Source code: org/mandarax/eca/example/StockQuote.java
1
2 /*
3 * Copyright (C) 1998-2002 <a href="mailto:mandarax@jbdietrich.com">Jens Dietrich</a>
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
19
20 package org.mandarax.eca.example;
21
22 import java.util.Random;
23
24 /**
25 * Class providing stock quotes for our investments.
26 * Currently a dummy, but could be replaced by an implementation that issues HTTP requests
27 * (peraps SOAP queries) to an online service.
28 * @author <A HREF="mailto:j.b.dietrich@massey.ac.nz">Jens Dietrich</A>
29 */
30 public class StockQuote {
31 static Random random = new Random();
32
33 /**
34 * Get the recent (absolute) change.
35 * @param inv an investment
36 * @return a double
37 */
38 public static double getQuote(Investment inv) {
39 double val = random.nextGaussian()*3;
40 // scale
41 val = val * inv.getValue()/100;
42 ExampleLog.LOG_EXAMPLE.debug("quote for " + inv.getSymbol() + " " + val);
43 return val;
44 }
45 public static void main(String[] args) {
46 for (int i=0;i<20;i++) System.out.println(getQuote(null));
47 }
48 }