private IEnumerable <FrozenPeriod> SubdivideCompactionPeriod(FrozenPeriod Original, FrozenPeriod New)
{
var inter = FrozenPeriod.Intersect(Original.Range, New.Range);
if (FrozenPeriod.IsEmptyRange(inter))
{
return(new FrozenPeriod[] { Original });
}
else
{
return(new FrozenPeriod[]
{
new FrozenPeriod(Original.StartTime, inter.Item1, Original.Compaction),
new FrozenPeriod(inter.Item1, inter.Item2, FrozenPeriod.Max(Original.Compaction, New.Compaction)),
new FrozenPeriod(inter.Item2, Original.EndTime, Original.Compaction)
}.Where(item => !item.IsEmpty));
}
}
private async Task <IEnumerable <Measurement> > GetMeasurementsAsync(FrozenPeriod Period)
{
const int MinutesPerHour = 60;
switch (Period.Compaction)
{
case CompactionLevel.DayAverages:
case CompactionLevel.HourAverages:
case CompactionLevel.Measurements:
// We'll re-create measurement data by replicating
// hour-average data.
var results = await GetHourAveragesAsync(
MeasurementAggregation.Quantize(Period.StartTime, TimeSpan.FromHours(1)),
(int)Math.Ceiling(Period.Duration.TotalHours));
return(ReplicateEach(results, Period.StartTime, Period.EndTime, TimeSpan.FromMinutes(1), MinutesPerHour).ToArray());
case CompactionLevel.None:
default:
// We can just fetch real measurements from the database.
return(await Database.GetRawMeasurementsAsync(SensorId, Period.StartTime, Period.EndTime));
}
}
private async Task <IEnumerable <Measurement> > GetHourAveragesAsync(FrozenPeriod Period)
{
const int HoursPerDay = 24;
switch (Period.Compaction)
{
case CompactionLevel.DayAverages:
case CompactionLevel.HourAverages:
// We'll re-create hour-average data by replicating
// day-average data.
var results = await GetDayAveragesAsync(
MeasurementAggregation.Quantize(Period.StartTime, TimeSpan.FromDays(1)),
(int)Math.Ceiling(Period.Duration.TotalDays));
return(ReplicateEach(results, Period.StartTime, Period.EndTime, TimeSpan.FromHours(1), HoursPerDay).ToArray());
case CompactionLevel.Measurements:
case CompactionLevel.None:
default:
// We can just fetch or create "real" hour-average data.
return(await GetRealHourAveragesAsync(Period.StartTime, (int)Period.Duration.TotalHours));
}
}
private async Task <IEnumerable <Measurement> > GetDayAveragesAsync(FrozenPeriod Period)
{
switch (Period.Compaction)
{
case CompactionLevel.DayAverages:
// We'll re-create day-average data by replicating
// month-average data.
var results = new List <Measurement>();
for (var day = Period.StartTime; day < Period.EndTime; day = day.AddDays(1))
{
var monthMeasurement = await GetMonthAverageAsync(MeasurementAggregation.QuantizeMonth(day));
results.Add(new Measurement(SensorId, day, monthMeasurement.MeasuredData, monthMeasurement.Notes));
}
return(results);
case CompactionLevel.HourAverages:
case CompactionLevel.Measurements:
case CompactionLevel.None:
default:
// We can just fetch or create "real" day-average data.
return(await GetRealDayAveragesAsync(Period.StartTime, (int)Period.Duration.TotalDays));
}
}
/// <summary>
/// Tests if this time period overlaps with the given
/// time period.
/// </summary>
public bool OverlapsWith(FrozenPeriod Other)
{
return Other.StartTime <= this.EndTime && this.StartTime <= Other.EndTime;
}
private async Task<IEnumerable<Measurement>> GetMeasurementsAsync(FrozenPeriod Period)
{
const int MinutesPerHour = 60;
switch (Period.Compaction)
{
case CompactionLevel.DayAverages:
case CompactionLevel.HourAverages:
case CompactionLevel.Measurements:
// We'll re-create measurement data by replicating
// hour-average data.
var results = await GetHourAveragesAsync(
MeasurementAggregation.Quantize(Period.StartTime, TimeSpan.FromHours(1)),
(int)Math.Ceiling(Period.Duration.TotalHours));
return ReplicateEach(results, Period.StartTime, Period.EndTime, TimeSpan.FromMinutes(1), MinutesPerHour).ToArray();
case CompactionLevel.None:
default:
// We can just fetch real measurements from the database.
return await Database.GetRawMeasurementsAsync(SensorId, Period.StartTime, Period.EndTime);
}
}
private async Task<IEnumerable<Measurement>> GetHourAveragesAsync(FrozenPeriod Period)
{
const int HoursPerDay = 24;
switch (Period.Compaction)
{
case CompactionLevel.DayAverages:
case CompactionLevel.HourAverages:
// We'll re-create hour-average data by replicating
// day-average data.
var results = await GetDayAveragesAsync(
MeasurementAggregation.Quantize(Period.StartTime, TimeSpan.FromDays(1)),
(int)Math.Ceiling(Period.Duration.TotalDays));
return ReplicateEach(results, Period.StartTime, Period.EndTime, TimeSpan.FromHours(1), HoursPerDay).ToArray();
case CompactionLevel.Measurements:
case CompactionLevel.None:
default:
// We can just fetch or create "real" hour-average data.
return await GetRealHourAveragesAsync(Period.StartTime, (int)Period.Duration.TotalHours);
}
}
private async Task<IEnumerable<Measurement>> GetDayAveragesAsync(FrozenPeriod Period)
{
switch (Period.Compaction)
{
case CompactionLevel.DayAverages:
// We'll re-create day-average data by replicating
// month-average data.
var results = new List<Measurement>();
for (var day = Period.StartTime; day < Period.EndTime; day = day.AddDays(1))
{
var monthMeasurement = await GetMonthAverageAsync(MeasurementAggregation.QuantizeMonth(day));
results.Add(new Measurement(SensorId, day, monthMeasurement.MeasuredData, monthMeasurement.Notes));
}
return results;
case CompactionLevel.HourAverages:
case CompactionLevel.Measurements:
case CompactionLevel.None:
default:
// We can just fetch or create "real" day-average data.
return await GetRealDayAveragesAsync(Period.StartTime, (int)Period.Duration.TotalDays);
}
}
private IEnumerable<FrozenPeriod> SubdivideCompactionPeriod(FrozenPeriod Original, FrozenPeriod New)
{
var inter = FrozenPeriod.Intersect(Original.Range, New.Range);
if (FrozenPeriod.IsEmptyRange(inter))
{
return new FrozenPeriod[] { Original };
}
else
{
return new FrozenPeriod[]
{
new FrozenPeriod(Original.StartTime, inter.Item1, Original.Compaction),
new FrozenPeriod(inter.Item1, inter.Item2, FrozenPeriod.Max(Original.Compaction, New.Compaction)),
new FrozenPeriod(inter.Item2, Original.EndTime, Original.Compaction)
}.Where(item => !item.IsEmpty);
}
}
/// <summary>
/// Tests if this time period overlaps with the given
/// time period.
/// </summary>
public bool OverlapsWith(FrozenPeriod Other)
{
return(Other.StartTime <= this.EndTime && this.StartTime <= Other.EndTime);
}