Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
Delta |
|
| 1.6666666666666667;1.667 |
1 | /* | |
2 | * $Id: Delta.java 7976 2007-08-21 14:26:13Z dirk.olmes $ | |
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 | 0 | private double first = 0.0; |
19 | 0 | private double second = 0.0; |
20 | ||
21 | public Delta(String name, AbstractCounter base) | |
22 | { | |
23 | 0 | super(name, Type.DELTA, base); |
24 | 0 | } |
25 | ||
26 | public double nextValue() | |
27 | { | |
28 | 0 | if (Double.isNaN(first) || Double.isNaN(second)) |
29 | { | |
30 | 0 | return Double.NaN; |
31 | } | |
32 | else | |
33 | { | |
34 | 0 | return second - first > 0.0 ? second - first : 0.0; |
35 | } | |
36 | } | |
37 | ||
38 | public void doCompute() | |
39 | { | |
40 | 0 | first = second; |
41 | 0 | second = this.getBase().nextValue(); |
42 | 0 | } |
43 | ||
44 | } |