1 |
| |
2 |
| |
3 |
| |
4 |
| |
5 |
| |
6 |
| |
7 |
| |
8 |
| |
9 |
| |
10 |
| |
11 |
| |
12 |
| |
13 |
| |
14 |
| |
15 |
| |
16 |
| |
17 |
| |
18 |
| |
19 |
| |
20 |
| package org.apache.xindice.util; |
21 |
| |
22 |
| import java.io.File; |
23 |
| import java.io.FileInputStream; |
24 |
| import java.util.Collections; |
25 |
| import java.util.HashMap; |
26 |
| import java.util.Map; |
27 |
| |
28 |
| |
29 |
| |
30 |
| |
31 |
| |
32 |
| |
33 |
| |
34 |
| |
35 |
| public final class DirectoryClassLoader extends ClassLoader { |
36 |
| |
37 |
| private File directory = null; |
38 |
| private Map cache = Collections.synchronizedMap(new HashMap()); |
39 |
| private Map dates = Collections.synchronizedMap(new HashMap()); |
40 |
| |
41 |
| |
42 |
0
| public DirectoryClassLoader(String directory) {
|
43 |
0
| this.directory = new File(directory);
|
44 |
| } |
45 |
| |
46 |
0
| private File getClassFile(String classname) {
|
47 |
0
| String filename = classname.replace('.', File.separatorChar) + ".class";
|
48 |
0
| return new File(directory, filename);
|
49 |
| } |
50 |
| |
51 |
0
| public boolean isModified(String classname) {
|
52 |
0
| Long value = (Long) dates.get(classname);
|
53 |
0
| if (value != null) {
|
54 |
0
| try {
|
55 |
0
| File file = getClassFile(classname);
|
56 |
0
| return file.lastModified() != value.longValue();
|
57 |
| } catch (Exception e) { |
58 |
0
| return true;
|
59 |
| } |
60 |
| } |
61 |
0
| return false;
|
62 |
| } |
63 |
| |
64 |
0
| public Class loadClass(String classname, boolean resolve) throws ClassNotFoundException {
|
65 |
0
| try {
|
66 |
0
| Class c = (Class) cache.get(classname);
|
67 |
0
| if (c == null) {
|
68 |
0
| try {
|
69 |
0
| File file = getClassFile(classname);
|
70 |
0
| FileInputStream fis = new FileInputStream(file);
|
71 |
0
| byte[] data = new byte[fis.available()];
|
72 |
0
| fis.read(data);
|
73 |
0
| fis.close();
|
74 |
0
| c = defineClass(classname, data, 0, data.length);
|
75 |
0
| dates.put(classname, new Long(file.lastModified()));
|
76 |
| } catch (Throwable t) { |
77 |
0
| c = findSystemClass(classname);
|
78 |
| } |
79 |
0
| cache.put(classname, c);
|
80 |
| } |
81 |
0
| if (resolve) {
|
82 |
0
| resolveClass(c);
|
83 |
| } |
84 |
0
| return c;
|
85 |
| } catch (Exception e) { |
86 |
0
| throw new ClassNotFoundException(e.toString());
|
87 |
| } |
88 |
| } |
89 |
| } |