using System;
using System.Data;
using System.Collections.Generic;
using Ant.ORM.SQL;
namespace Ant.ORM.Table
{
    //internal class ValueFormat
    //{
    //    public static bool IsFormat = false;
    //    public static string formatString = "{0}";
    //    public static string Format(object value)
    //    {
    //        return string.Format(formatString, value);
    //    }
    //    public static void Reset()
    //    {
    //        IsFormat = false;
    //        formatString = "{0}";
    //    }
    //}
    /// <summary>
    /// 单元值
    /// </summary>
    public class CellValue
    {
        internal bool IsNull = true;
        internal bool IsChange = false;
        internal object Value = null;
    }

    /// <summary>
    /// 单元结构属性
    /// </summary>
    public class CellStruct
    {
        public bool IsCanNull;
        public bool IsReadOnly;
        public string ColumnName;
        public System.Data.SqlDbType SqlType;
        public int MaxSize;
        public string Operator = "=";
        public ParameterDirection ParaDirection;
        internal Type ValueType;
        #region 构造函数
        public CellStruct(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;
            ValueType = DataType.GetType(sqlType);
        }
        #endregion
    }
    /// <summary>
    /// 单元格
    /// </summary>
    public class MDataCell
    {
        internal CellValue _CellValue;
        internal CellStruct _CellStruct;

        #region 构造函数
        internal MDataCell(ref CellStruct dataStruct)
        {
            Init(dataStruct, null);
        }

        internal MDataCell(ref CellStruct dataStruct, object value)
        {
            Init(dataStruct, value);
        }

        #endregion

        #region 初始化
        private void Init(CellStruct dataStruct, object value)
        {
            _CellValue = new CellValue();
            _CellStruct = dataStruct;
            _CellValue.Value = value;
        }
        #endregion

        #region 属性


        public object Value
        {
            get
            {

                return _CellValue.Value;
            }
            set
            {
                //if (value != null)
                //{
                _CellValue.IsChange = true;
                _CellValue.IsNull = value == null || value == DBNull.Value || (this._CellStruct.ValueType.Name == "DateTime" && Convert.ToString(value) == "");
                //if (ValueFormat.IsFormat && DataType.GetGroupID(_CellStruct.SqlType) == 0)
                //{
                //    _CellValue.Value = ValueFormat.Format(value);
                //}
                //else
                //{
                _CellValue.Value = value;
                //}
                //if (_CellValue.ValueType == null)
                //{
                //    _CellValue.ValueType = value.GetType();
                //}
                //}

            }
        }
        #endregion


    }





}