TalkSessionFactory


1   /*
2    * TalkSessionFactory.java
3    *
4    * Created on November 19, 2002, 1:55 AM
5    */
6   
7   package com.quikj.application.web.talk.client;
8   
9   /**
10   *
11   * @author  amit
12   */
13  public class TalkSessionFactory
14  {
15      /** Creates a new instance of TalkSessionFactory */
16      private TalkSessionFactory()
17      {
18          instance = this;
19      }
20      
21      public static TalkSessionFactory getInstance()
22      {
23          if (instance == null)
24          {
25              new TalkSessionFactory();
26          }
27          
28          return instance;
29      }
30      
31      public TalkSessionInterface createSession(String   class_name)
32      {
33          if (class_name == null)
34          {
35              class_name = "com.quikj.application.web.talk.client.TalkSession";
36          }
37          
38          Class   app_class = null;
39          try
40          {
41              app_class = Class.forName(class_name);
42          }
43          catch (ClassNotFoundException   ex)
44          {
45              return null;
46          }
47          
48          // check if the class implements the PluginAppInterface
49          Class  [] interfaces = app_class.getInterfaces();
50          
51          int i = 0;
52          for (i = 0; i < interfaces.length; i++)
53          {
54              if (interfaces[i].getName().equals("com.quikj.application.web.talk.client.TalkSessionInterface")
55              == true)
56              {
57                  break;
58              }
59          }
60          
61          if (i == interfaces.length)
62          {
63              // the class does not implement the TalkSessionInterface interface
64              return null;
65          }
66          
67          try
68          {
69              return (TalkSessionInterface)app_class.newInstance();
70          }
71          catch (InstantiationException   ex1)
72          {
73              return null;
74          }
75          catch (IllegalAccessException   ex2)
76          {
77              return null;
78          }                
79      }
80      
81      public TalkSessionInterface createSession()
82      {
83          return createSession(null);
84      }
85      
86      private static TalkSessionFactory instance = null;
87  }
88
A to Z: JavaDoc & Examples Daily Java News & Articles Open Source Projects Open Source Codes Free Computer Books Remove Frame
Popular Tags