internal TElement ReturnSingleton <TElement>(Expression expression)
{
IQueryable <TElement> query = new TableQuery <TElement>(expression, this);
MethodCallExpression mce = expression as MethodCallExpression;
SequenceMethod sequenceMethod;
if (ReflectionUtil.TryIdentifySequenceMethod(mce.Method, out sequenceMethod))
{
switch (sequenceMethod)
{
case SequenceMethod.Single:
return(query.AsEnumerable().Single());
case SequenceMethod.SingleOrDefault:
return(query.AsEnumerable().SingleOrDefault());
case SequenceMethod.First:
return(query.AsEnumerable().First());
case SequenceMethod.FirstOrDefault:
return(query.AsEnumerable().FirstOrDefault());
/*
* if !ASTORIA_LIGHT && !WINDOWS_RT
* case SequenceMethod.LongCount:
* case SequenceMethod.Count:
* return (TElement)Convert.ChangeType(((TableQuery<TElement>)query).GetQuerySetCount(this.Context), typeof(TElement), System.Globalization.CultureInfo.InvariantCulture.NumberFormat);
* //#endif
*/
}
}
throw new NotSupportedException(string.Format(CultureInfo.InvariantCulture, SR.ALinqMethodNotSupported, mce.Method.Name));
}
