MESProductionWeb/AntORM/Ant.Data/DataBaisc/DBHandlerFactory.cs

using System;
using System.Configuration;
namespace ETD.Data
{
    /// <summary>
    /// 数据库类创建工厂
    /// </summary>
    public class DBHandlerFactory
    {
        /// <summary>
        /// 获得连接数据的类型
        /// </summary>
        private static string DefaultconnectionType = ConfigurationManager.AppSettings["DefaultDBConnectionType"];
        /// <summary>
        /// 是否是同一个数据库
        /// </summary>
        private static string IsSameDB = ConfigurationManager.AppSettings["IsSameDB"];
        /// <summary>
        /// 各个模块的连接数据库类型的字符串
        /// </summary>
        private static string moduleconnectionType = string.Empty;

        /// <summary>
        /// 创建数据库连接对象
        /// </summary>
        /// <returns>数据库连接对象</returns>
        public static IDBHandlerble CreateDBHander()
        {
            switch (DefaultconnectionType.ToString().ToLower().Trim())
            {
                case "mssql":
                    return new SQLDBHandler();

                case "mysql":
                    return new MySQLDBHandler();

                case "access":
                    return new AccessDBHandler();

                //case "oracle":
                //    return new ORACLEDBHandler();

                default:
                    return new SQLDBHandler();
            }
        }

        /// <summary>
        /// 创建数据库连接对象,(暂时不使用)
        /// </summary>
        /// <param name="module">某一个模块的关键字</param>
        /// <returns>数据库连接对象</returns>
        public static IDBHandlerble CreateDBHander(string module)
        {
            if (!(IsSameDB == "0"))
            {
                return CreateDBHander();
            }
            if (module == string.Empty)
            {
                module = "Default";
            }
            moduleconnectionType = ConfigurationManager.AppSettings[module + "DBConnectionType"];
            switch (moduleconnectionType.ToString().ToLower().Trim())
            {
                case "mssql":
                    return new SQLDBHandler(module);

                case "mysql":
                    return new MySQLDBHandler(module);

                case "access":
                    return new AccessDBHandler(module);

                //case "oracle":
                //    return new ORACLEDBHandler(module);

                default:
                    return new SQLDBHandler(module);
            }

        }
    }
}