Question

鉴于此样本数据：

[   
    {
      "_id": "5798ae78670bc85f3e3fe0df",
      "defines": [
            {
              "domain": "ism:SecurityLabel",
              "name": "access",
              "@id": "ntk:access"
            },
            {
              "domain": "ntk:AccessProfileType",
              "name": "profileDes",
              "@id": "ntk:profileDes"
            },
            {
              "domain": "ntk:AccessType",
              "name": "requiresAllOf",
              "@id": "ntk:requiresAllOf"
            },

            {
              "domain": "ism:SecurityLabel",
              "name": "bannerMark",
              "@id": "ism:bannerMark"
            },
            {
              "label": "Need-to-Know Access Profile Type",
              "name": "AccessProfileType",
              "@id": "ntk:AccessProfileType"
            },
            {
              "label": "Need-to-Know Access Type"
              "name": "AccessType",
              "@id": "ntk:AccessType"
            }
        ]
    },
    {
        "_id": "5798ae78670bc85f3e3fe0e1",
        "defines": [        
            {
              "domain": "ntk:AccessProfileType",
              "name": "accessPolicy",
              "@id": "ntk:accessPolicy"
            },
            {
              "domain": "ism:SecurityLabel",
              "name": "atomicEnergyMarking",
              "@id": "ism:atomicEnergyMarking"
            },
            {
              "domain": "ism:SecurityLabel",
              "name": "classification",
              "@id": "ism:classification"
            }
        ]
    }
]

我需要查询defines.domain $in ["ism:SecurityLabel", "ntk:AccessProfileType"]所在的集合，并返回一个对象，每个域都有一个匹配定义数组，如下所示：

{   

    "ism:SecurityLabel": [
        {
            "domain": "ism:SecurityLabel",
            "name": "access"
            "@id": "ntk:access"
        },
        {
            "domain": "ism:SecurityLabel",
            "name": "bannerMark"
            "@id": "ism:bannerMark"
        },
        {
            "domain": "ism:SecurityLabel",
            "name": "atomicEnergyMarking",
            "@id": "ism:atomicEnergyMarking"
        },
        {
            "domain": "ism:SecurityLabel",
            "name": "classification",
            "@id": "ism:classification"
        }
    ],
    "ntk:AccessProfileType": [
        {
            "domain": "ntk:AccessProfileType",
            "name": "profileDes"
            "@id": "ntk:profileDes"
        },
        {
            "domain": "ntk:AccessProfileType",
            "name": "accessPolicy"
            "@id": "ntk:accessPolicy"
        }       
    ]
}

我试图匹配然后投影我的结果，但我真的不知道如何将数据从它的格式转换为我需要的格式。

{ 
    $match: {
        'defines.domain': { $in: types } 
    } 
},
{
    $project: {
        defines: {
            $filter: {
                // ??? not sure what to do ???
            }
        }
    }
}

Answer 1

请检查此查询。这不是你所要求的，但我认为更接近。此外，当您发布问题时。请确保您的测试数据良好。你错过了一些逗号。

db.testing.aggregate([ 
    { $match: {'defines.domain': { $in: ["ism:SecurityLabel", "ntk:AccessProfileType"] } } },
    {$unwind:"$defines"},
    {$match:{"defines.domain":{$in:["ism:SecurityLabel", "ntk:AccessProfileType"]}}},
    {$group:{"_id":"$defines.domain",data:{$push:"$defines"}}}
]).pretty()

MongoDB基于值数组聚合和转换数据子集

1 个答案: