static URL[] findClasspathURLS(String classpathStr) throws MalformedURLException {
/* If harvester.home is set, then the classpath urls should be taken
as relative to that path.
*/
String homePath = System.getProperty(Strings.HARVESTER_DOT_HOME);
System.out.println("harvester.home=" + homePath);
log.log(Level.FINE, MessageNames.HOMEPATH_IS, homePath);
File homePathFile = (homePath == null) ? new File(Strings.DOT) : new File(homePath);
StringTokenizer tok = new StringTokenizer(classpathStr, Strings.WHITESPACE_SEPARATORS);
List<URL> pathElements = new ArrayList<URL>();
while (tok.hasMoreTokens()) {
File f = new File(homePathFile, tok.nextToken());
pathElements.add(f.toURI().toURL());
}
URL[] urls = (URL[]) pathElements.toArray(new URL[0]);
return urls;
}
private static ClassLoader resolveClassLoader(
Map<String, ClassLoader> classLoaders,
List<String> seen,
Map<String, Classpath> classpaths,
String id)
throws MalformedURLException {
if (classLoaders.containsKey(id)) {
return classLoaders.get(id);
}
if (seen.contains(id)) {
throw new ConfigurationException(MessageNames.CIRCULAR_CLASSPATH, id);
}
// Add the id to the list of classloaders we have attempted to build.
seen.add(id);
Classpath classpath = classpaths.get(id);
if (classpath == null) {
throw new ConfigurationException(MessageNames.CLASSPATH_UNDEFINED, id);
}
String parentClasspathId = classpath.getParent();
ClassLoader parentClassLoader = null;
if (parentClasspathId != null && !Strings.EMPTY.equals(parentClasspathId)) {
parentClassLoader = resolveClassLoader(classLoaders, seen, classpaths, parentClasspathId);
} else {
/* Should be the 'extension' classloader. */
parentClassLoader = Bootstrap.class.getClassLoader().getParent();
}
URL[] classpathUrls;
classpathUrls = findClasspathURLS(classpath.getValue());
SettableCodebaseClassLoader classLoader =
new SettableCodebaseClassLoader(classpathUrls, parentClassLoader);
classLoaders.put(id, classLoader);
log.log(
Level.FINE,
MessageNames.CONFIGURED_CLASSPATH,
new Object[] {id, Utils.format(classpathUrls)});
seen.remove(id);
return classLoader;
}