根據(jù)App Engine 文檔中的祖先查詢，我可以執(zhí)行以下操作：type Team struct {    Name string}type Player struct {    Name string}// Save data first just for the test caseteamA := datastore.NewIncompleteKey(c, "Team", nil)teamA, _ = datastore.Put(c, teamA, Team{"Team A"})playerA := datastore.NewIncompleteKey(c, "Player", teamA)playerA, _ = datastore.Put(c, playerA, Player{"Player A"})playerB := datastore.NewIncompleteKey(c, "Player", teamA)playerB , _ = datastore.Put(c, playerB, Player{"Player B"})// query dataq := datastore.NewQuery("Team").Filter("Name=", "Team A").Limit(1).KeysOnly()teams, _ := q.GetAll(c, nil)q = datastore.NewQuery("Player").Ancestor(teams[0])var players []Playerq.GetAll(c, &players)但是......如果我想讓 Team 包含一個指向玩家切片的指針，那么我會將它保存為 nil，當(dāng)我查詢它時，我會分配它，有點像這樣：type Team struct {    Name string    Players *[]Player `datastore:-`}type Player {    Name string}// Save data first just for the test caseteamA := datastore.NewIncompleteKey(c, "Team", nil)teamA, _ = datastore.Put(c, teamA, Team{"Team A", nil})/* Saving player data goes here */// query dataq := datastore.NewQuery("Team").Filter("Name=", "Team A").Limit(1)var teams []TeamteamKeys, _ := q.GetAll(c, teams)q = datastore.NewQuery("Player").Ancestor(teamKeys[0])q.GetAll(c, teams[0].Players)這是模擬關(guān)系的好方法嗎？對于我的應(yīng)用程序，樹狀結(jié)構(gòu)將是完美適合我手指的戒指?；蛘摺氵€有什么建議嗎？