package net.sourceforge.squirrel_sql.fw.sql;
/*
* Copyright (C) 2001-2004 Colin Bell
* colbell@users.sourceforge.net
*
* 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 library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
import java.io.File;
import java.lang.reflect.Modifier;
import java.net.MalformedURLException;
import java.net.URL;
import java.sql.Driver;
import java.util.ArrayList;
import java.util.List;
import net.sourceforge.squirrel_sql.fw.util.MyURLClassLoader;
import net.sourceforge.squirrel_sql.fw.util.log.ILogger;
import net.sourceforge.squirrel_sql.fw.util.log.LoggerController;
public class SQLDriverClassLoader extends MyURLClassLoader
{
/** Logger for this class. */
private final static ILogger s_log =
LoggerController.createLogger(SQLDriverClassLoader.class);
public SQLDriverClassLoader(ISQLDriver sqlDriver) throws MalformedURLException
{
super(createURLs(sqlDriver.getName(), sqlDriver.getJarFileNames()));
}
public SQLDriverClassLoader(URL[] urls)
{
super(urls);
}
public SQLDriverClassLoader(URL url)
{
super(url);
}
public Class<?>[] getDriverClasses(ILogger logger)
{
final Class<?>[] classes = getAssignableClasses(Driver.class, logger);
final List<Class<?>> list = new ArrayList<Class<?>>();
for (int i = 0; i < classes.length; ++i)
{
Class<?> clazz = classes[i];
if (!Modifier.isAbstract(clazz.getModifiers()))
{
list.add(clazz);
}
}
return list.toArray(new Class[list.size()]);
}
private static URL[] createURLs(String driverName, String[] fileNames)
throws MalformedURLException
{
if (fileNames == null)
{
fileNames = new String[0];
}
URL[] urls = new URL[fileNames.length];
for (int i = 0; i < fileNames.length; ++i)
{
File f = new File(fileNames[i]);
if (!f.exists()) {
s_log.info(
"For driver '"+driverName+"', the JVM says file doesn't exist: "+
fileNames[i]);
}
if (f.isDirectory()) {
s_log.info(
"For driver '"+driverName+"', the JVM says the file is a directory: "+
fileNames[i]);
}
if (!f.canRead()) {
s_log.info(
"For driver '"+driverName+"', the JVM says the file can't be read: "+
fileNames[i]);
}
urls[i] = f.toURI().toURL();
}
return urls;
}
}