105 lines
3.2 KiB
C#
105 lines
3.2 KiB
C#
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//using Microsoft.EntityFrameworkCore;
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//using DD.Persistence.Models.Common;
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//using DD.Persistence.ModelsAbstractions;
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//using DD.Persistence.Database.EntityAbstractions;
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//namespace DD.Persistence.Repository.Repositories;
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//public class TimestampedValuesCachedRepository<TEntity, TDto> : TimeSeriesDataRepository<TEntity, TDto>
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// where TEntity : class, ITimestampedItem, new()
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// where TDto : class, ITimestampAbstractDto, new()
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//{
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// public static TDto? FirstByDate { get; private set; }
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// public static CyclicArray<TDto> LastData { get; } = new CyclicArray<TDto>(CacheItemsCount);
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// private const int CacheItemsCount = 3600;
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// public TimestampedValuesCachedRepository(DbContext db) : base(db)
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// {
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// Task.Run(async () =>
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// {
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// var firstDateItem = await base.GetFirstAsync(CancellationToken.None);
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// if (firstDateItem == null)
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// {
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// return;
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// }
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// FirstByDate = firstDateItem;
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// var dtos = await base.GetLastAsync(CacheItemsCount, CancellationToken.None);
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// dtos = dtos.OrderBy(d => d.Timestamp);
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// LastData.AddRange(dtos);
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// }).Wait();
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// }
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// public override async Task<IEnumerable<TDto>> GetGtDate(DateTimeOffset dateBegin, CancellationToken token)
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// {
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// if (LastData.Count == 0 || LastData[0].Timestamp > dateBegin)
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// {
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// var dtos = await base.GetGtDate(dateBegin, token);
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// return dtos;
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// }
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// var items = LastData
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// .Where(i => i.Timestamp >= dateBegin);
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// return items;
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// }
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// public override async Task<int> AddRange(IEnumerable<TDto> dtos, CancellationToken token)
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// {
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// var result = await base.AddRange(dtos, token);
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// if (result > 0)
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// {
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// dtos = dtos.OrderBy(x => x.Timestamp);
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// FirstByDate = dtos.First();
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// LastData.AddRange(dtos);
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// }
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// return result;
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// }
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// public override async Task<DatesRangeDto?> GetDatesRange(CancellationToken token)
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// {
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// if (FirstByDate == null)
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// return null;
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// return await Task.Run(() =>
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// {
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// return new DatesRangeDto
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// {
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// From = FirstByDate.Timestamp,
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// To = LastData[^1].Timestamp
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// };
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// });
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// }
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// public override async Task<IEnumerable<TDto>> GetResampledData(
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// DateTimeOffset dateBegin,
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// double intervalSec = 600d,
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// int approxPointsCount = 1024,
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// CancellationToken token = default)
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// {
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// var dtos = LastData.Where(i => i.Timestamp >= dateBegin);
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// if (LastData.Count == 0 || LastData[0].Timestamp > dateBegin)
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// {
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// dtos = await base.GetGtDate(dateBegin, token);
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// }
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// var dateEnd = dateBegin.AddSeconds(intervalSec);
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// dtos = dtos
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// .Where(i => i.Timestamp <= dateEnd);
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// var ratio = dtos.Count() / approxPointsCount;
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// if (ratio > 1)
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// dtos = dtos
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// .Where((_, index) => index % ratio == 0);
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// return dtos;
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// }
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//}
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