org.jivesoftware.openfire.starter.JiveClassLoader Maven / Gradle / Ivy
/*
* Copyright (C) 2004-2008 Jive Software. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jivesoftware.openfire.starter;
import java.io.File;
import java.io.FilenameFilter;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.Arrays;
/**
* A simple classloader to extend the classpath to
* include all jars in a lib directory.
*
* The new classpath includes all *.jar and *.zip
* archives (zip is commonly used in packaging JDBC drivers). The extended
* classpath is used for both the initial server startup, as well as loading
* plug-in support jars.
*
* @author Derek DeMoro
* @author Iain Shigeoka
*/
class JiveClassLoader extends URLClassLoader {
/**
* Constructs the classloader.
*
* @param parent the parent class loader (or null for none).
* @param libDir the directory to load jar files from.
* @throws java.net.MalformedURLException if the libDir path is not valid.
*/
JiveClassLoader(ClassLoader parent, File libDir) throws MalformedURLException {
super(new URL[] { libDir.toURI().toURL() }, parent);
File[] jars = libDir.listFiles(new FilenameFilter() {
@Override
public boolean accept(File dir, String name) {
boolean accept = false;
String smallName = name.toLowerCase();
if (smallName.endsWith(".jar")) {
accept = true;
}
else if (smallName.endsWith(".zip")) {
accept = true;
}
return accept;
}
});
// Do nothing if no jar or zip files were found
if (jars == null) {
return;
}
// sort jars otherwise order differs between installations (e.g. it's not alphabetical)
// order may matter if trying to patch an install by adding patch jar to lib folder
Arrays.sort(jars);
for (int i = 0; i < jars.length; i++) {
if (jars[i].isFile()) {
addURL(jars[i].toURI().toURL());
}
}
}
}