org.eclipse.rdf4j.rio.helpers.ClassRioSetting Maven / Gradle / Ivy
/*******************************************************************************
* Copyright (c) 2019 Eclipse RDF4J contributors.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Distribution License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*******************************************************************************/
package org.eclipse.rdf4j.rio.helpers;
import org.eclipse.rdf4j.rio.RioSetting;
/**
* A {@link RioSetting} with a {@link Class} value. The given default for the setting can be overridden by means of a
* system property with a name equal to the setting key.
*
* @author Bart Hanssens
*/
public class ClassRioSetting extends AbstractRioSetting {
private static final long serialVersionUID = -4003273606390299263L;
public ClassRioSetting(String key, String description, T defaultValue) {
super(key, description, defaultValue);
}
@Override
public T convert(String stringValue) {
if (stringValue == null || stringValue.isEmpty()) {
return null;
}
try {
return (T) Class.forName(stringValue);
} catch (ClassNotFoundException ex) {
throw new RioConfigurationException(ex);
}
}
}