Current File : //home/waritko/yacy/source/net/yacy/cora/plugin/ClassProvider.java
/**
* ClassProvider
* Copyright 201 by Michael Peter Christen, mc@yacy.net, Frankfurt a. M., Germany
* First released 13.12.2011 at http://yacy.net
*
* $LastChangedDate$
* $LastChangedRevision$
* $LastChangedBy$
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program in the file lgpl21.txt
* If not, see <http://www.gnu.org/licenses/>.
*/
package net.yacy.cora.plugin;
import java.io.File;
import java.lang.reflect.Method;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
public class ClassProvider {
public static Class<?> load(final String classname, final File jarfile) {
Class<?> c;
try {
c = Class.forName(classname);
} catch (final ClassNotFoundException e) {
c = null;
}
if (c == null) {
// load jar
String path = jarfile.getAbsolutePath();
if (File.separatorChar != '/') path = path.replace(File.separatorChar, '/');
if (!path.startsWith("/")) path = "/" + path;
URL[] urls;
try {
urls = new URL[]{new URL("file", "", path)};
final ClassLoader cl = new URLClassLoader(urls);
c = cl.loadClass(classname);
} catch (final MalformedURLException e) {
} catch (final ClassNotFoundException e) {
}
}
return c;
}
public static Method getStaticMethod(final Class<?> c, final String methodName, final Class<?>[] args) {
if (c == null) return null;
try {
return c.getMethod(methodName, args);
} catch (final SecurityException e) {
return null;
} catch (final NoSuchMethodException e) {
return null;
}
}
}
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