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package de.lmu.ifi.dbs.elki.application;
/*
This file is part of ELKI:
Environment for Developing KDD-Applications Supported by Index-Structures
Copyright (C) 2013
Ludwig-Maximilians-Universität München
Lehr- und Forschungseinheit für Datenbanksysteme
ELKI Development Team
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import java.lang.reflect.Method;
import java.util.Arrays;
import de.lmu.ifi.dbs.elki.gui.minigui.MiniGUI;
import de.lmu.ifi.dbs.elki.logging.LoggingUtil;
import de.lmu.ifi.dbs.elki.utilities.Alias;
import de.lmu.ifi.dbs.elki.utilities.InspectionUtil;
/**
* Class to launch ELKI.
*
* @author Erich Schubert
*
* @apiviz.uses AbstractApplication
*/
public class ELKILauncher {
/**
* Application to run by default.
*/
public static final Class<? extends AbstractApplication> DEFAULT_APPLICATION = MiniGUI.class;
/**
* Launch ELKI.
*
* @param args Command line arguments.
*/
public static void main(String[] args) {
if (args.length > 0 && args[0].charAt(0) != '-') {
try {
Class<?> cls = findMainClass(args[0]);
Method m = cls.getMethod("main", String[].class);
Object a = Arrays.copyOfRange(args, 1, args.length);
try {
m.invoke(null, a);
} catch (Exception e) {
LoggingUtil.exception(e);
}
return;
} catch (Exception e) {
// Ignore
}
}
try {
Method m = DEFAULT_APPLICATION.getMethod("main", String[].class);
m.invoke(null, (Object) args);
} catch (Exception e) {
LoggingUtil.exception(e);
}
}
/**
* Find a class for the given name.
*
* @param name Class name
* @return Class
* @throws ClassNotFoundException
*/
private static Class<?> findMainClass(String name) throws ClassNotFoundException {
try {
return Class.forName(name);
} catch (ClassNotFoundException e) {
// pass
}
try {
return Class.forName(AbstractApplication.class.getPackage().getName() + '.' + name);
} catch (ClassNotFoundException e) {
// pass
}
for (Class<?> c : InspectionUtil.cachedFindAllImplementations(AbstractApplication.class)) {
if (c.isAnnotationPresent(Alias.class)) {
Alias aliases = c.getAnnotation(Alias.class);
for (String alias : aliases.value()) {
if (alias.equalsIgnoreCase(name)) {
return c;
}
}
}
}
throw new ClassNotFoundException(name);
}
}
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