public async Task <TResult> ExecuteAsync <TResult>(Expression expression)
{
var rlinq = RemoteQueryProvider <TSource> .TranslateExpression(expression, _typeInfoProvider, _canBeEvaluatedLocally);
var dataRecords = await _dataProvider(rlinq);
var result = await _resultMapper.MapResultAsync <TResult>(dataRecords, expression);
return(result);
}
public async Task <TResult> ExecuteAsync <TResult>(Expression expression, CancellationToken cancellationToken)
{
var rlinq = RemoteQueryProvider <TSource> .TranslateExpression(expression, _typeInfoProvider, _canBeEvaluatedLocally);
var dataRecords = await _asyncDataProvider(rlinq, cancellationToken).ConfigureAwait(false);
var result = await _resultMapper.MapResultAsync <TResult>(dataRecords, expression, cancellationToken).ConfigureAwait(false);
return(result);
}
public async IAsyncEnumerable <TResult> ExecuteAsyncRemoteStream <TResult>(Expression expression, [EnumeratorCancellation] CancellationToken cancellation)
{
cancellation.ThrowIfCancellationRequested();
var rlinq = RemoteQueryProvider <TSource> .TranslateExpression(expression, _typeInfoProvider, _canBeEvaluatedLocally);
cancellation.ThrowIfCancellationRequested();
var asyncEnumerable = _dataProvider(rlinq, cancellation);
cancellation.ThrowIfCancellationRequested();
await foreach (var resultItem in asyncEnumerable.WithCancellation(cancellation))
{
cancellation.ThrowIfCancellationRequested();
var result = _resultMapper.MapResult <TResult>(resultItem, expression);
yield return(result);
}
}
public TResult Execute <TResult>(Expression expression)
{
var rlinq = RemoteQueryProvider <TSource> .TranslateExpression(expression, _typeInfoProvider, _canBeEvaluatedLocally);
var task = _dataProvider(rlinq);
TResult result;
try
{
var dataRecords = task.Result;
if (object.Equals(default(TSource), dataRecords))
{
result = default(TResult);
}
else
{
var mappingTask = _resultMapper.MapResultAsync <TResult>(dataRecords, expression);
result = mappingTask.Result;
}
}
catch (AggregateException ex)
{
if (ex.InnerExceptions.Count > 0)
{
throw ex.InnerException;
}
else
{
throw;
}
}
return(result);
}
