|
1
6
7 package com.quikj.application.web.oamp.plugin;
8
9 import com.quikj.server.web.*;
10
11 import java.util.*;
12
13
14 public class FeatureOAMPHandlerList
15 {
16 private FeatureOAMPHandlerList()
17 {
18 instance = this;
19 }
20
21 public static FeatureOAMPHandlerList Instance()
22 {
23 if (instance == null)
24 {
25 new FeatureOAMPHandlerList();
26 }
27
28 return instance;
29 }
30
31 public synchronized void dispose()
32 {
33 Iterator i = featureList.values().iterator();
34 while (i.hasNext() == true)
35 {
36 ((FeatureHandlerInterface) i.next()).dispose();
37 }
38
39 featureList.clear();
40 }
41
42 public synchronized boolean add(String  feature_name, String class_name, PluginParameters parms, ClientParms client_parms)
43 {
44 try
45 {
46 if (featureList.get(new String (feature_name)) != null)
48 {
49 errorMessage = new String ("Could not add the application "
50 + class_name
51 + " to the list because the application with name "
52 + feature_name
53 + " is duplicate");
54 return false;
55 }
56
57 Class app_class = Class.forName(class_name);
58
59 Class [] interfaces = app_class.getInterfaces();
61
62 boolean found = false;
63 for (int i = 0; i < interfaces.length; i++)
64 {
65 if (interfaces[i].getName().equals("com.quikj.application.web.oamp.plugin.FeatureHandlerInterface") == true)
66 {
67 found = true;
68 break;
69 }
70 }
71
72 if (found == false)
73 {
74 errorMessage = new String ("Class "
75 + class_name
76 + " does not implement the com.quikj.application.web.oamp.plugin.FeatureHandlerInterface");
77 return false;
78 }
79
80 com.quikj.application.web.oamp.plugin.FeatureHandlerInterface obj = null;
82 try
83 {
84 obj = (FeatureHandlerInterface)app_class.newInstance();
85 }
86 catch (InstantiationException ex1)
87 {
88 errorMessage = new String ("InstantiationException : " + ex1.getMessage());
89 return false;
90 }
91 catch (IllegalAccessException ex2)
92 {
93 errorMessage = new String ("IllegalAccessException : " + ex2.getMessage());
94 return false;
95 }
96
97 if (obj.init(feature_name, parms, client_parms) == false)
99 {
100 return false;
102 }
103
104 obj.start();
106
107 featureList.put(new String (feature_name), obj);
109 }
110 catch (ClassNotFoundException ex)
111 {
112 errorMessage = new String ("Class "
113 + class_name
114 + " not found");
115 return false;
116 }
117
118 return true;
119 }
120
121 public void addItemToList (FeatureHandlerInterface item)
122 {
123 featureList.put(new String (item.getFeatureName()), item);
124 }
125
126 public synchronized boolean delete(String feature_name)
127 {
128 FeatureHandlerInterface obj = (FeatureHandlerInterface)featureList.get(new String (feature_name));
129
130 if (obj == null)
131 {
132 errorMessage = new String ("Application with name "
133 + feature_name
134 + " not found in list");
135 return false;
136 }
137
138 if (featureList.remove(new String (feature_name)) == null)
139 {
140 errorMessage = new String ("The application with name "
141 + feature_name
142 + " could not be removed from the list");
143 }
144
145 obj.dispose();
147
148 return true;
149 }
150
151 public synchronized FeatureHandlerInterface getHandler (String feature_name)
152 {
153 return ((FeatureHandlerInterface) featureList.get(new String (feature_name)));
154 }
155
156 public synchronized FeatureHandlerInterface[] getElements()
157 {
158 FeatureHandlerInterface[] temp = new FeatureHandlerInterface[featureList.size()];
159 return ((FeatureHandlerInterface[]) (featureList.values().toArray(temp)));
160 }
161
162 public String getErrorMessage()
163 {
164 return errorMessage;
165 }
166
167 private String errorMessage = "";
168 private Hashtable featureList = new Hashtable();
169 private static FeatureOAMPHandlerList instance = null;
170 } |
Popular Tags |
Java API By Example, From Geeks To Geeks.