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1 package org.objectweb.celtix.application;
2
3 import java.util.ArrayList  ;
4 import java.util.Collection ;
5
6 import org.objectweb.celtix.plugins.PluginManager;
7
8 public class PluginInfo {
9
10 private final String className;
11 private final PluginManager loadingManager;
12 private final PluginStateMachine state;
13 private final Collection <PluginManager> referringManagers;
14 private Object plugin;
15 private PluginInfo requiredFor;
16
17 PluginInfo(String cn, PluginManager o) {
18 className = cn;
19 loadingManager = o;
20 state = new PluginStateMachine();
21 referringManagers = new ArrayList <PluginManager>();
22 }
23
24 String getClassName() {
25 return className;
26 }
27
28 ClassLoader getClassLoader() {
29 return loadingManager.getPluginClassLoader();
30 }
31
32 PluginStateMachine getState() {
33 return state;
34 }
35
36 Object getPlugin() {
37 return plugin;
38 }
39
40 void setPlugin(Object p) {
41 plugin = p;
42 }
43
44 void setRequiredFor(PluginInfo r) {
45 requiredFor = r;
46 }
47
48 boolean isCircularDependency() {
49 PluginInfo r = requiredFor;
50 while (null != r) {
51 if (getClassName().equals(requiredFor.getClassName())
52 && getClassLoader() == requiredFor.getClassLoader()) {
53 return true;
54 }
55 r = r.requiredFor;
56 }
57
58 return false;
59 }
60
61 boolean isRegistered() {
62 return referringManagers.size() > 0;
63 }
64
65 boolean isRegisteredWith(PluginManager manager) {
66 for (PluginManager pm : referringManagers) {
67 if (manager == pm) {
68 return true;
69 }
70 }
71 return false;
72 }
73
74 void register(PluginManager manager) {
75 referringManagers.add(manager);
76 }
77
78 void unregister(PluginManager manager) {
79 referringManagers.remove(manager);
80 }
81 }
82 |
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