public async IAsyncEnumerable <Entry> ReadAsync(
FhirStorePageReaderOptions options,
[EnumeratorCancellation] CancellationToken cancellationToken = default)
{
options ??= new FhirStorePageReaderOptions();
var filter = Builders <BsonDocument> .Filter.Empty;
var totalRecords = await _collection.CountDocumentsAsync(filter, cancellationToken : cancellationToken)
.ConfigureAwait(false);
for (var offset = 0; offset < totalRecords; offset += options.PageSize)
{
var data = await _collection.Find(filter)
.Sort(Builders <BsonDocument> .Sort.Ascending(Field.PRIMARYKEY))
.Skip(offset)
.Limit(options.PageSize)
.ToListAsync(cancellationToken: cancellationToken)
.ConfigureAwait(false);
foreach (var envelope in data)
{
yield return(envelope.ToEntry());
}
}
}
public async Task <IPageResult <Entry> > ReadAsync(FhirStorePageReaderOptions options)
{
options = options ?? new FhirStorePageReaderOptions();
var filter = Builders <BsonDocument> .Filter.Empty;
var totalRecords = await _collection.CountDocumentsAsync(filter)
.ConfigureAwait(false);
return(new MongoCollectionPageResult <Entry>(_collection, filter,
options.PageSize, totalRecords,
document => document.ToEntry()));
}
