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1 package mx4j.remote;
2
3 import java.security.AccessController  ;
4 import java.security.PrivilegedAction ;
5
6 import mx4j.log.Log;
7 import mx4j.log.Logger;
8
9
13 public abstract class ProviderHelper
14 {
15 protected static String normalizeProtocol(String protocol)
16 {
17 String normalized = protocol.replace('+', '.');
19 normalized = normalized.replace('-', '_');
20 Logger logger = getLogger();
21 if (logger.isEnabledFor(Logger.TRACE)) logger.trace("Normalizing protocol: " + protocol + " --> " + normalized);
22 return normalized;
23 }
24
25 protected static String findSystemPackageList(final String key)
26 {
27 Logger logger = getLogger();
28 String providerPackages = (String )AccessController.doPrivileged(new PrivilegedAction ()
29 {
30 public Object run()
31 {
32 return System.getProperty(key);
33 }
34 });
35 if (logger.isEnabledFor(Logger.DEBUG)) logger.debug("Packages in the system property '" + key + "': " + providerPackages);
36 return providerPackages;
37 }
38
39 protected static Class loadClass(String className, ClassLoader loader) throws ClassNotFoundException
40 {
41 Logger logger = getLogger();
42 if (logger.isEnabledFor(Logger.DEBUG)) logger.debug("Loading class: " + className + " with classloader " + loader);
43 return loader.loadClass(className);
44 }
45
46 protected static String constructClassName(String packageName, String protocol, String className)
47 {
48 return new StringBuffer (packageName).append(".").append(protocol).append(".").append(className).toString();
49 }
50
51 protected static Logger getLogger()
52 {
53 return Log.getLogger(ProviderHelper.class.getName());
54 }
55 }
56 |
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