/*
 * (c) Copyright 2010 by Volker Bergmann. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, is permitted under the terms of the
 * GNU General Public License (GPL).
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * WITHOUT A WARRANTY OF ANY KIND. ALL EXPRESS OR IMPLIED CONDITIONS,
 * REPRESENTATIONS AND WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE
 * HEREBY EXCLUDED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

package org.databene.benerator;

import org.databene.benerator.engine.DefaultBeneratorFactory;
import org.databene.benerator.engine.ResourceManager;
import org.databene.benerator.engine.parser.xml.BeneratorParseContext;
import org.databene.commons.BeanUtil;
import org.databene.commons.StringUtil;
import org.databene.commons.version.VersionInfo;

/**
 * Abstract factory class for extending Benerator.<br/><br/>
 * Created: 08.09.2010 15:43:11
 * @see DefaultBeneratorFactory
 * @since 0.6.4
 * @author Volker Bergmann
 */
public abstract class BeneratorFactory {

	public static final String BENERATOR_FACTORY_PROPERTY = "benerator.factory";

	public static final String XML_SCHEMA_PATH = "org/databene/benerator/benerator-" + VersionInfo.getInfo("benerator").getVersion() + ".xsd";
	
    public abstract BeneratorParseContext createParseContext(ResourceManager resourceManager);
    
	private static BeneratorFactory instance;

	public static final BeneratorFactory getInstance() {
		if (instance == null) {
			String configuredClass = System.getProperty(BENERATOR_FACTORY_PROPERTY);
			if (StringUtil.isEmpty(configuredClass))
				configuredClass = DefaultBeneratorFactory.class.getName();
			instance = (BeneratorFactory) BeanUtil.newInstance(configuredClass);
		}
		return instance;
	}
	
}