/**
* Copyright (C) 2007 Sly Technologies, Inc. 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
package com.slytechs.utils.factory;
import java.util.Formatter;
import org.apache.commons.logging.Log;
/**
* @author Mark Bednarczyk
* @author Sly Technologies, Inc.
*/
public class FactoryLoader<T> {
private final Log logger;
private final String property;
private final String defaults;
private T factory;
/**
* @param logger TODO
* @param property
* @param defaults
*/
public FactoryLoader(Log logger, final String property, final String defaults) {
this.logger = logger;
this.property = property;
this.defaults = defaults;
loadFactoryClass();
}
@SuppressWarnings("unchecked")
public void loadFactoryClass() {
String path = System.getProperty(property, defaults);
try {
factory = (T) Class.forName(path).newInstance();
} catch (final Exception e) {
final Formatter out = new Formatter();
logger.error(out.format("Unable to load factory class [%s]", path)
.toString());
// throw new IllegalStateException(e);
}
}
public T getFactory() {
return factory;
}
}