// public methods
/// <summary>
/// Deserializes an object from a BsonReader.
/// </summary>
/// <param name="bsonReader">The BsonReader.</param>
/// <param name="nominalType">The nominal type of the object.</param>
/// <param name="actualType">The actual type of the object.</param>
/// <param name="options">The serialization options.</param>
/// <returns>An object.</returns>
public override object Deserialize(
BsonReader bsonReader,
Type nominalType,
Type actualType,
IBsonSerializationOptions options)
{
VerifyTypes(nominalType, actualType, typeof(LazyBsonDocument));
var bsonType = bsonReader.GetCurrentBsonType();
switch (bsonType)
{
case BsonType.Null:
bsonReader.ReadNull();
return null;
case BsonType.Document:
var slice = bsonReader.ReadRawBsonDocument();
return new LazyBsonDocument(slice);
default:
var message = string.Format("Cannot deserialize LazyBsonDocument from BsonType {0}.", bsonType);
throw new FileFormatException(message);
}
}
private RawBsonDocument DeserializeRawBsonDocument(BsonReader bsonReader)
{
var slice = bsonReader.ReadRawBsonDocument();
var nestedDocument = new RawBsonDocument(slice);
_disposableItems.Add(nestedDocument);
return nestedDocument;
}