using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;

namespace Ant.ORM
{
    public class TableColumn
    {

        public TableColumn()
        {

        }
        private Dictionary<string, DataFieldMetaData> _fieldMeteDatas = new Dictionary<string, DataFieldMetaData>();//主表列集合
        /// <summary>
        /// 列集合
        /// </summary>
        private Dictionary<string, DataFieldMetaData> FieldMeteDatas
        {
            get { return _fieldMeteDatas; }
            set { _fieldMeteDatas = value; }
        }

        public DataFieldMetaData ColumnMetaData
        {
            get;
            set;
        }

       
        /// <summary>
        /// 列名
        /// </summary>
        public string ColumnName
        {
            get
            {
                return ColumnMetaData.ColumnName;
            }

        }

        /// <summary>
        /// 重写列名
        /// </summary>
        public string OverColumnName { get; set; }

        /// <summary>
        /// 列的类型
        /// </summary>
        public DbType ColumnType
        {
            get
            {
                return ColumnMetaData.ColumnType;
            }
        }
        /// <summary>
        /// 操作符
        /// </summary>
        public Operator Operatstr
        {
            get;
            set;
        }

        /// <summary>
        /// 表名
        /// </summary>
        public string TableName
        {
            get;
            set;
        }

        /// <summary>
        /// 列的值
        /// </summary>
        public object ColumnValue
        {
            get
            {
                return ColumnMetaData.DefaultValue;
            }
           
        }


        public MetaData md;
        /// <summary>
        /// 获取表列
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="column"></param>
        /// <param name="obj"></param>
        /// <returns></returns>
        public TableColumn GetTableColumn<T>()
        {
            md.FiledMeta = MetaDataManager.GetMetaData(typeof(T));//获取实体的元数据
            return this;
        }

        /// <summary>
        /// 获取字段
        /// </summary>
        /// <param name="column"></param>
        /// <param name="obj"></param>
        /// <returns></returns>
        public TableColumn GetFieldColumn(string column, object obj)
        {
            //ColumnMetaData = md.FiledMeta.FieldMeteDatas[column];
            //TableName = md.FiledMeta.TableName;
            
            ColumnMetaData.DefaultValue = obj;
            return this;
        }

        /// <summary>
        /// 是否相等
        /// </summary>
        /// <param name="val"></param>
        /// <returns></returns>
        public TableColumn EqualTo(object val)
        {
            ColumnMetaData.DefaultValue = val;
            Operatstr = Operator.Equal;
            return this;
        }

        /// <summary>
        /// 大于
        /// </summary>
        /// <param name="val"></param>
        /// <returns></returns>
        public TableColumn Laguage(object val)
        {
            ColumnMetaData.DefaultValue = val;
            Operatstr = Operator.Larger;
            return this;
        }
        /// <summary>
        /// 大于等于
        /// </summary>
        /// <param name="val"></param>
        /// <returns></returns>
        public TableColumn LaguageEqual(object val)
        {
            ColumnMetaData.DefaultValue = val;
            Operatstr = Operator.EqualLarger;
            return this;
        }
        /// <summary>
        /// 小于
        /// </summary>
        /// <param name="val"></param>
        /// <returns></returns>
        public TableColumn Small(object val)
        {
            ColumnMetaData.DefaultValue = val;
            Operatstr = Operator.Smaller;
            return this;
        }

        /// <summary>
        /// 小于等于
        /// </summary>
        /// <param name="val"></param>
        /// <returns></returns>
        public TableColumn SmallEqual(object val)
        {
            ColumnMetaData.DefaultValue = val;
            Operatstr = Operator.EqualSmaller;
            return this;
        }
        /// <summary>
        /// In包含查询
        /// </summary>
        /// <param name="val"></param>
        /// <returns></returns>
        public TableColumn In(object val)
        {
            ColumnMetaData.DefaultValue = val;
            Operatstr = Operator.In;
            return this;
        }
    }
}