我应该选择mongo聚合还是应该在应用程序级服务

Question

我有以下收藏品。

  

公司：

{
"_id" : ObjectId("5a7848e8ca70273218e9d743"),
"name" : "Google",
"departments" : [ 
    {
        "name" : "IT",
        "_id" : "1234567890"
    }, 
    {
        "name" : "Sales",
        "_id" : "1234567891"
    }
]
}

  

用户：

{
    "_id" : ObjectId("5a784977ca70273218e9d759"),
    "name" : "Sankarshan",
    "company" : ObjectId("5a7848e8ca70273218e9d743"),
    "department" : "1234567890"
}

  

topicCategories

{
"_id" : ObjectId("5a784a10ca70273218e9d76f"),
"name" : "topicCtegoryOne",
"order" : 1
}

  

主题

{
"_id" : ObjectId("5a784cc3ca70273218e9d7d3"),
"topicCategory" : ObjectId("5a784a10ca70273218e9d76f"),
"name" : "TopicOne",
"order" : 1,
"label" : "oneTopic",
"color" : "red"
}

  

dimentions

{
"_id" : ObjectId("5a784fdcca70273218e9d869"),
"name" : "dimentionOne"
}

  

查询

{
"_id" : ObjectId("5a78519aca70273218e9d8d7"),
"topic" : ObjectId("5a784cc3ca70273218e9d7d3"),
"dimention" : ObjectId("5a784fdcca70273218e9d869"),
"order" : 1,
"label" : "queryLabelOne",
"statement" : "This is one question - Top1"
}

  

USER_RESPONSES

{
"_id" : ObjectId("5a7859f5ca70273218e9da7d"),
"user" : ObjectId("5a784977ca70273218e9d759"),
"company" : ObjectId("5a7848e8ca70273218e9d743"),
"department" : "1234567890",
"response" : {
    "question" : ObjectId("5a78519aca70273218e9d8d7"),
    "topic" : ObjectId("5a784cc3ca70273218e9d7d3"),
    "topicCategory" : ObjectId("5a784a10ca70273218e9d76f"),
    "dimention" : ObjectId("5a784fdcca70273218e9d869"),
    "rating" : 5,
    "color" : "red"
}
}

  

上面发生了什么

1. 每个用户都属于公司。
2. 每个主题都属于主题类别。
3. 每个查询属于主题
4. 每个查询都有一个维度。
5. 用户可以在评分方面回答查询。
6. 用户对每个问题的回复将存储在User_responses中。

  

我想要实现的目标

基于主题类别和维度

的回复汇总结果

  

预期的汇总结果格式

1. 查询基于一个主题类别。
2. 每个主题的所有问题都是根据主题
汇总的
3. 每个主题都会根据维度计算平均评分。

  

响应

{
"topicCategory": "topic category",
"topics": [
    {
        "topicLabel": "label of the topic one",
        "dimentions": [
            {
                "name": "dimention name one",
                "avgValue": 5.6
            }
            {
                "name": "dimention name two",
                "avgValue": 4.5
            }
        ]
    },
    {
        "topicLabel": "label of the topic two",
        "dimentions": [
            {
                "name": "dimention name one",
                "avgValue": 6.6
            }
            {
                "name": "dimention name two",
                "avgValue": 9.5
            }
        ]
    }

]   
}

我可以使用Mongo聚合实现此功能，还是应该在服务级别执行此操作？

  

我尝试过做什么

db.getCollection('collResp').aggregate([
{
    $match: 
    { 
        company: ObjectId("5a7848e8ca70273218e9d743"),
        department: "1234567890"
    }
},
{
    $group: {
        _id: {
            topic: "$response.topic",
            category: "$response.topicCategory"
        },
        responses: {
            $push: "$response"
        }
    }
},
{
    $lookup: {
        from: 'topics',
        localField: '_id.topic',
        foreignField: '_id',
        as: "topic"
    }
},
{
    $unwind: {
        path: "$topic"
    }
},
{
    $lookup: {
        from: 'topicCategories',
        localField: '_id.category',
        foreignField: '_id',
        as: "category"
    }
},
{
    $unwind: {
        path: "$category"
    }
}
])

  

我得到了什么

/* 1 */
{
"_id" : {
    "topic" : ObjectId("5a78512cca70273218e9d8bd"),
    "category" : ObjectId("5a784a10ca70273218e9d76f")
},
"responses" : [ 
    {
        "question" : ObjectId("5a7851a6ca70273218e9d8d9"),
        "topic" : ObjectId("5a78512cca70273218e9d8bd"),
        "topicCategory" : ObjectId("5a784a10ca70273218e9d76f"),
        "dimention" : ObjectId("5a784fdcca70273218e9d869"),
        "rating" : 8,
        "color" : "red"
    }, 
    {
        "question" : ObjectId("5a78580eca70273218e9da10"),
        "topic" : ObjectId("5a78512cca70273218e9d8bd"),
        "topicCategory" : ObjectId("5a784a10ca70273218e9d76f"),
        "dimention" : ObjectId("5a7851d5ca70273218e9d8ee"),
        "rating" : 7,
        "color" : "red"
    }
],
"topic" : {
    "_id" : ObjectId("5a78512cca70273218e9d8bd"),
    "topicCategory" : ObjectId("5a784a10ca70273218e9d76f"),
    "name" : "TopicTwo",
    "order" : 2,
    "label" : "twoTopic",
    "color" : "green"
},
"category" : {
    "_id" : ObjectId("5a784a10ca70273218e9d76f"),
    "name" : "topicCtegoryOne",
    "order" : 1
}
}

/* 2 */
{
"_id" : {
    "topic" : ObjectId("5a784cc3ca70273218e9d7d3"),
    "category" : ObjectId("5a784a10ca70273218e9d76f")
},
"responses" : [ 
    {
        "question" : ObjectId("5a78519aca70273218e9d8d7"),
        "topic" : ObjectId("5a784cc3ca70273218e9d7d3"),
        "topicCategory" : ObjectId("5a784a10ca70273218e9d76f"),
        "dimention" : ObjectId("5a784fdcca70273218e9d869"),
        "rating" : 5,
        "color" : "red"
    }, 
    {
        "question" : ObjectId("5a785807ca70273218e9da0e"),
        "topic" : ObjectId("5a784cc3ca70273218e9d7d3"),
        "topicCategory" : ObjectId("5a784a10ca70273218e9d76f"),
        "dimention" : ObjectId("5a7851d5ca70273218e9d8ee"),
        "rating" : 3,
        "color" : "red"
    }
],
"topic" : {
    "_id" : ObjectId("5a784cc3ca70273218e9d7d3"),
    "topicCategory" : ObjectId("5a784a10ca70273218e9d76f"),
    "name" : "TopicOne",
    "order" : 1,
    "label" : "oneTopic",
    "color" : "red"
},
"category" : {
    "_id" : ObjectId("5a784a10ca70273218e9d76f"),
    "name" : "topicCtegoryOne",
    "order" : 1
}
}

  

还需要更多

• 每个回复都有一个问题。每个问题都有一个维度
• 我需要根据维度获得平均评分。

谢谢。