OA2021/DAL/GoogleMapApiResultService.cs

using Models;
using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;


namespace DAL
{
    public class GoogleMapApiResultService
    {

        //增
        public Boolean Add(GoogleMapApiResult g)
        {
            //select @@identity可获取插入记录时生成的标识ID        
            string sql = "insert into GoogleMapApiResult Values(@Diid,@Date,@Moment,@StartAddress,@EndAddress,@Time,@Distance);SELECT @@IDENTITY ";
            SqlParameter[] param = new SqlParameter[]
            {
               new SqlParameter("@Diid",g.Diid),
               new SqlParameter("@Date",g.Date),
               new SqlParameter("@Moment",g.Moment),
               new SqlParameter("@StartAddress",g.StartAddress),
               new SqlParameter("@EndAddress",g.EndAddress),
               new SqlParameter("@Time",g.Time),
               new SqlParameter("@Distance",g.Distance)
            };
            //执行,得到受影响行数
            int affectRows = SqlHelper.ExecuteNonQuery(sql, CommandType.Text, param);

            if (affectRows > 0)
            {
                return true;
            }
            else
            {
                return false;
            }
        }
        //删
        public bool Del(int id)
        {
            string sql = "Delete from GoogleMapApiResult where Id=" + id;
            //执行,得到受影响行数
            int affectRows = SqlHelper.ExecuteNonQuery(sql, CommandType.Text);

            if (affectRows > 0)
            {
                return true;
            }
            else
            {
                return false;
            }
        }
        //改
        public bool Edit(GoogleMapApiResult g)
        {

            string sql = "Update GoogleMapApiResult set Diid=@Diid,Date=@Date,Time=@Time,Distance=@Distance where Id=@Id";

            SqlParameter[] param = new SqlParameter[]
            {
               new SqlParameter("@Diid",g.Diid),
               new SqlParameter("@Date",g.Date),
               new SqlParameter("@Moment",g.Moment),
               new SqlParameter("@StartAddress",g.StartAddress),
               new SqlParameter("@EndAddress",g.EndAddress),
               new SqlParameter("@Time",g.Time),
               new SqlParameter("@Distance",g.Distance),
               new SqlParameter("@Id",g.Id)
            };
            //执行,得到受影响行数
            int affectRows = SqlHelper.ExecuteNonQuery(sql, CommandType.Text, param);

            if (affectRows > 0)
            {
                return true;
            }
            else
            {
                return false;
            }
        }


        /// <summary>
        /// 多个查询
        /// </summary>
        /// <returns></returns>
        public List<GoogleMapApiResult> GetMultiple()
        {
            return excuteMultiple("Select * from  GoogleMapApiResult");
        }
        /// <summary>
        /// 单查询
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        public GoogleMapApiResult GetSingle(int id)
        {
            return excuteSingle("Select * from  GoogleMapApiResult where Id=" + id);
        }
        /// <summary>
        /// 条件查询
        /// </summary>
        /// <param name="diid"></param>
        /// <param name="startaddress"></param>
        /// <param name="endadress"></param>
        /// <returns></returns>
        public GoogleMapApiResult GetByDiidAddress(int diid, string startaddress, string endadress)
        {
            return excuteSingle("select * from GoogleMapApiResult where Diid=" + diid + " and StartAddress='" + startaddress + "' and EndAddress='" + endadress + "'");
        }



        //分页查询;多个
        /// <summary>
        /// 条件查询
        /// </summary>
        /// <param name="startaddress">起始地址</param>
        /// <param name="endadress">目的地址</param>
        /// <returns></returns>
        public GoogleMapApiResult GetByAddress(string startaddress, string endadress)
        {
            return excuteSingle("select * from GoogleMapApiResult where StartAddress='" + startaddress + "' and EndAddress='" + endadress + "'");
        }
        //条件查询2;多个
        //...


        /// <summary>
        ///查询读取执行入口
        /// </summary>
        /// <param name="sql"></param>
        /// <param name="param"></param>
        /// <returns>返回集合</returns>
        List<GoogleMapApiResult> excuteMultiple(string sql, params SqlParameter[] param)
        {
            List<GoogleMapApiResult> list = ServiceBase<GoogleMapApiResult>.excuteSql(new GoogleMapApiResult(), "GoogleMapApiResult", sql, CommandType.Text, param);
            return list;
        }



        /// <summary>
        ///查询读取执行入口
        /// </summary>
        /// <param name="sql"></param>
        /// <param name="param"></param>
        /// <returns>返回单个对象</returns>
        GoogleMapApiResult excuteSingle(string sql, params SqlParameter[] param)
        {
            List<GoogleMapApiResult> list = excuteMultiple(sql, param);

            if (list == null || list.Count == 0)
            {
                return null;
            }
            else
            {
                return list[0];
            }
        }
    }
}