RavenDB：如何創建MapReduce的索引返回兒童的篩選對象列表

Question

繼this question

我有以下的文檔結構：

Game 
- Id 
- Teams 
    - Team 1 
    - list of players 
    - Team 2 
    - list of players 
- Events 
    - Event 1 
    - type: Pass 
    - teamId 
    - PlayerId 
    - Event 2 
    - type: Goal 
    - teamId 
    - PlayerId 

如何建立，讓我所有的事件的索引對於給定遊戲的玩家？

這是我得到多遠，RavenDB說它不能理解我的查詢？

public class Games_PlayerEvents : AbstractIndexCreationTask<Game, Games_PlayerEvents.ReduceResult> 
    { 
     public class ReduceResult 
     { 
      public string PlayerId { get; set; } 
      public IEnumerable<GameEvent> Events { get; set; } 
     } 


     public Games_PlayerEvents() 
     { 
      Map = games => from game in games 
          select new 
          { 
           PlayerId = "", 
           Events = game.Events 
          }; 

      Reduce = results => from result in results 
           from @event in result.Events 
           group @event by @event.PlayerId into playerEvents 
           select new 
           { 
            PlayerId = playerEvents.Key, 
            Events = playerEvents.Select(g => g) 
           }; 


     } 
    } 

Answer 1

Marto，如果你真的想給它這樣的模型，你不需要創建一個索引，你可以加載整個文檔的遊戲，並使用標準的LINQ的待辦事項休息對象聚合。

無論如何，它聽起來好像你想讓遊戲，玩家和事件作爲獨立的文檔，因爲這些是你的聚合根或換句話說 - 它們有自己的意義。