StateModel


1   package org.oddjob.monitor.model;
2   
3   import java.io.PrintWriter  ;
4   import java.io.StringWriter  ;
5   import java.util.Observable  ;
6   
7   import org.oddjob.state.JobStateEvent;
8   
9   /**
10   * This class encapsualtes the model of a job state.
11   * 
12   * @author Rob Gordon 
13   */
14  
15  
16  public class StateModel extends Observable   {
17  
18      private String   state;
19      private String   time;
20      private String   exception;
21                      
22  
23      public void change(JobStateEvent event) {
24          state = event.getJobState().toString();
25          time = event.getTime().toString();
26          StringWriter   stackBuffer = new StringWriter  ();
27          
28          Throwable   t = event.getException();
29          if (t != null) {
30              PrintWriter   writer = new PrintWriter  (stackBuffer);
31              t.printStackTrace(writer);
32              exception = stackBuffer.toString();
33          }
34          else {
35              exception = "";
36          }
37          setChanged();
38          notifyObservers();
39      }
40          
41      /**
42       * @return Returns the exception.
43       */
44      public String   getException() {
45          return exception;
46      }
47      /**
48       * @return Returns the state.
49       */
50      public String   getState() {
51          return state;
52      }
53      /**
54       * @return Returns the time.
55       */
56      public String   getTime() {
57          return time;
58      }
59      
60      public void clear() {
61          state = "";
62          time = "";
63          exception = "";
64          setChanged();
65          notifyObservers();
66      }
67  
68  }
69
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