JSON to JSOn jolt transformation - json

Question

I would like to transform my nested json message and take only required filed using Jolt spec-
My Input JSON :
{
"results": [
{
"user": {
"gender": "male",
"name": {
"title": "mr",
"first": "moritz",
"last": "zimmer"
},
"location": {
"street": "3667 breslauer straße",
"city": "gera",
"state": "mecklenburg-vorpommern",
"zip": 35662
},
"email": "moritz.zimmer#example.com",
"username": "purplegorilla905",
"password": "kkkkk",
"salt": "O5KFiJMB",
"md5": "d5659f39f9102452dca5e9afbfe06f07",
"sha1": "bb8790f5e22a8a4c33f12d623cd7f5c45adba275",
"sha256": "5fc5dd30d75c323404474e2c5bec2372a145f363742162b36a6414aa10e2b5e6",
"registered": 968202500,
"dob": 68248460,
"phone": "0450-7475136",
"cell": "0179-3008357",
"picture": {
"large": "https://randomuser.me/api/portraits/men/15.jpg",
"medium": "https://randomuser.me/api/portraits/med/men/15.jpg",
"thumbnail": "https://randomuser.me/api/portraits/thumb/men/15.jpg"
}
}
},
{
"user": {
"gender": "female",
"name": {
"title": "ms",
"first": "julia",
"last": "bayer"
},
"location": {
"street": "5913 burgstraße",
"city": "mühldorf a. inn",
"state": "bremen",
"zip": 17247
},
"email": "julia.bayer#example.com",
"username": "bluedog987",
"password": "sheba1",
"salt": "qJ3KuIu7",
"md5": "c29e59c439ebc41b6772344b53863a17",
"sha1": "7fdb58f22eb85cb89ffb0c2cbb13bbf3bbb37238",
"sha256": "d6114912b8476e1c825a3487feb1cc7319c0c26f29f583ccd6864fa4f11214db",
"registered": 1224249359,
"dob": 1307176045,
"phone": "0846-0635929",
"cell": "0172-0881456",
"picture": {
"large": "https://randomuser.me/api/portraits/women/15.jpg",
"medium": "https://randomuser.me/api/portraits/med/women/15.jpg",
"thumbnail": "https://randomuser.me/api/portraits/thumb/women/15.jpg"
}
}
},
{
"user": {
"gender": "male",
"name": {
"title": "mr",
"first": "sascha",
"last": "vogel"
},
"location": {
"street": "8276 lerchenweg",
"city": "straubing",
"state": "niedersachsen",
"zip": 73954
},
"email": "sascha.vogel#example.com",
"username": "purplefrog135",
"password": "picard",
"salt": "kBv4gmHR",
"md5": "79a388de1832ab7f14f4e5ddf0d88012",
"sha1": "8fc12f95217bf04eaf7e950154485dd35b84c65e",
"sha256": "a5df2bfd3ee84a869c43f92fe28ce5f56f7700bc75ce2e12bbee7cad2524af82",
"registered": 950549849,
"dob": 310749405,
"phone": "0098-5667969",
"cell": "0179-8473990",
"picture": {
"large": "https://randomuser.me/api/portraits/men/83.jpg",
"medium": "https://randomuser.me/api/portraits/med/men/83.jpg",
"thumbnail": "https://randomuser.me/api/portraits/thumb/men/83.jpg"
}
}
},
{
"user": {
"gender": "female",
"name": {
"title": "mrs",
"first": "luisa",
"last": "döring"
},
"location": {
"street": "9027 am bahnhof",
"city": "salzgitter",
"state": "bayern",
"zip": 12419
},
"email": "luisa.döring#example.com",
"username": "purpleelephant855",
"password": "californ",
"salt": "gsnCNl8c",
"md5": "905d16801137f3368277889a783c02f3",
"sha1": "a5027752e9228bbc1e99fa56a6f2d09a1901e7e2",
"sha256": "51b7e09a415fef7e71eb3aec2721e91d0b51c2e264a7cdd41f3a692777771de3",
"registered": 1068886905,
"dob": 733574914,
"phone": "0648-0740938",
"cell": "0172-1199322",
"picture": {
"large": "https://randomuser.me/api/portraits/women/65.jpg",
"medium": "https://randomuser.me/api/portraits/med/women/65.jpg",
"thumbnail": "https://randomuser.me/api/portraits/thumb/women/65.jpg"
}
}
}
],
"nationality": "DE",
"seed": "23e269027e0ea51404",
"version": "0.8"
}
Expected output :
[
{
"Gender": "male",
"FirstName": "moritz",
"LastName": "zimmer",
"City": "gera",
"State": "mecklenburg-vorpommern",
"Email": "moritz.zimmer#example.com",
"DateOfBirth": 68248460,
"MobileNo": "0179-3008357",
"Nationality": "DE"
},
{
"Gender": "female",
"FirstName": "julia",
"LastName": "bayer",
"City": "mühldorf a. inn",
"State": "bremen",
"Email": "julia.bayer#example.com",
"DateOfBirth": 1307176045,
"MobileNo": "0172-0881456",
"Nationality": "DE"
},
{
"Gender": "male",
"FirstName": "sascha",
"LastName": "vogel",
"City": "straubing",
"State": "niedersachsen",
"Email": "sascha.vogel#example.com",
"DateOfBirth": 310749405,
"MobileNo": "0179-8473990",
"Nationality": "DE"
},
{
"Gender": "female",
"FirstName": "luisa",
"LastName": "döring",
"City": "salzgitter",
"State": "bayern",
"Email": "luisa.döring#example.com",
"DateOfBirth": 733574914,
"MobileNo": "0172-1199322",
"Nationality": "DE"
}
]
I am using below Spec and output not coming as per expectation -
My Spec :
[
{
"operation": "shift",
"spec": {
"results": {
"*": {
"user": {
"gender": "[&2].Gender",
"name": {
"first": "[&3].FirstName",
"last": "[&3].LastName"
},
"location": {
"city": "[&3].City",
"state": "[&3].State"
},
"email": "[&2].Email",
"dob": "[&2].DateOfBirth",
"cell": "[&2].MobileNo"
}
}
}
}
}
]
Below my Spec output which is not as expected -
[
{
"Gender": "male",
"FirstName": "moritz",
"LastName": "zimmer",
"City": "gera",
"State": "mecklenburg-vorpommern",
"Email": "moritz.zimmer#example.com",
"DateOfBirth": 68248460,
"MobileNo": "0179-3008357"
},
{
"Gender": "female",
"FirstName": "julia",
"LastName": "bayer",
"City": "mühldorf a. inn",
"State": "bremen",
"Email": "julia.bayer#example.com",
"DateOfBirth": 1307176045,
"MobileNo": "0172-0881456"
},
{
"Gender": "male",
"FirstName": "sascha",
"LastName": "vogel",
"City": "straubing",
"State": "niedersachsen",
"Email": "sascha.vogel#example.com",
"DateOfBirth": 310749405,
"MobileNo": "0179-8473990"
},
{
"Gender": "female",
"FirstName": "luisa",
"LastName": "döring",
"City": "salzgitter",
"State": "bayern",
"Email": "luisa.döring#example.com",
"DateOfBirth": 733574914,
"MobileNo": "0172-1199322"
}
]
I tried many option but nationality is not coming inside as my expected output.
Please help here in Jolt transformation

Answer 1

Tip : Looking at outer part of the results array by using "*": "&" while looking at the inner part of that, and combining them under name key which seems to be unique as a grouping by criteria for the desired result set such as
[
{
"operation": "shift",
"spec": {
"results": {
"*": {
"user": {
"*": "&"
}
}
},
"*": "&"
}
},
{
"operation": "shift",
"spec": {
"name": {
"*": {
"#(2,gender[&])": "[&].Gender",
"#(0,first)": "[&1].First&2",
"#(0,last)": "[&1].Last&2",
"#(2,location[&].city)": "[&].City",
"#(2,location[&].state)": "[&].State",
"#(2,email[&])": "[&].Email",
"#(2,dob[&])": "[&].DateOfBirth",
"#(2,phone[&])": "[&].MobileNo",
"#(2,nationality)": "[&].Nationality"
}
}
}
}
]