maersai_heavy_back_main/Service/Station/SwapOrderBatteryService.cs

using Entity.Api.Req;
using Entity.Api.Resp;
using Entity.DbModel.Station;
using HybirdFrameworkCore.Autofac.Attribute;
using HybirdFrameworkCore.Entity;
using Repository.Station;
using SqlSugar;
using System.Linq.Expressions;

namespace Service.Station;
/// <summary>
/// 换电订单电池
/// </summary>
[Scope("SingleInstance")]
public class SwapOrderBatteryService : BaseServices<SwapOrderBattery>
{
    SwapOrderBatteryRepository _swapOrderBatteryRepository;
    public SwapOrderBatteryService(SwapOrderBatteryRepository dal)
    {
        _swapOrderBatteryRepository = dal;
        BaseDal = dal;
    }


    /// <summary>
    /// 根据条件查询分页数据
    /// </summary>
    /// <param name="equipAlarmLevel"></param>
    /// <returns></returns>
    public PageResult<SwapOrderBatteryResp> QuerySwapOrderBattery(QuerySwapOrderBatteryReq swapOrderBattery)
    {
        
        //创建一个空的表达式树
        Expression<Func<SwapOrderBattery, bool>> where = null;
        //// 定义参数表达式
        ParameterExpression parameter = Expression.Parameter(typeof(SwapOrderBattery), "u");

        #region 构建动态查询树
        if (swapOrderBattery.Id != 0)
        {
            Expression<Func<SwapOrderBattery, bool>> condition1Expr = u => u.Id == swapOrderBattery.Id;
            where = condition1Expr;
        }
        if (!string.IsNullOrEmpty(swapOrderBattery.SwapOrderSn))
        {
            Expression<Func<SwapOrderBattery, bool>> condition2Expr = u => u.SwapOrderSn == swapOrderBattery.SwapOrderSn;
            where = where == null ? condition2Expr : Expression.Lambda<Func<SwapOrderBattery, bool>>(Expression.AndAlso(where.Body, condition2Expr.Body), parameter);
        }
        if (!string.IsNullOrEmpty(swapOrderBattery.DownBatteryNo))
        {
            Expression<Func<SwapOrderBattery, bool>> condition2Expr = u => u.DownBatteryNo == swapOrderBattery.DownBatteryNo;
            where = where == null ? condition2Expr : Expression.Lambda<Func<SwapOrderBattery, bool>>(Expression.AndAlso(where.Body, condition2Expr.Body), parameter);
        }

        if (swapOrderBattery.DownBatteryBinNo != 0)
        {
            Expression<Func<SwapOrderBattery, bool>> condition2Expr = u => u.DownBatteryBinNo == swapOrderBattery.DownBatteryBinNo;
            where = where == null ? condition2Expr : Expression.Lambda<Func<SwapOrderBattery, bool>>(Expression.AndAlso(where.Body, condition2Expr.Body), parameter);
        }
        if (!string.IsNullOrEmpty(swapOrderBattery.UpBatteryNo))
        {
            Expression<Func<SwapOrderBattery, bool>> condition2Expr = u => u.UpBatteryNo == swapOrderBattery.UpBatteryNo;
            where = where == null ? condition2Expr : Expression.Lambda<Func<SwapOrderBattery, bool>>(Expression.AndAlso(where.Body, condition2Expr.Body), parameter);
        }
        if (swapOrderBattery.UpBatteryBinNo != 0)
        {
            Expression<Func<SwapOrderBattery, bool>> condition2Expr = u => u.UpBatteryBinNo == swapOrderBattery.UpBatteryBinNo;
            where = where == null ? condition2Expr : Expression.Lambda<Func<SwapOrderBattery, bool>>(Expression.AndAlso(where.Body, condition2Expr.Body), parameter);
        }
        if (swapOrderBattery.CreatedTime != null && swapOrderBattery.CreatedTime != DateTime.MinValue)
        {
            Expression<Func<SwapOrderBattery, bool>> condition2Expr = u => u.CreatedTime == swapOrderBattery.CreatedTime;
            where = where == null ? condition2Expr : Expression.Lambda<Func<SwapOrderBattery, bool>>(Expression.AndAlso(where.Body, condition2Expr.Body), parameter);
        }
        if (swapOrderBattery.UpdatedTime != null && swapOrderBattery.UpdatedTime != DateTime.MinValue)
        {
            Expression<Func<SwapOrderBattery, bool>> condition2Expr = u => u.UpdatedTime == swapOrderBattery.UpdatedTime;
            where = where == null ? condition2Expr : Expression.Lambda<Func<SwapOrderBattery, bool>>(Expression.AndAlso(where.Body, condition2Expr.Body), parameter);
        }
        #endregion

        //查询
        return PageResult<SwapOrderBatteryResp>.ConvertPage(_swapOrderBatteryRepository.QueryIPageByCause(swapOrderBattery, where));


    }
}