         if (Double.isNaN(first) || Double.isNaN(second))
 29  
         {
 30  0
             return Double.NaN;
 31  
         }
 32  
         else
 33  
         {
 34  10
             return second - first > 0.0 ? second - first : 0.0;
 35  
         }
 36  
     }
 37  
 
 38  
     public void doCompute()
 39  
     {
 40  8
         first = second;
 41  8
         second = this.getBase().nextValue();
 42  8
     }
 43  
 
 44  
 }