Main


1   package dynaop.example;
2   
3   import java.util.Date  ;
4   
5   import dynaop.ProxyFactory;
6   import dynaop.observer.Observer;
7   import dynaop.observer.Subject;
8   
9   /**
10   * Example application. Creates and exersizes proxied book and person objects.
11   * Renders sequence diagram.
12   * 
13   * @author Bob Lee (crazybob@crazybob.org)
14   */
15  public class Main {
16      
17      public static void main(String  [] args) throws Exception   {
18          // initialize sequence diagram window.
19          Sequence.setFrame(new com.zanthan.sequence.SequenceFrame());
20          
21          // get domain object factory.
22          Factory factory = Factory.getInstance();
23  
24          // create a date and change the time.
25          Date   date = factory.createDate();
26          System.out.println("=> Time: " + date.getTime());
27          date.setTime(1000);
28          
29          // create a book and add an observer to it.
30          Book book = factory.createBook();
31          Observer observer = BookTitleObserver.getInstance();
32          ((Subject) book).addObserver(observer);
33          book.setTitle("Bitter EJB");
34          book.setPublicationDate(date);
35          
36          // create a person, set the ID, add a book, and set the e-mail.
37          // note: we cast the person to the helper interface, PersonProxy.
38          PersonProxy bob = (PersonProxy) factory.createPerson();
39          bob.setId(100);
40          bob.getId();
41          bob.getBooks().add(book);
42          bob.setEmail("crazybob@crazybob.org");
43          
44          // create another person and compare it to the first.
45          PersonProxy krista = (PersonProxy) factory.createPerson();
46          krista.setId(200);      
47          System.out.println("=> Equals: " + bob.equals(krista));
48  
49          // compare book to a person.
50          ((Identifiable) book).setId(10);
51          System.out.println("=> Equals: " + book.equals(krista));
52          
53          /*
54          for (int i = 0; i < 10; i++)
55              testPerformance();
56          System.out.println();
57          for (int i = 0; i < 10; i++)
58              testCglibPerformance();
59          */
60      }
61  
62      static void testPerformance() {
63          PersonProxy p = (PersonProxy) Factory.getInstance().createPerson();
64          p.setId(50);
65          p.getId();
66          p.getEmail();
67          p.hashCode();
68          
69          long start = System.currentTimeMillis();
70          for (int i = 0; i < 10000; i++) {
71              p.setId(50);
72              p.getId();
73              p.getEmail();
74              p.hashCode();
75          }
76          System.out.println("*** Time: " + 
77              (System.currentTimeMillis() - start) + "ms");
78      }
79  
80      static void testCglibPerformance() {
81          BookImpl b = (BookImpl) 
82              ProxyFactory.getInstance().extend(BookImpl.class);
83          ((Identifiable) b).setId(50);
84          ((Identifiable) b).getId();
85          b.hashCode();
86          
87          long start = System.currentTimeMillis();
88          for (int i = 0; i < 10000; i++) {
89              ((Identifiable) b).setId(50);
90              ((Identifiable) b).getId();
91              b.hashCode();
92          }
93          System.out.println("*** Time: " + 
94              (System.currentTimeMillis() - start) + "ms");
95      }
96  }
97
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