ExporterFactory.java

/*******************************************************************************
   Copyright 2013 Johannes Mitlmeier

   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 de.fub.agg2graph.osm;


/**
 * A factory that returns the {@link IExporter} currently set via the getObject
 * method.
 * 
 * @author Johannes Mitlmeier
 * 
 */
public class ExporterFactory {
	/*
	 * Default class to return. Can be overwritten by calls to setClass.
	 */
	private static Class<?> factoryClass = OsmExporter.class;

	public static void setClass(Class<?> clazz) {
		factoryClass = clazz;
	}

	public static IExporter getObject() {
		if (factoryClass == null) {
			return null;
		}
		try {
			return (IExporter) factoryClass.newInstance();
		} catch (InstantiationException e) {
			e.printStackTrace();
			return null;
		} catch (IllegalAccessException e) {
			e.printStackTrace();
			return null;
		}
	}
}