【发布时间】：2018-02-24 18:53:38
【问题描述】：
我在每个级别的每个文档中都有多个嵌套数组。我必须获取符合以下条件的文档：
1. empId : 123
2. address.country: "AUS"
3. group.primaryGroup.primary:"Y"
4. group.subGroup.primarySubGroup.primary : "Y"
5. group.subGroup.primarySubGroup.country : "AUS"
6. In group[0], if primaryGroup.primary = "Y" is not matching then ignore the group[0].
7. In group[0], if subGroup.primarySubGroup.primary = "Y" and subGroup.primarySubGroup.country = "AUS" is not matching then also ignore the entire group[0].
8. If primaryGroup and primarySubGroup matching the criteria then I have to fetch the particular group , primaryGroup and primarySubGroup array.
9. If none of the group[].primaryGroup[] is matching the criteria then I can ignore the entire document.
10. If none of the group[].subGroup[].subPrimaryGroup[] is matching the criteria then I can ignore the entire document.
我无法应用上面提到的标准“第 7 点”。
下面给出我尝试过的查询：
db.temp.aggregate([{"$match": {"empId": 123,"address.country": "AUS","group.primaryGroup.primary": "Y","group.subGroup.primarySubGroup.primary": "Y","group.subGroup.primarySubGroup.country": "AUS"}}, {"$project": {"empId": 1,"mobile": 1,"address": {"$filter": {"input": "$address","as": "d","cond": {"$eq": ["$$d.country", "AUS"]}}},"group": {"$map": {"input": {"$filter": {"input": "$group","as": "b","cond": {"$in": ["Y", "$$b.primaryGroup.primary"]}}}, "as": "vp","in": {"groupId": "$$vp.groupId","primaryGroup": {"$filter": {"input": "$$vp.primaryGroup","as": "vp","cond": {"$eq": ["$$vp.primary", "Y"]}}},"subGroup": {"$map": {"input": {"$filter": {"input": "$$vp.subGroup","as": "np","cond": {"$and": [{"$in": ["Y", "$$np.primarySubGroup.primary"]}, {"$in": ["AUS", "$$np.primarySubGroup.country"]}]}}},"as": "n","in": {"subGroupId": "$$n.subGroupId","primarySubGroup": {"$filter": {"input": "$$n.primarySubGroup","as": "n","cond": {"$and": [{"$eq": ["$$n.primary", "Y"]}, {"$eq": ["$$n.country", "AUS"]}]}}}}}}}}}}}]).pretty()
我参考了网址 (MongoDB nested array search using $map)
输入：
[
{
"empId": 123,
"address": [
{
"street": "no.12 wilson street",
"country":"AUS"
},
{
"description": "No.32 watson street",
"country":"CAN"
}
],
"mobile": 2387468238,
"group": [
{
"groupId": 75227,
"primaryGroup": [
{
"primary": "Y"
},
{
"primary": "N"
}
],
"subGroup": [
{
"subGroupId": 123,
"primarySubGroup": [
{
"primary": "Y",
"country": "AUS"
},
{
"primary": "N",
"country": "IND"
}
]
},
{
"subGroupId": 234,
"primarySubGroup": [
{
"primary": "N",
"country": "USA"
},
{
"primary": "Y",
"country": "IND"
}
]
},
{
"subGroupId": 432,
"primarySubGroup": [
{
"primary": "Y",
"country": "AUS"
},
{
"primary": "N",
"country": "CAN"
}
]
}
]
}, {
"groupId": 33333,
"primaryGroup": [
{
"primary": "Y"
},
{
"primary": "N"
}
],
"subGroup": [
{
"subGroupId": 6734,
"primarySubGroup": [
{
"primary": "Y",
"country": "CAN"
},
{
"primary": "N",
"country": "IND"
}
]
},
{
"subGroupId": 9864,
"primarySubGroup": [
{
"primary": "N",
"country": "IND"
},
{
"primary": "Y",
"country": "USA"
}
]
}
]
}, {
"groupId": 44444,
"primaryGroup": [
{
"primary": "N"
},
{
"primary": "N"
}
],
"subGroup": [
{
"subGroupId": 6734,
"primarySubGroup": [
{
"primary": "Y",
"country": "AUS"
},
{
"primary": "N",
"country": "IND"
}
]
},
{
"subGroupId": 9864,
"primarySubGroup": [
{
"primary": "N",
"country": "IND"
},
{
"primary": "Y",
"country": "USA"
}
]
}
]
}
]
}
]
输出：
[
{
"empId": 123,
"address": [
{
"street": "no.12 wilson street",
"country":"AUS"
}
],
"mobile": 2387468238,
"group": [
{
"groupId": 75227,
"primaryGroup": [
{
"primary": "Y"
}
],
"subGroup": [
{
"subGroupId": 123,
"primarySubGroup": [
{
"primary": "Y",
"country": "AUS"
}
]
},
{
"subGroupId": 432,
"primarySubGroup": [
{
"primary": "Y",
"country": "AUS"
}
]
}
]
}
]
}
]
你能帮我解决这个问题吗？提前致谢。
【问题讨论】：
标签： mongodb mongodb-query aggregation-framework spring-data-mongodb