using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ZKLT.Hadoop.Model
{
    /// <summary>
    /// 数据列
    /// </summary>
    [AttributeUsage(AttributeTargets.Property, Inherited = true)]
    [HDP_Table(Key = "HDP_Column", Description = "列")]
    public class HDP_Column : Attribute
    {
        private string? _Id;

        private string? _TableId;

        private string? _Key;

        private bool _IsPrimary;

        private string? _Description;

        private string? _DataType;

        private int _Length;

        private int _DecimalLength;

        /// <summary>
        /// 编号
        /// </summary>
        [HDP_Column(Key = "Id",Description = "编号", Length = 100, DataType = HDP_ColumnDataType.VARCHAR, IsPrimary = true)]
        public string? Id { get => _Id; set => _Id = value; }

        /// <summary>
        /// 表编号
        /// </summary>
        [HDP_Column(Key = "TableId",Description = "表编号", Length = 100, DataType = HDP_ColumnDataType.VARCHAR)]
        public string? TableId { get => _TableId; set => _TableId = value; }

        /// <summary>
        /// 列名
        /// </summary>
        [HDP_Column(Key = "Key", Description = "列名", Length = 100, DataType = HDP_ColumnDataType.VARCHAR)]
        public string? Key { get => _Key; set => _Key = value; }

        /// <summary>
        /// 是否主键
        /// </summary>
        [HDP_Column(Key = "IsPrimary", Description = "是否主键", DataType = HDP_ColumnDataType.BOOL)]
        public bool IsPrimary { get => _IsPrimary; set => _IsPrimary = value; }

        /// <summary>
        /// 描述
        /// </summary>
        [HDP_Column(Key = "Description", Description = "描述",Length = 200, DataType = HDP_ColumnDataType.VARCHAR)]
        public string? Description { get => _Description; set => _Description = value; }

        /// <summary>
        /// 数据类型
        /// </summary>
        [HDP_Column(Key = "DataType", Description = "数据类型", Length = 100, DataType = HDP_ColumnDataType.VARCHAR)]
        public string? DataType { get => _DataType; set => _DataType = value; }

        /// <summary>
        /// 长度
        /// </summary>
        [HDP_Column(Key = "Length", Description = "长度", DataType = HDP_ColumnDataType.INT)]
        public int Length { get => _Length; set => _Length = value; }

        /// <summary>
        /// 小数长度
        /// </summary>
        [HDP_Column(Key = "DecimalLength", Description = "小数长度", DataType = HDP_ColumnDataType.INT)]
        public int DecimalLength { get => _DecimalLength; set => _DecimalLength = value; }
    }
}