internal static Task <TResult> ExecuteSingleAsync <TResult>(
IDbAsyncEnumerable <TResult> query,
Expression queryRoot,
CancellationToken cancellationToken)
{
return(ObjectQueryProvider.GetAsyncElementFunction <TResult>(queryRoot)(query, cancellationToken));
}
public void ExecuteSingleAsync_throws_OperationCanceledException_if_task_is_cancelled()
{
Assert.Throws <OperationCanceledException>(
() => ObjectQueryProvider.ExecuteSingleAsync <object>(
new Mock <IDbAsyncEnumerable <object> >().Object,
new Mock <Expression>().Object,
new CancellationToken(canceled: true)).GetAwaiter().GetResult());
}
Task <TResult> IDbAsyncQueryProvider.ExecuteAsync <TResult>(
Expression expression,
CancellationToken cancellationToken)
{
Check.NotNull <Expression>(expression, nameof(expression));
cancellationToken.ThrowIfCancellationRequested();
return(ObjectQueryProvider.ExecuteSingleAsync <TResult>((IDbAsyncEnumerable <TResult>) this.CreateQuery <TResult>(expression), expression, cancellationToken));
}
Task <object> IDbAsyncQueryProvider.ExecuteAsync(
Expression expression,
CancellationToken cancellationToken)
{
Check.NotNull <Expression>(expression, nameof(expression));
cancellationToken.ThrowIfCancellationRequested();
return(ObjectQueryProvider.ExecuteSingleAsync <object>(IDbAsyncEnumerableExtensions.Cast <object>(this.CreateQuery(expression, expression.Type)), expression, cancellationToken));
}
object IQueryProvider.Execute(Expression expression)
{
Check.NotNull <Expression>(expression, nameof(expression));
return(ObjectQueryProvider.ExecuteSingle <object>(Enumerable.Cast <object>(this.CreateQuery(expression, expression.Type)), expression));
}
TResult IQueryProvider.Execute <TResult>(Expression expression)
{
Check.NotNull <Expression>(expression, nameof(expression));
return(ObjectQueryProvider.ExecuteSingle <TResult>((IEnumerable <TResult>) this.CreateQuery <TResult>(expression), expression));
}
internal static TResult ExecuteSingle <TResult>(IEnumerable <TResult> query, Expression queryRoot)
{
return(ObjectQueryProvider.GetElementFunction <TResult>(queryRoot)(query));
}
