private void ApplySorting(MongoCursor <BsonDocument> cursor, IEnumerable <SimpleOrderByItem> orderings)
{
if (orderings == null || !orderings.Any())
{
return;
}
var sortBuilder = new SortByBuilder();
foreach (var ordering in orderings)
{
var name = ExpressionFormatter.GetFullName(ordering.Reference);
if (ordering.Direction == OrderByDirection.Ascending)
{
sortBuilder.Ascending(name);
}
else
{
sortBuilder.Descending(name);
}
}
cursor.SetSortOrder(sortBuilder);
}
public IEnumerable <IDictionary <string, object> > Find(MongoCollection <BsonDocument> collection, SimpleQuery query, out IEnumerable <SimpleQueryClauseBase> unhandledClauses)
{
var builder = MongoQueryBuilder.BuildFrom(query);
unhandledClauses = builder.UnprocessedClauses;
if (builder.IsTotalCountQuery)
{
long count;
if (builder.Criteria == null)
{
count = collection.Count();
}
else
{
count = collection.Count(_expressionFormatter.Format(builder.Criteria));
}
//TODO: figure out how to make count a long
builder.SetTotalCount((int)count);
}
if (!builder.SkipCount.HasValue && builder.TakeCount.HasValue && builder.TakeCount.Value == 1)
{
return new[] { FindOne(collection, builder.Criteria) }
}
;
var cursor = CreateCursor(collection, builder.Criteria);
ApplyFields(cursor, builder.Columns);
ApplySorting(cursor, builder.Order);
ApplySkip(cursor, builder.SkipCount);
ApplyTake(cursor, builder.TakeCount);
var aliases = builder.Columns.OfType <ObjectReference>().ToDictionary(x => ExpressionFormatter.GetFullName(x), x => x.GetAlias());
return(cursor.Select(x => x.ToSimpleDictionary(aliases)));
}