public override async Task InitializeAsync(CancellationToken cancellationToken = default)
{
var body = await _deserializer.DeserializeAsync <QueryResultData>(ResponseStream, cancellationToken);
MetaData = new QueryMetaData
{
RequestId = body.requestID.ToString(),
ClientContextId = body.clientContextID,
Signature = body.signature,
Profile = body.profile,
Metrics = body.metrics?.ToMetrics()
};
if (Enum.TryParse(body.status, true, out QueryStatus status))
{
MetaData.Status = status;
Success = status == QueryStatus.Success;
}
PreparedPlanName = body.prepared;
if (body.warnings != null)
{
MetaData.Warnings.AddRange(body.warnings.Select(p => p.ToWarning()));
}
if (body.errors != null)
{
Errors.AddRange(body.errors.Select(p => p.ToError()));
}
_rows = body.results ?? Enumerable.Empty <T>();
}
internal async Task ReadResponseAttributes(CancellationToken cancellationToken)
{
if (_reader == null)
{
// Should not be possible
throw new InvalidOperationException("_reader is null");
}
if (MetaData == null)
{
MetaData = new QueryMetaData();
}
_hasReadToResult = false;
while (true)
{
cancellationToken.ThrowIfCancellationRequested();
var path = await _reader !.ReadToNextAttributeAsync(cancellationToken).ConfigureAwait(false);
if (path == null)
{
// Reached the end
break;
}
switch (path)
{
case "requestID" when _reader.ValueType == typeof(string):
MetaData.RequestId = _reader.Value?.ToString();
break;
case "status" when _reader.ValueType == typeof(string):
if (Enum.TryParse(_reader.Value?.ToString(), true, out QueryStatus status))
{
MetaData.Status = status;
Success = status == QueryStatus.Success;
}
break;
case "clientContextID" when _reader.ValueType == typeof(string):
MetaData.ClientContextId = _reader.Value?.ToString();
break;
case "signature":
MetaData.Signature = (await _reader.ReadTokenAsync(cancellationToken).ConfigureAwait(false))
.ToDynamic();
break;
case "prepared" when _reader.ValueType == typeof(string):
PreparedPlanName = _reader.Value?.ToString();;
break;
case "profile":
MetaData.Profile = (await _reader.ReadTokenAsync(cancellationToken).ConfigureAwait(false))
.ToDynamic();
break;
case "metrics":
MetaData.Metrics =
(await _reader.ReadObjectAsync <MetricsData>(cancellationToken).ConfigureAwait(false))
.ToMetrics();
break;
case "results":
// We've reached the result rows, return now
_hasReadToResult = true;
return;
case "warnings":
await foreach (var warning in _reader.ReadObjectsAsync <QueryWarning>(cancellationToken)
.ConfigureAwait(false))
{
MetaData.Warnings.Add(warning);
}
break;
case "errors":
await foreach (var error in _reader.ReadObjectsAsync <Error>(cancellationToken)
.ConfigureAwait(false))
{
Errors.Add(error);
}
break;
}
}
// We've reached the end of the object, mark that entire read is complete
_hasFinishedReading = true;
}
internal async Task ReadResponseAttributes(CancellationToken cancellationToken)
{
if (_reader == null)
{
// Should not be possible
throw new InvalidOperationException("_reader is null");
}
if (MetaData == null)
{
MetaData = new QueryMetaData();
}
_resultEnumerator = null;
while (true)
{
cancellationToken.ThrowIfCancellationRequested();
var path = await _reader !.ReadToNextAttributeAsync(cancellationToken).ConfigureAwait(false);
if (path == null)
{
// Reached the end
break;
}
switch (path)
{
case "requestID" when _reader.ValueType == typeof(string):
MetaData.RequestId = _reader.Value?.ToString();
break;
case "status" when _reader.ValueType == typeof(string):
if (Enum.TryParse(_reader.Value?.ToString(), true, out QueryStatus status))
{
MetaData.Status = status;
Success = status == QueryStatus.Success;
}
break;
case "clientContextID" when _reader.ValueType == typeof(string):
MetaData.ClientContextId = _reader.Value?.ToString();
break;
case "signature":
MetaData.Signature = (await _reader.ReadTokenAsync(cancellationToken).ConfigureAwait(false))
.ToDynamic();
break;
case "prepared" when _reader.ValueType == typeof(string):
PreparedPlanName = _reader.Value?.ToString();;
break;
case "profile":
MetaData.Profile = (await _reader.ReadTokenAsync(cancellationToken).ConfigureAwait(false))
.ToDynamic();
break;
case "metrics":
MetaData.Metrics =
(await _reader.ReadObjectAsync <MetricsData>(cancellationToken).ConfigureAwait(false))
.ToMetrics();
break;
case "results":
if (this.Success)
{
_resultEnumerator = _reader.ReadObjectsAsync <T>(cancellationToken).GetAsyncEnumerator(cancellationToken);
if (await _resultEnumerator.MoveNextAsync().ConfigureAwait(false))
{
// We've reached the result rows, and there is at least one item in the results, return now
return;
}
// Result set was empty, cleanup
await _resultEnumerator.DisposeAsync().ConfigureAwait(false);
_resultEnumerator = null;
}
// In non-success situations or when the result set is empty, we want to populate all the error and warning fields.
break;
case "warnings":
await foreach (var warning in _reader.ReadObjectsAsync <QueryWarning>(cancellationToken)
.ConfigureAwait(false))
{
MetaData.Warnings.Add(warning);
}
break;
case "errors":
await foreach (var error in _reader.ReadObjectsAsync <Error>(cancellationToken)
.ConfigureAwait(false))
{
Errors.Add(error);
}
break;
}
}
// We've reached the end of the object, mark that entire read is complete
_hasFinishedReading = true;
}
