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1
2 package SOFA.SOFAnode.Run;
3
4 import java.io.ByteArrayOutputStream  ;
5 import java.io.IOException ;
6 import java.io.InputStream ;
7 import java.net.MalformedURLException ;
8 import java.net.URL ;
9 import java.net.URLConnection ;
10
11
15 public class SOFACompClassLoader extends ClassLoader {
16
17
18 URL url;
19
20
23 public SOFACompClassLoader(URL url) {
24 super();
25 this.url = url;
26 }
27
28 public Class findClass(String name) throws ClassNotFoundException {
29 byte[] b;
30 b = loadClassData(name);
31 Class ret = defineClass(name, b, 0, b.length);
32 return ret;
33 }
34
35 private byte[] loadClassData(String name) throws ClassNotFoundException {
36 java.util.StringTokenizer tok = new java.util.StringTokenizer (name, ".");
37 StringBuffer path = null;
38 if (name.startsWith("SOFA.GeneratedConnectors") || name.startsWith("org.objectweb.dsrg.deployment.connector.generated")) {
39 path = new StringBuffer (url.toString()+"/conn/");
40 } else {
41 path = new StringBuffer (url.toString()+"/classes/");
42 }
43 String nm = "";
44 while (tok.hasMoreTokens()) {
45 nm = tok.nextToken();
46 path.append("/");
47 path.append(nm);
48 }
49 path.append(".class");
50
51 URL defURL;
52 try {
53 defURL = new URL (path.toString());
54 } catch (MalformedURLException e) {
55 throw new ClassNotFoundException ("MalformedURLException: "+e.getMessage());
56 }
57 try {
58 URLConnection con = defURL.openConnection();
59 InputStream is = con.getInputStream();
60 ByteArrayOutputStream bo = new ByteArrayOutputStream ();
61 int a = is.read();
62 while (a != -1) {
63 bo.write(a);
64 a = is.read();
65 }
66 is.close();
67 byte[] ar = bo.toByteArray();
68 bo.close();
69 return ar;
70 } catch (IOException e) {
71 throw new ClassNotFoundException ("IOException: "+e.getMessage());
72 }
73 }
74
75
76
77 private static SOFACompClassLoader classLoader;
78
79 static {
80 try {
81 String baseURL = System.getProperty("sofa.tr.url","file:/sofa/tr/");
82 classLoader = new SOFACompClassLoader(new URL (baseURL));
83 } catch (java.net.MalformedURLException e) {
84 throw new SOFARuntimeException(e.getMessage(), e);
85 }
86 }
87
88
91 public static SOFACompClassLoader getCompClassLoader() {
92 return classLoader;
93 }
94
95
104 public static Class loadComponentClass(String className, String compImplVersion) throws ClassNotFoundException {
105 StringBuffer ret = new StringBuffer ("_V_");
106 for (int i=0; i<compImplVersion.length(); i++) {
107 switch (compImplVersion.charAt(i)) {
108 case '.':
109 ret.append('_');
110 break;
111 case '!':
112 ret.append("_E_");
113 break;
114 default:
115 ret.append(compImplVersion.charAt(i));
116 }
117 }
118 return classLoader.loadClass(className+ret.toString());
119 }
120 }
121 |
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