Corporation


1   /*
2    * Copyright 2005 Joe Walker
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *     http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package org.getahead.dwrdemo.gidemo;
17  
18  import java.math.BigDecimal  ;
19  import java.text.SimpleDateFormat  ;
20  import java.util.Date  ;
21  import java.util.Random  ;
22  
23  /**
24   * An object representing the stock price of a corporation.
25   * @author Joe Walker [joe at getahead dot ltd dot uk]
26   */
27  public class Corporation
28  {
29      /**
30       * @param jsxid
31       * @param name
32       * @param last
33       * @param change
34       */
35      public Corporation(String   jsxid, String   name)
36      {
37          this.jsxid = jsxid;
38          this.name = name;
39  
40          float temp = random.nextFloat() * 100.0F;
41          last = new BigDecimal  (Math.round(temp * 100.0F) / 100.0F);
42          last = last.setScale(2, BigDecimal.ROUND_UP);
43          time = new Date  ();
44          change = new BigDecimal  (0.0F);
45          change = change.setScale(2, BigDecimal.ROUND_UP);
46          max = last;
47          min = last;
48      }
49  
50      private String   jsxid;
51  
52      private String   name;
53  
54      private BigDecimal   last;
55  
56      private Date   time;
57  
58      private BigDecimal   change;
59  
60      private BigDecimal   max;
61  
62      private BigDecimal   min;
63  
64      private Random   random = new Random  ();
65  
66      /**
67       * @return the jsxid
68       */
69      public String   getJsxid()
70      {
71          return jsxid;
72      }
73  
74      /**
75       * @return the name
76       */
77      public String   getName()
78      {
79          return name;
80      }
81  
82      /**
83       * @return the last
84       */
85      public BigDecimal   getLast()
86      {
87          return last;
88      }
89  
90      /**
91       * @return the time
92       */
93      public String   getTime()
94      {
95          return FORMAT.format(time);
96      }
97  
98      /**
99       * @return the change
100      */
101     public BigDecimal   getChange()
102     {
103         return change;
104     }
105 
106     /**
107      * @return the max
108      */
109     public BigDecimal   getMax()
110     {
111         return max;
112     }
113 
114     /**
115      * @return the min
116      */
117     public BigDecimal   getMin()
118     {
119         return min;
120     }
121 
122     /**
123      * Alter the stock price
124      */
125     public void change()
126     {
127         float newChange = (random.nextFloat() * 4) - 2;
128         newChange = Math.round(newChange * 100.0F) / 100.0F;
129 
130         if (last.floatValue() + newChange < 9)
131         {
132             newChange = -newChange;
133         }
134 
135         change = new BigDecimal  (newChange);
136         change = change.setScale(2, BigDecimal.ROUND_UP);
137 
138         last = last.add(change);
139 
140         if (last.compareTo(max) > 0)
141         {
142             max = last;
143         }
144 
145         if (last.compareTo(min) < 0)
146         {
147             min = last;
148         }
149 
150         time = new Date  ();
151     }
152 
153     private static final SimpleDateFormat   FORMAT = new SimpleDateFormat  ("hh:MM:ss");
154 }
155
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