/// <summary>
/// Loads JSON object identified by OID from the collection.
/// </summary>
/// <remarks>
/// Returns <c>null</c> if object is not found.
/// </remarks>
/// <param name="id">Id of an object</param>
public TDocument Load <TDocument>(ObjectId id)
{
using (var bson = new BsonHandle(() => _functions.LoadBson(CollectionHandle, ref id), Database.Library))
{
//document does not exists
if (bson.IsInvalid)
{
return(default(TDocument));
}
using (var stream = Database.Library.ConvertToStream(bson))
using (var reader = new BsonReader(stream))
{
var document = Serializer.Deserialize <TDocument>(reader);
IdHelper <TDocument> .SetId(document, ref id);
return(document);
}
}
}
/// <summary>
/// Returns a result with specified index from results
/// </summary>
public unsafe TDocument this[int index]
{
get
{
EnsureInRange(index);
int size;
var resultPointer = CursorResult(index, out size);
using (var stream = new UnsafeStream(resultPointer))
using (var reader = new BsonReader(stream))
{
//TODO: Try to move this hack to deserialization step
var id = *((ObjectId *)(resultPointer + 9));
TDocument result = Serializer.Deserialize <TDocument>(reader);
IdHelper <TDocument> .SetId(result, ref id);
return(result);
}
}
}
