Master.CanYinWu.DAL/CategoryDAL.cs

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using Dapper;
using Master.CanYinWu.Entity;
using Master.CanYinWu.Entity.ViewModel;
using Master.CanYinWu.Utility;
using System;
using System.Collections.Generic;
using System.Data;
using System.Text;
using System.Threading.Tasks;
using System.Linq;

namespace Master.CanYinWu.DAL
{
    public class CategoryDAL
    {
        private IDbConnection conn;

        #region 分类列表
        /// <summary>
        /// 分类列表
        /// </summary>
        /// <param name="pageIndex"></param>
        /// <param name="pageSize"></param>
        /// <param name="key"></param>
        /// <param name="bigCategoryId">行业分类Id</param>
        /// <returns></returns>
        public async Task<Tuple<IEnumerable<CategoryViewModel>, int>> GetList(int pageIndex, int pageSize, string key, int bigCategoryId = 0,int storeId=0)
        {
            StringBuilder sb = new StringBuilder(@"select tab.*,(select CategoryName from Category as atc where atc.CategoryId=tab.ParentId)as CategoryParentName,
                                                        (select COUNT(1) from Category where ParentId=tab.CategoryId)as ExitCategoryNumbers
                                                   from(select * from(select *,ROW_NUMBER() over (order by CategoryId asc) as  rownumber  from  Category where IsDelete =0 and storeId=@StoreId ");
            DynamicParameters dp = new DynamicParameters();
            dp.Add("PageIndex", pageIndex);
            dp.Add("PageSize", pageSize);
            dp.Add("StoreId", storeId);
            StringBuilder sqlTotal = new StringBuilder(@"select count(1)  from Category where IsDelete =0 and storeId=@StoreId ");
            DynamicParameters dpTotal = new DynamicParameters();
            dpTotal.Add("StoreId", storeId);
            if (!string.IsNullOrEmpty(key))
            {
                sb.Append(" and CategoryName like '%'+@Key+'%' ");
                sqlTotal.Append(" and CategoryName like '%'+@Key+'%' ");
                dp.Add("Key", key);
                dpTotal.Add("Key", key);
            }
            if (bigCategoryId > 0)
            {
                sb.Append(" and ParentId=@ParentId ");
                sqlTotal.Append(" and ParentId=@ParentId ");
                dp.Add("ParentId", bigCategoryId);
                dpTotal.Add("ParentId", bigCategoryId);
            }
            sb.Append(" )as a where rownumber BETWEEN(((@PageIndex - 1) * @PageSize) + 1) and @PageIndex * @PageSize)as tab ");
            using (conn = ConnectionFactory.Connection())
            {
                var query = await conn.QueryAsync<CategoryViewModel>(sb.ToString(), dp);
                var total = await conn.ExecuteScalarAsync<int>(sqlTotal.ToString(), dpTotal);
                return new Tuple<IEnumerable<CategoryViewModel>, int>(query, total);
            }
        }