如何在Mongo中拆分JSON文档

Question

我有以下格式的文件：

{
"_id" : ObjectId("58af1ee3f78a9945bd9fc94d"),
"rounds" : {
    "matches" : {
        "team1" : {
            "name" : "Manchester United",
            "score1" : 1
        },
        "team2" : {
            "name" : "Tottenham Hotspur",
            "score2" : 0
        }
    }
}}

我想像这样得到这样的感觉：

{
"_id" : ObjectId("SomeID"),
"rounds" : {
    "matches" : {
        "team1" : {
            "name" : "Manchester United",
            "score1" : 1
        }
    }
}

}

和

{
"_id" : ObjectId("SomeID"),
"rounds" : {
    "matches" : {
         "team2" : {
            "name" : "Tottenham Hotspur",
            "score2" : 0
        }
    }
}

}

我正在寻找像展开但放卷的东西只适用于数组。如何将匹配转换为JSON数组？欢迎任何其他想要达到预期结果的想法