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根据时间步进级别调整时间，解决每月每年时间不固定的问题

This commit is contained in:
智能大石头 2024-07-27 18:42:30 +08:00
parent 40a2e838c4
commit 79a3c25c9d
1 changed files with 33 additions and 2 deletions
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35
XCode/Shards/TimeShardPolicy.cs
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@ -1,5 +1,6 @@
using NewLife;
using XCode.Configuration;
using XCode.Statistics;
namespace XCode.Shards;
@ -22,6 +23,9 @@ public class TimeShardPolicy : IShardPolicy
/// <summary>时间区间步进。遇到时间区间需要扫描多张表时的时间步进，默认1天</summary>
public TimeSpan Step { get; set; } = TimeSpan.FromDays(1);
/// <summary>日期级别。年月日</summary>
public StatLevels Level { get; set; }
private readonly String? _fieldName;
#endregion
@ -227,14 +231,29 @@ public class TimeShardPolicy : IShardPolicy
{
var models = new List<ShardModel>();
// 猜测时间步进级别
var st = Step;
var level = Level;
if (level <= 0)
{
if (st.TotalDays >= 360)
level = StatLevels.Year;
else if (st.TotalDays >= 28 && st.TotalDays <= 31)
level = StatLevels.Month;
else if (st.TotalDays == 1)
level = StatLevels.Day;
else if (st.TotalHours == 1)
level = StatLevels.Hour;
}
// 根据不仅，把start调整到整点
if (Step.TotalDays >= 1)
if (st.TotalDays >= 1)
start = start.Date;
else if (start.Hour >= 1)
start = start.Date.AddHours(start.Hour);
var hash = new HashSet<String>();
for (var dt = start; dt < end; dt = dt.Add(Step))
for (var dt = start; dt < end;)
{
var model = Shard(dt);
if (model != null)
@ -246,6 +265,18 @@ public class TimeShardPolicy : IShardPolicy
hash.Add(key);
}
}
// 根据时间步进级别调整时间，解决每月每年时间不固定的问题
if (level == StatLevels.Year)
dt = dt.AddYears(1);
else if (level == StatLevels.Month)
dt = dt.AddMonths(1);
else if (level == StatLevels.Day)
dt = dt.AddDays(1);
else if (level == StatLevels.Hour)
dt = dt.AddHours(1);
else
dt = dt.Add(st);
}
//// 标准时间区间 start <= @fi < end ，但是要考虑到end有一部分落入新的分片，减一秒判断