public static void main(final String[] args) throws Exception {
// use the platform default proxy if available.
// see sun.net.spi.DefaultProxySelector for details.
try {
System.setProperty("java.net.useSystemProxies","true");
} catch (SecurityException e) {
// failing to set this property isn't fatal
}
if( Util.getSystemProperty(Driver.class,"noThreadSwap")!=null )
_main(args); // for the ease of debugging
// run all the work in another thread so that the -Xss option
// will take effect when compiling a large schema. See
// http://developer.java.sun.com/developer/bugParade/bugs/4362291.html
final Throwable[] ex = new Throwable[1];
Thread th = new Thread() {
public void run() {
try {
_main(args);
} catch( Throwable e ) {
ex[0]=e;
}
}
};
th.start();
th.join();
if(ex[0]!=null) {
// re-throw
if( ex[0] instanceof Exception )
throw (Exception)ex[0];
else
throw (Error)ex[0];
}
}
/**
* Looks for all "META-INF/services/[className]" files and create one instance for each class name
* found inside this file.
*/
private static <T> T[] findServices(Class<T> clazz, ClassLoader classLoader) {
// if true, print debug output
final boolean debug =
com.sun.tools.xjc.util.Util.getSystemProperty(Options.class, "findServices") != null;
// if we are running on Mustang or Dolphin, use ServiceLoader
// so that we can take advantage of JSR-277 module system.
try {
Class<?> serviceLoader = Class.forName("java.util.ServiceLoader");
if (debug) System.out.println("Using java.util.ServiceLoader");
Iterable<T> itr =
(Iterable<T>)
serviceLoader
.getMethod("load", Class.class, ClassLoader.class)
.invoke(null, clazz, classLoader);
List<T> r = new ArrayList<T>();
for (T t : itr) r.add(t);
return r.toArray((T[]) Array.newInstance(clazz, r.size()));
} catch (ClassNotFoundException e) {
// fall through
} catch (IllegalAccessException e) {
Error x = new IllegalAccessError();
x.initCause(e);
throw x;
} catch (InvocationTargetException e) {
Throwable x = e.getTargetException();
if (x instanceof RuntimeException) throw (RuntimeException) x;
if (x instanceof Error) throw (Error) x;
throw new Error(x);
} catch (NoSuchMethodException e) {
Error x = new NoSuchMethodError();
x.initCause(e);
throw x;
}
String serviceId = "META-INF/services/" + clazz.getName();
// used to avoid creating the same instance twice
Set<String> classNames = new HashSet<String>();
if (debug) {
System.out.println("Looking for " + serviceId + " for add-ons");
}
// try to find services in CLASSPATH
try {
Enumeration<URL> e = classLoader.getResources(serviceId);
if (e == null) return (T[]) Array.newInstance(clazz, 0);
ArrayList<T> a = new ArrayList<T>();
while (e.hasMoreElements()) {
URL url = e.nextElement();
BufferedReader reader = null;
if (debug) {
System.out.println("Checking " + url + " for an add-on");
}
try {
reader = new BufferedReader(new InputStreamReader(url.openStream()));
String impl;
while ((impl = reader.readLine()) != null) {
// try to instanciate the object
impl = impl.trim();
if (classNames.add(impl)) {
Class implClass = classLoader.loadClass(impl);
if (!clazz.isAssignableFrom(implClass)) {
pluginLoadFailure = impl + " is not a subclass of " + clazz + ". Skipping";
if (debug) System.out.println(pluginLoadFailure);
continue;
}
if (debug) {
System.out.println("Attempting to instanciate " + impl);
}
a.add(clazz.cast(implClass.newInstance()));
}
}
reader.close();
} catch (Exception ex) {
// let it go.
StringWriter w = new StringWriter();
ex.printStackTrace(new PrintWriter(w));
pluginLoadFailure = w.toString();
if (debug) {
System.out.println(pluginLoadFailure);
}
if (reader != null) {
try {
reader.close();
} catch (IOException ex2) {
// ignore
}
}
}
}
return a.toArray((T[]) Array.newInstance(clazz, a.size()));
} catch (Throwable e) {
// ignore any error
StringWriter w = new StringWriter();
e.printStackTrace(new PrintWriter(w));
pluginLoadFailure = w.toString();
if (debug) {
System.out.println(pluginLoadFailure);
}
return (T[]) Array.newInstance(clazz, 0);
}
}
