我有 2 个相当简单的类（地图和游戏），当我执行这个查询时：
if(gameCollection.Any(g => g.NumPlayers <GameConstants.MAX_PLAYERS_PER_GAME))
我收到错误消息：无法将类 MOMGame.GameObjects.Map 分配给类 MOMGame.GameObjects.Game。确保已知类型派生自映射类。参数名称：类型
知道问题是什么吗？我正在对 Mongo 2.2 使用最新版本的驱动程序 (1.6.0.4624)。
以下是有问题的2类：
[BsonKnownTypes(typeof(MOMGame.GameObjects.Map), typeof(MOMGame.GameObjects.Location), typeof(MOMGame.GameObjects.Game), typeof(MOMGame.GameObjects.UserInfo))]
public class Game
{
[BsonId]
public Guid Id { get; set; }
public Map Map { get; set; }
public string Name { get; set; }
public List<Guid> Players { get; set; }
[BsonRepresentation(BsonType.Int32)]
public int NumPlayers { get; set; }
public Game()
{
Players = new List<Guid>();
//if (!BsonClassMap.IsClassMapRegistered(typeof(Game)))
//{
// BsonClassMap.RegisterClassMap<Game>(cm => cm.AutoMap());
//}
}
public static void SaveGame(Game game)
{
var connectionString = "mongodb://localhost/?safe=true";
var server = MongoServer.Create(connectionString);
var database = server.GetDatabase("mom");
var gameCollection = database.GetCollection<Game>("games");
game.NumPlayers = game.Players.Count;
gameCollection.Save(game);
}
public static Game GetNextGame()
{
var connectionString = "mongodb://localhost/?safe=true";
var server = MongoServer.Create(connectionString);
var database = server.GetDatabase("mom");
var gameCollection = database.GetCollection<Game>("games").AsQueryable();
if(gameCollection.Any(g => g.NumPlayers < GameConstants.MAX_PLAYERS_PER_GAME))
{
return gameCollection.First(g => g.NumPlayers < GameConstants.MAX_PLAYERS_PER_GAME);
}
else
{
return GameCreator.CreateGame();
}
}
}
[BsonKnownTypes(typeof(MOMGame.GameObjects.Map), typeof(MOMGame.GameObjects.Location) , typeof(MOMGame.GameObjects.Game), typeof(MOMGame.GameObjects.UserInfo))]
public class Map
{
public Map()
{
//if (!BsonClassMap.IsClassMapRegistered(typeof(Map)))
//{
// BsonClassMap.RegisterClassMap<Map>(cm => cm.AutoMap());
//}
}
[BsonIgnore]
public ILocation[][] Grid { get; set; }
[BsonId]
public Guid Id { get; set; }
public string Name { get; set; }
[BsonIgnore]
public List<ILocation> Locations
{
get
{
List<ILocation> locs = new List<ILocation>();
for (int i = 0; i < Grid.Length; i++)
{
for (int j = 0; j < Grid[i].Length; j++)
{
locs.Add(Grid[i][j]);
}
}
return locs;
}
}
}