SourceCode/RFrameGenerate.DAL/DataBase/SQLServer/View/T_ST_ActivityOrdersDAL.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Text;
using System.Data.SqlClient;
using System.Data;
using System.Transactions;
using RFrameGenerate.Model; 
using RFrameGenerate.DAL.Enums;
using RFrameGenerate.DAL.Interface;
using RFrameGenerate.Common;
using RFramework.SQLQuery;
using RFramework.SQLServer;
using RFramework.SQLServer.Enums;

namespace RFrameGenerate.DAL.SQLServer
{
    internal class T_ST_ActivityOrdersDAL  : IQuery<T_ST_ActivityOrders>
    {  
        /// <summary>
        /// 事务处理
        /// </summary>
        public SqlRTransaction sqlRTransaction { get; set; }
        
         #region Top
        /// <summary>
        /// 获取前Top，根据查询条件Lambda表达式及排序字段Lambda表达式、排序方法
        /// </summary>
        /// <param name="conditionExpression">查询条件Lambda表达式</param>
        /// <param name="orderString">排序字段Lambda表达式，字段间用“+”号连接</param>
        /// <param name="orderMethod">排序方法，升序或降序排列</param>
        /// <returns>返回满足条件的记录集</returns>
        public List<T_ST_ActivityOrders>  GetTopData(string top, Expression<Func<T_ST_ActivityOrders , bool>> conditionExpression, bool isFilterNull = false, Expression<Func<T_ST_ActivityOrders , object>> orderExpression = null, OrderMethods orderMethod = OrderMethods.Default, LockType flag = LockType.Default, bool isFilterMerchant = true)
        {
            QueryTranslator where = new QueryTranslator();
            string conditionString = where.Translate(conditionExpression);
            string orderString = string.Empty;
            if (orderExpression != null)
                orderString = where.Translate(orderExpression);
            if (isFilterNull == true)
                conditionString = conditionString.SqlFilterNull();

            return GetTopData(top,conditionString, orderString, orderMethod, flag,isFilterMerchant);
        }

        /// <summary>
        /// 获取Top，根据查询条件及排序字段、排序方法
        /// </summary>
        /// <param name="top"></param>
        /// <param name="conditionString">查询条件字符串，SQL语句中的WHERE表达式</param>
        /// <param name="orderString">排序字段字符串，SQL语句中的OrderBy表达式，字段间用“,”号隔开</param>
        /// <param name="orderMethod">排序方法，升序或降序排列</param>
        /// <returns>返回满足条件的第一条记录，记录不存在则返回Null</returns>
         public List<T_ST_ActivityOrders> GetTopData(string top,string conditionString = "", string orderString = "", OrderMethods orderMethod = OrderMethods.Default, LockType flag = LockType.NOLOCK, bool isFilterMerchant = true)
        {
            if (string.IsNullOrEmpty(top) == true)
            {
                throw new Exception("top不能为空,例:top=6或top=10%");
            }