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1
22 package org.jboss.aop.proxy.container;
23
24 import java.lang.ref.WeakReference  ;
25 import java.util.Arrays ;
26 import java.util.Comparator ;
27
28
33 public class ContainerCacheUtil
34 {
35
36
40 public static WeakReference [] getSortedWeakReferenceForInterfaces(Class [] ifaces)
41 {
42 if (ifaces == null)
43 {
44 return null;
45 }
46
47 WeakReference [] interfaces = new WeakReference [ifaces.length];
48
49 for (int i = 0 ; i < ifaces.length ; i++)
50 {
51 interfaces[i] = new WeakReference (ifaces[i]);
52 }
53
54 Arrays.sort(interfaces, Alphabetical.singleton);
55 return interfaces;
56 }
57
58 public static boolean compareClassRefs(WeakReference my, WeakReference other)
59 {
60 Class myClass = (Class )my.get();
61 Class otherClass = (Class )other.get();
62
63 if (myClass == null || otherClass == null)
64 {
65 return false;
66 }
67
68 if (!myClass.equals(otherClass))
69 {
70 return false;
71 }
72 return true;
73 }
74
75 public static boolean compareInterfaceRefs(WeakReference [] my, WeakReference [] other)
76 {
77 if ((my == null && other != null) ||
78 (my == null && other != null))
79 {
80 return false;
81 }
82
83 if (my != null && my != null)
84 {
85 if (my.length != other.length)
86 {
87 return false;
88 }
89
90 for (int i = 0 ; i < my.length ; i++)
91 {
92 Class myIf = (Class )my[i].get();
93 Class otherIf = (Class )other[i].get();
94
95 if (!myIf.equals(otherIf))
96 {
97 return false;
98 }
99 }
100 }
101
102 return true;
103 }
104
105 static class Alphabetical implements Comparator
106 {
107 static Alphabetical singleton = new Alphabetical();
108
109 public int compare(Object o1, Object o2)
110 {
111 String name1 = ((Class )((WeakReference )o1).get()).getName();
112 String name2 = ((Class )((WeakReference )o2).get()).getName();
113 return (name1).compareTo(name2);
114 }
115 }
116
117 }
118 |
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