catalogdaofactory.java

来自「一个免费wap站」· Java 代码 · 共 50 行

package com.eline.wap.catalog.dao;

import com.eline.wap.catalog.exceptions.CatalogDAOSysException;
import com.eline.wap.common.util.AppKeys;
import com.eline.wap.common.util.AppSettings;
/**
 * 
 * @author Lucifer
 *
 */
public class CatalogDAOFactory {

	static public CatalogDAO getDAO() throws CatalogDAOSysException {
		CatalogDAO catalogDao = null;
		try {
			String provider = AppSettings.getInstance().getProperty(AppKeys.DS_TYPE);
			if (provider == null || provider.equals("") || provider.equalsIgnoreCase("SQLServer"))
				catalogDao = new MSSqlCatalogDAO();
			else if (provider.equalsIgnoreCase("Oracle"))
				throw new CatalogDAOSysException("unsupported datasource type."); 
			
			/*InitialContext ic = new InitialContext();
			String className = (String) ic.lookup(JNDINames.CATALOG_DAO_CLASS);
			catalogDao = (CatalogDAO) Class.forName(className).newInstance();*/
		} catch (CatalogDAOSysException e) {
			throw new CatalogDAOSysException("CatalogDAOFactory.getDAO:  CatalogDAOSysException while getting DAO type : \n" + e.getMessage());
		} catch (Exception e) {
			throw new CatalogDAOSysException("CatalogDAOFactory.getDAO:  Exception while getting DAO type : \n" + e.getMessage());
		}
		return catalogDao;
	}
	
	static public HotlinkDAO getHotlinkDAO() throws CatalogDAOSysException {
		HotlinkDAO dao = null;
		try {
			String provider = AppSettings.getInstance().getProperty(AppKeys.DS_TYPE);
			if (provider == null || provider.equals("") || provider.equalsIgnoreCase("SQLServer"))
				dao = new MSSqlHotlinkDAO();
			else if (provider.equalsIgnoreCase("Oracle"))
				throw new CatalogDAOSysException("unsupported datasource type."); 
		
		} catch (CatalogDAOSysException e) {
			throw new CatalogDAOSysException("CatalogDAOFactory.getHotlinkDAO:  CatalogDAOSysException while getting DAO type : \n" + e.getMessage());
		} catch (Exception e) {
			throw new CatalogDAOSysException("CatalogDAOFactory.getHotlinkDAO:  Exception while getting DAO type : \n" + e.getMessage());
		}
		return dao;
	}
}