获得参数的连接符号 - GetLikePrefix

2017-02-19 10:52:22  访问(1388) 赞(0) 踩(0)


        /// <summary>
        /// 获得参数的连接符号 - GetLikePrefix 
        /// </summary>
        /// <param name="emDataBaseHelperValue"></param>
        /// <param name="dataBaseVersion"></param>
        /// <returns></returns>
        public static string GetLikePrefix
            (
                SlowX.DAL.Enums.DataBaseHelper.EmDataBaseHelper emDataBaseHelperValue,
                int dataBaseVersion    
            )
        {
            switch (emDataBaseHelperValue)
            {
                case SlowX.DAL.Enums.DataBaseHelper.EmDataBaseHelper.Oracle:
                    return "'%'||";
                case SlowX.DAL.Enums.DataBaseHelper.EmDataBaseHelper.Access:
                case SlowX.DAL.Enums.DataBaseHelper.EmDataBaseHelper.Excel:
                case SlowX.DAL.Enums.DataBaseHelper.EmDataBaseHelper.SQLServer:
                    return "'%'+";
                default:
                    throw new Exception
                        (
                            "方法:"
                            + MethodBase.GetCurrentMethod().ReflectedType.FullName
                            + " "
                            + MethodBase.GetCurrentMethod().ToString()
                            + " 发生异常:"
                            + "枚举("
                            + emDataBaseHelperValue.GetType().FullName
                            + "."
                            + emDataBaseHelperValue.ToString()
                            + ")未知,对应的代码尚未实现。"
                        );
                    
            }             
        }


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