$push and $sum with the aggregation framework on sub-documents - mongodb

Question

I've a data as follows:
{
"_id" : ObjectId("55d4410544c96d6f6578f893"),
"executionProject" : "Project1",
"suiteList" : [
{
"suiteName": "Suite1",
"suiteStatus" : "PASS",
},
{
"suiteName": "Suite2",
"suiteStatus" : "FAIL",
},
{
"suiteName": "Suite3",
"suiteStatus" : "PASS",
}
],
"runEndTime" : ISODate("2015-08-19T08:40:47.049Z")
}
{
"_id" : ObjectId("55d4410544c96d6f6578f894"),
"executionProject" : "Project1",
"suiteList" : [
{
"suiteName": "Suite1",
"suiteStatus" : "PASS",
},
{
"suiteName": "Suite2",
"suiteStatus" : "FAIL",
},
{
"suiteName": "Suite3",
"suiteStatus" : "FAIL",
}
],
"runEndTime" : ISODate("2015-08-19T08:50:47.049Z")
}
And I was trying to get the result like this:
{
"executionProject": "Project1",
"data": [
{
"date": "2015-08-19 08:40:47",
"suitePass": 2,
"suiteFail": 1
},
{
"date": "2015-08-19 08:50:47",
"suitePass": 1,
"suiteFail": 2
}
]
}
Here I'm trying to group by executionProject and push the runEndTime and the pass and fail counts of suites to the result.
I tried this, but giving me wrong way of projection:
db.testruns.aggregate([
{
$project: {
executionProject: "$executionProject",
runEndTime: "$runEndTime",
suiteList: "$suiteList"
}
},
{
$unwind: "$suiteList"
},
{
$group: {
_id: "$executionProject",
runEndTime: {
$addToSet: "$runEndTime"
},
suite_pass: {
$sum: {
$cond: {
"if": {
$eq: ["$suiteList.suiteStatus", "PASS"]
},
"then": 1,
"else": 0
}
}
}
}
},
{
$group: {
_id: "$_id",
runEndTime: { $push: {runTime: "$runEndTime", suite_pass: "$suite_pass"} }
}
},
{
$project: {
executionProject: "$_id",
runEndTime: "$runEndTime",
_id: 0
}
}
]);

Answer 1

First you need to group by the document to get the suite totals, then you add to the array as you group on the project. Also don't forget to "sort" if you want things in order:
[
{ "$unwind": "$suiteList" },
{ "$group": {
"_id": "$_id",
"executionProject": { "$first": "$executionProject" },
"suite-pass": {
"$sum": {
"$cond": [
{ "$eq": [ "$suiteList.suiteStatus", "PASS" ] },
1,
0
]
}
},
"suite-fail": {
"$sum": {
"$cond": [
{ "$eq": [ "$suiteList.suiteStatus", "FAIL" ] },
1,
0
]
}
},
"date": { "$first": "$runEndTime" }
}},
{ "$sort": { "executionProject": 1, "date": 1 } },
{ "$group": {
"_id": "$executionProject",
"data": {
"$push": {
"suite-pass": "$suite-pass",
"suite-fail": "$suite-fail",
"date": "$date"
}
}
}}
]
Produces:
{
"_id" : "Project1",
"data" : [
{
"suite-pass" : 2,
"suite-fail" : 1,
"date" : ISODate("2015-08-19T08:40:47.049Z")
},
{
"suite-pass" : 1,
"suite-fail" : 2,
"date" : ISODate("2015-08-19T08:50:47.049Z")
}
]
}