CYQ.Data 轻量数据访问层（三） 构造数据单元(下)

///   <summary>
     ///  只包函被填充的数据状态和值
     ///   </summary>
     public   class  MDataCellValue
    {
         ///   <summary>
         ///  //值是否为空
         ///   </summary>
         internal   bool  _IsNull;
         ///   <summary>
         ///  值是否被改变了
         ///   </summary>
         internal   bool  _IsChange;
         ///   <summary>
         ///  值是多少
         ///   </summary>
         internal   object  _Value;

         public  MDataCellValue()
        {
            _IsNull  =   true ;
            _IsChange  =   false ;
            _Value  =   null ;
        }
    }

   ///   <summary>
     ///  只包函数据库字段的属性
     ///   </summary>
     public   class  MDataCellStruct
    {
         internal   bool  _IsCanNull;
         internal   bool  _IsReadOnly;
         internal   string  _ColumnName;
         internal  System.Data.SqlDbType _SqlType;
         internal   int  _MaxSize;
         internal   string  _Operator  =   " = " ;
         internal  ParameterDirection _ParaDirection;

         #region  构造函数
         public  MDataCellStruct( string  ColumnName, System.Data.SqlDbType SqlType,  bool  IsReadOnly,  bool  IsCanNull,  int  MaxSize, ParameterDirection paraDirection)
        {
            _ColumnName  =  ColumnName;
            _SqlType  =  SqlType;
            _IsReadOnly  =  IsReadOnly;
            _IsCanNull  =  IsCanNull;
            _MaxSize  =  MaxSize;
            _ParaDirection  =  paraDirection;
        }

         #endregion

         #region  属性
         ///   <summary>
         ///  数据字段列名称
         ///   </summary>
         public   string  ColumnName
        {
             get
            {
                 return   this ._ColumnName;
            }

        }

         ///   <summary>
         ///  数据类型
         ///   </summary>
         public  System.Data.SqlDbType SqlType
        {
             get
            {
                 return   this ._SqlType;
            }
        }

         ///   <summary>
         ///  数据字段列是否为只读
         ///   </summary>
         public   bool  IsReadOnly
        {
             get
            {
                 return   this ._IsReadOnly;
            }
        }

         ///   <summary>
         ///  数据字段列长度大小
         ///   </summary>
         public   int  MaxSize
        {
             get
            {
                 return   this ._MaxSize;
            }
        }

         ///   <summary>
         ///  数据字段列值是否能为空
         ///   </summary>
         public   bool  IsCanNull
        {
             get
            {
                 return   this ._IsCanNull;
            }
        }
         ///   <summary>
         ///  存储过程时用的参数
         ///   </summary>
         public  ParameterDirection ParaDirection
        {
             get
            {
                 return   this ._ParaDirection;
            }
             set
            {
                _ParaDirection  =  (ParameterDirection)value;
            }
        }
         public   string  Operator
        {
             get
            {
                 return  _Operator;
            }
             set
            {
                _Operator  =  value;
            }
        }
         #endregion


    }