public static IOrderedFindFluent <TDocument> OrderByDescending <TDocument>(
this IFindFluentSource <TDocument> source,
Expression <Func <TDocument, object> > field)
{
var find = source.ToFindFluent();
return(find.SortByDescending(field));
}
public static IOrderedFindFluent <TDocument> SortBy <TDocument>(
this IFindFluentSource <TDocument> source,
Expression <Func <TDocument, object> > field)
{
var find = source.ToFindFluent();
var sort = Builders <TDocument> .Sort.Ascending(field);
return(find.Sort(sort));
}
public static IFindFluent <TDocument> Where <TDocument>(
this IFindFluentSource <TDocument> source,
Expression <Func <TDocument, bool> > field)
{
var find = source.ToFindFluent();
var fb = Builders <TDocument> .Filter;
find.Filter = fb.And(find.Filter, fb.Where(field));
return(find);
}
public static async Task <TDocument?> FirstOrDefaultAsync <TDocument>(
this IFindFluentSource <TDocument> source,
CancellationToken cancellationToken = default)
{
var find = source.ToFindFluent();
var cursor = await find.Limit(1).ToCursorAsync(cancellationToken);
await cursor.MoveNextAsync(cancellationToken);
return(cursor.Current.FirstOrDefault());
}
public static async Task <List <TDocument> > ToListAsync <TDocument>(
this IFindFluentSource <TDocument> source,
CancellationToken cancellationToken = default)
{
var find = source.ToFindFluent();
var cursor = await find.ToCursorAsync(cancellationToken);
var result = new List <TDocument>();
while (await cursor.MoveNextAsync(cancellationToken))
{
result.AddRange(cursor.Current);
}
return(result);
}
public static async Task <TDocument?> SingleOrDefaultAsync <TDocument>(
this IFindFluentSource <TDocument> source,
CancellationToken cancellationToken = default)
{
var find = source.ToFindFluent();
IAsyncCursor <TDocument> cursor;
if (!find.Options.Limit.HasValue || find.Options.Limit.Value > 2)
{
cursor = await find.Limit(2).ToCursorAsync(cancellationToken);
}
else
{
cursor = await find.ToCursorAsync(cancellationToken);
}
await cursor.MoveNextAsync(cancellationToken);
return(cursor.Current.SingleOrDefault());
}
