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1
27
28 package org.objectweb.kilim.model.services;
29
30 import java.lang.reflect.Array  ;
31 import java.util.HashMap ;
32
33 import org.objectweb.kilim.KilimException;
34 import org.objectweb.kilim.description.Type;
35
36
39 public class DefaultRuntimeClassLoader implements RuntimeClassLoader {
40 private HashMap caches;
41
42
43 public static RuntimeClassLoader instance = new DefaultRuntimeClassLoader();
44
45
48 public DefaultRuntimeClassLoader() {
49 caches = new HashMap ();
50 }
51
52
55 public Class getClass(Type type) throws KilimException {
56 return getClass(type.getName());
57 }
58
59
62 public Class getClass(String class_name) throws KilimException {
63 Class result = null;
64 ClassLoader class_loader = Thread.currentThread().getContextClassLoader();
65 Object cl_cache = caches.get(class_loader);
66 HashMap class_loader_cache = null;
67 if (cl_cache == null) {
68 class_loader_cache = new HashMap ();
69 caches.put(class_loader, class_loader_cache);
70 } else {
71 class_loader_cache = (HashMap ) cl_cache;
72 result = (Class ) class_loader_cache.get(class_name);
73 }
74
75 if (result != null) {
76 return result;
77 }
78
79 int size = 0;
80 int index = 0;
81 while (true) {
82 index = class_name.indexOf('[', index);
83 if (index < 0) {
84 break;
85 } else {
86 size++;
87 index += 2;
89 }
90 }
91 if (size > 0) {
92 String element_class_name = class_name.substring(0, class_name.indexOf('['));
94 Class element_class = getClass(element_class_name);
95 int[] sizes = new int[size];
97 for (int i = 0; i < size; i++) {
98 sizes[i] = 0;
99 }
100 Object array = Array.newInstance(element_class, sizes);
101 result = array.getClass();
103 } else {
104 result = primitiveClass(class_name);
105
106 if (result == null) {
107 try {
108 result = class_loader.loadClass(class_name);
109 } catch (ClassNotFoundException ignored) { }
110 if (result == null) {
111 try {
112 result = Class.forName(class_name);
113 } catch (ClassNotFoundException e) {
114 throw new KilimException(e);
115 }
116 }
117 }
118 }
119 class_loader_cache.put(class_name, result);
120
121 return result;
122 }
123
124 static Class primitiveClass(String name) {
125 switch (name.charAt(0)) {
126 case 'b':
127 switch (name.charAt(1)) {
128 case 'o':
129 return "boolean".equals(name) ? boolean.class : null;
130 default:
131 return "byte".equals(name) ? byte.class : null;
132 }
133 case 'c':
134 return "char".equals(name) ? char.class : null;
135 case 'd':
136 return "double".equals(name) ? double.class : null;
137 case 'f':
138 return "float".equals(name) ? float.class : null;
139 case 'i':
140 return "int".equals(name) ? int.class : null;
141 case 'l':
142 return "long".equals(name) ? long.class : null;
143 case 's':
144 return "short".equals(name) ? short.class : null;
145 default:
146 return "void".equals(name) ? void.class : null;
147 }
148 }
149 }
150 |
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