75 lines
2.6 KiB
C#
75 lines
2.6 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq.Expressions;
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using ShardingCore.Core.VirtualRoutes;
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using ShardingCore.Core.VirtualRoutes.TableRoutes;
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using ShardingCore.Core.VirtualRoutes.TableRoutes.Abstractions;
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using ShardingCore.Test50_2x.Domain.Entities;
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namespace ShardingCore.Test50_2x.Shardings
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{
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/*
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* @Author: xjm
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* @Description:
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* @Date: Monday, 01 February 2021 15:54:55
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* @Email: 326308290@qq.com
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*/
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public class SysUserSalaryVirtualTableRoute:AbstractShardingOperatorVirtualTableRoute<SysUserSalary,int>
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{
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protected override int ConvertToShardingKey(object shardingKey)
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{
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return Convert.ToInt32(shardingKey);
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}
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public override string ShardingKeyToTail(object shardingKey)
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{
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var time = ConvertToShardingKey(shardingKey);
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return TimeFormatToTail(time);
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}
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public override List<string> GetAllTails()
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{
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var beginTime = new DateTime(2020, 1, 1);
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var endTime = new DateTime(2021, 12, 1);
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var list = new List<string>(24);
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var tempTime = beginTime;
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while (tempTime <= endTime)
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{
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list.Add($"{tempTime:yyyyMM}");
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tempTime = tempTime.AddMonths(1);
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}
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return list;
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}
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protected string TimeFormatToTail(int time)
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{
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var dateOfMonth=DateTime.ParseExact($"{time}","yyyyMM",System.Globalization.CultureInfo.InvariantCulture,System.Globalization.DateTimeStyles.AdjustToUniversal);
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return $"{dateOfMonth:yyyyMM}";
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}
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protected override Expression<Func<string, bool>> GetRouteToFilter(int shardingKey, ShardingOperatorEnum shardingOperator)
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{
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var t = TimeFormatToTail(shardingKey);
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switch (shardingOperator)
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{
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case ShardingOperatorEnum.GreaterThan:
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case ShardingOperatorEnum.GreaterThanOrEqual:
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return tail => String.Compare(tail, t, StringComparison.Ordinal) >= 0;
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case ShardingOperatorEnum.LessThan:
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return tail => String.Compare(tail, t, StringComparison.Ordinal) < 0;
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case ShardingOperatorEnum.LessThanOrEqual:
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return tail => String.Compare(tail, t, StringComparison.Ordinal) <= 0;
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case ShardingOperatorEnum.Equal: return tail => tail == t;
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default:
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{
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#if DEBUG
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Console.WriteLine($"shardingOperator is not equal scan all table tail");
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#endif
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return tail => true;
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}
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}
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}
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}
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} |