70 lines
2.3 KiB
Java
70 lines
2.3 KiB
Java
/**
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* ClassProvider
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* Copyright 201 by Michael Peter Christen, mc@yacy.net, Frankfurt a. M., Germany
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* First released 13.12.2011 at http://yacy.net
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*
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* $LastChangedDate$
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* $LastChangedRevision$
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* $LastChangedBy$
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program in the file lgpl21.txt
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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package net.yacy.cora.plugin;
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import java.io.File;
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import java.lang.reflect.Method;
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import java.net.MalformedURLException;
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import java.net.URL;
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import java.net.URLClassLoader;
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public class ClassProvider {
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public static Class<?> load(final String classname, final File jarfile) {
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Class<?> c;
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try {
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c = Class.forName(classname);
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} catch (final ClassNotFoundException e) {
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c = null;
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}
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if (c == null) {
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// load jar
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String path = jarfile.getAbsolutePath();
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if (File.separatorChar != '/') path = path.replace(File.separatorChar, '/');
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if (!path.startsWith("/")) path = "/" + path;
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URL[] urls;
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try {
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urls = new URL[]{new URL("file", "", path)};
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final ClassLoader cl = new URLClassLoader(urls);
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c = cl.loadClass(classname);
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} catch (final MalformedURLException e) {
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} catch (final ClassNotFoundException e) {
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}
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}
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return c;
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}
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public static Method getStaticMethod(final Class<?> c, final String methodName, final Class<?>[] args) {
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if (c == null) return null;
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try {
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return c.getMethod(methodName, args);
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} catch (final SecurityException e) {
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return null;
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} catch (final NoSuchMethodException e) {
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return null;
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}
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}
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}
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