/******************************************************************************
 * Product: JPiere                                                            *
 * Copyright (C) Hideaki Hagiwara (h.hagiwara@oss-erp.co.jp)                  *
 *                                                                            *
 * This program is free software, you can redistribute it and/or modify it    *
 * under the terms version 2 of the GNU General Public License as published   *
 * by the Free Software Foundation. This program is distributed in the hope   *
 * that it will be useful, but WITHOUT ANY WARRANTY.                          *
 * See the GNU General Public License for more details.                       *
 *                                                                            *
 * JPiere is maintained by OSS ERP Solutions Co., Ltd.                        *
 * (http://www.oss-erp.co.jp)                                                 *
 *****************************************************************************/
package jpiere.base.plugin.factory;

import java.util.logging.Level;

import jpiere.base.plugin.org.adempiere.base.IJPiereTaxProvider;
import jpiere.base.plugin.org.adempiere.base.IJPiereTaxProviderFactory;

import org.adempiere.base.equinox.EquinoxExtensionLocator;
import org.compiere.util.CLogger;

/**
 * JPIERE-0165:
 * JPiere Tax Provider Factory
 *
 *
 * @author Hideaki Hagiwara（h.hagiwara@oss-erp.co.jp）
 * @version  $Id: JPiereTaxProviderFactory.java,v 1.0 2016/03/26
 *
 */
public class JPiereBasePluginJPiereTaxProviderFactory implements IJPiereTaxProviderFactory {

	private final static CLogger s_log = CLogger.getCLogger(JPiereBasePluginJPiereTaxProviderFactory.class);

	@Override
	public IJPiereTaxProvider newJPiereTaxProviderInstance(String className) {

		if(className==null)
			return null;
		
		if(className.startsWith("jpiere.base.plugin")){


			IJPiereTaxProvider myCalculator = EquinoxExtensionLocator.instance().locate(IJPiereTaxProvider.class, className, null).getExtension();
			if (myCalculator == null)
			{
				//fall back to dynamic java class loading
				try
				{
					Class<?> ppClass = Class.forName(className);
					if (ppClass != null)
						myCalculator = (IJPiereTaxProvider) ppClass.newInstance();
				}
				catch (Error e1)
				{   //  NoClassDefFound
					s_log.log(Level.SEVERE, className + " - Error=" + e1.getMessage());
					return null;
				}
				catch (Exception e2)
				{
					s_log.log(Level.SEVERE, className, e2);
					return null;
				}
			}
			if (myCalculator == null)
			{
				return null;
			}

			return myCalculator;
		}

		return null;
	}
}
