public async Task<Uri> StoreSample(DataSample sample)
{
sample.Recalculate();
var header = new DataSampleItem()
{
Key = sample.Key,
Created = sample.Created,
Modified = sample.Modified,
Label = sample.Label,
SourceDataUrl = sample.SourceDataUrl,
Description = sample.Description,
StartDate = sample.StartDate,
EndDate = sample.EndDate
};
await _db.TransactAsync(async () =>
{
var summaryId = await _db.InsertAsync(sample.Summary);
header.SummaryId = summaryId.Value;
var sampleId = await _db.InsertAsync(header);
if (sample.SampleData.Any())
{
var dataBlobs = sample.SampleData.Select(s => DataItemBlob.Create(s, sampleId.Value));
var count = await _db.InsertManyAsync(dataBlobs);
}
if (sample.Metadata != null && sample.Metadata.Fields.Any())
{
var flds = sample.Metadata.Fields.Select(f => new SampleFieldMetadata()
{
DataType = f.DataType,
FieldUsage = f.FieldUsage,
Index = f.Index,
Label = f.Label,
Name = f.Name,
SampleId = sampleId.Value,
DataModel = f.DataModel
});
var count = await _db.InsertManyAsync(flds);
}
});
sample.Id = header.Id;
sample.Summary.Id = header.SummaryId;
return header.Uri;
}
private DataSample SetupData()
{
var sample = new DataSample()
{
Created = DateTime.UtcNow,
Description = "desc",
Label = "label",
Modified = DateTime.UtcNow,
SampleData = Enumerable.Range(1, 10).Select(n => new DataItem() { FeatureVector = Functions.RandomVector(4).ToArray(), Label = n.ToString() }).ToList()
};
sample.Metadata.Fields.Add(new FieldDescriptor()
{
FieldUsage = FieldUsageType.Category,
DataType = TypeCode.Boolean,
Label = "Fieldx",
Name = "FieldX"
});
return sample;
}
