I have a JSON:
[
{
"id": 1015380,
"type": "campaign",
"stats": [
{
"message_sends_by_any_user": 13,
"ctr": "0.094",
}
]
},
{
"id": 1015695,
"type": "campaign",
"stats": [
{
"message_sends_by_any_user": 7,
"ctr": "0.091",
}
]
}
]
I want to "unnested" stats list to top level. JOLT config:
[
{
"operation": "shift",
"spec": {
"*": {
"id": "[&1].id",
"type": "[&1].type",
"stats": {
"*": "[&2].&"
}
}
}
}
]
Expected:
[
{
"id": 1015380,
"type": "campaign",
"message_sends_by_any_user": 13,
"ctr": "0.094",
},
{
"id": 1015695,
"type": "campaign",
"message_sends_by_any_user": 7,
"ctr": "0.091"
}
]
But actual output contains array indexes like this:
[
{
"id" : 1015380,
"type" : "campaign",
"0" : {
"message_sends_by_any_user" : 13,
"ctr" : "0.094"
}, ...
How to avoid these indexes?
You can prefer walking through the indexes of the stats list by taking id and type attributes inside such as
[
{
"operation": "shift",
"spec": {
"*": {
"stats": {
"*": {
"#(2,id)": "[&3].id",
"#(2,type)": "[&3].type",
"*": "[&3].&"
}
}
}
}
}
]
the demo on the site http://jolt-demo.appspot.com is
Related
This is an input that needs to be transformed using Jolt Transformation to obtain the expected output.
I am attempting to create a jolt transformation for the below input:
{
"flights": [
{
"id": "123",
"route": "BJS-SIN"
},
{
"id": "456",
"route": "SIN-PEK"
},
{
"id": "789",
"route": "SIN-BJS"
}
],
"prices": [
{
"id": "abc",
"amount": 560
},
{
"id": "def",
"amount": 780
}
],
"solutions": [
{
"price-ref": "abc",
"flights-ref": [
"123",
"456"
]
},
{
"price-ref": "def",
"flights-ref": [
"123",
"789"
]
}
]
}
Desired output would like :
{
"solutions": [
{
"flights": [
{
"id": "123",
"route": "BJS-SIN"
},
{
"id": "456",
"route": "SIN-PEK"
}
],
"price": {
"id": "abc",
"amount": 560
}
},
{
"flights": [
{
"id": "123",
"route": "BJS-SIN"
},
{
"id": "789",
"route": "SIN-BJS"
}
],
"price": {
"id": "def",
"amount": 780
}
}
]
}
As the output, all the data should be constructed refer to the solutions node. How about the mapping expression in JOLT?
all the values from the source json are generated randomly and the keys names are fixed.
I had tried many times but could not find the right spec, so please help.
You can use this spec:
[
{
"operation": "shift",
"spec": {
"*": "&",
"flights|prices": {
"*": {
"*": "&2.#(1,id).&"
}
}
}
},
{
"operation": "shift",
"spec": {
"solutions": {
"*": {
"flights*": {
"*": {
"*": {
"#(6,flights.&)": "&5[&4].flights[&2]"
}
}
},
"price*": {
"*": {
"#(5,prices.&)": "&4[&3].price"
}
}
}
}
}
}
]
I'm coming to the conclusion that Jolt is beyond me.
With this input data:-
{
"cluster_id": "1",
"data": {
"id": 1,
"types": [
{
"incident_id": 10,
"incident_ref": "AAA",
"incident_code": "123",
"incident_date": "2010-11-15T00:01:00Z"
},
{
"incident_id": 20,
"incident_ref": "BBB",
"incident_code": "456",
"incident_date": "2020-11-15T00:01:00Z"
}
]
}
}
Spec:-
[
{
"operation": "shift",
"spec": {
"cluster_id": "id",
"data": {
"types": {
"*": {
"incident_id": "incidents",
"incident_ref": "incidents"
}
}
}
}
}
]
Gives:-
{
"id" : "1",
"incidents" : [ 10, "AAA", 20, "BBB" ]
}
How would I get the result of:-
{
"id" : "1",
"incidents" : [
{"id": 10, "ref": "AAA", "code": "123", date: "2010-11-15T00:01:00Z"},
{"id": 20, "ref": "BBB", "code": "456", date: "2020-11-15T00:01:00Z"},
]
}
Tried a bunch of permutations but getting nowhere!
You can use this spec:
[
{
"operation": "shift",
"spec": {
"*": "id",
"data": {
"types": {
"*": {
"incident_*": "incidents[&1].&(0,1)"
}
}
}
}
}
]
To prevent using incident text in the spec, you can use the below spec:
[
{
"operation": "shift",
"spec": {
"*": "id",
"data": {
"types": {
"*": {
"*_*": "&(0,1)[&1].&(0,2)"
}
}
}
}
}
]
You can use two level of shift transformations by extracting substring from tag names such as
[
{
"operation": "shift",
"spec": {
"*": "id",
"data": {
"types": {
"*": "incidents"
}
}
}
},
{
"operation": "shift",
"spec": {
"id": "&",
"*": {
"*": {
"*_*": "&2[&1].&(0,2)"
}
}
}
}
]
I am trying to apply Jolt for below data
input:
[
{
"id": "500",
"code": "abc",
"date": "2020-10-10",
"category": 1,
"amount": 100,
"result": 0
},
{
"id": "500",
"code": "abc",
"date": "2020-10-10",
"category": 2,
"amount": 200,
"result": 1
}
]
jolt used:
[
{
"operation": "shift",
"spec": {
"*": {
"id": "#(1,id).id",
"code": "#(1,id).code",
"date": "#(1,id).group1.date",
"category": "#(1,id).group1.group2[&1].category"
}
}
},
{
"operation": "cardinality",
"spec": {
"*": {
"id": "ONE"
}
}
},
{
"operation": "shift",
"spec": {
"*": ""
}
}
]
current output:
{
"id": "500",
"code": [
"abc",
"abc"
],
"group1": {
"date": [
"2020-10-10",
"2020-10-10"
],
"group2": [
{
"category": 1
},
{
"category": 2
}
]
}
}
expected:
{
"id": "500",
"code": "abc",
"group1": {
"date": "2020-10-10",
"group2": [
{
"category": 1
},
{
"category": 2
}
]
}
}
If i keep column of code & date in cardinality, it's fine. But in my use case, there are multiple such columns to be added. Are there any better ways to handle this scenario?
You should add each added node and use "*" wildcard to represent the rest of the attributes within the cardinality transformation such as
{
"operation": "cardinality",
"spec": {
"*": {
"*": "ONE",
"group1": {
"*": "ONE",
"group2": "MANY"
}
}
}
}
where "group2": "MANY" will make group2 to be excepted for extracting only the first element of the respective list.
the demo on the site http://jolt-demo.appspot.com/ :
I want to transform a JSON using JOLT like this:
Input: {
"array": [
"1","2","3","4"
],
"array2": [
{
"something": "123",
"something1": "Plane"
},
{
"something3": "567",
"something4": "Car"
}
]
}
Into the following format, as you can see from output I need data from both arrays to fit exact param names, not empty one like in the first or existed param names like in the second one.
Output: {
"one_array": [
{
"code": "1",
"description": "",
},
{
"code": "2",
"description": "",
},
{
"code": "3",
"description": "",
},
{
"code": "4",
"description": "",
}
], "other_array": [
{
"id": "123",
"type": "Plane"
},
{
"id": "567",
"type": "Car"
}
]
}
Some clarifications are really appreciated
You can achieve this using 2 shift operations and the default operation as below.
[
{
"operation": "shift",
"spec": {
"array": {
"*": {
"#": "one_array[&].id"
}
},
"array2": {
"*": {
"*": {
"#": "tmp_array[&2]"
}
}
}
}
},
{
"operation": "shift",
"spec": {
"one_array": "one_array",
"tmp_array": {
"*": {
"0": "other_array[&1].id",
"1": "other_array[&1].type"
}
}
}
},
{
"operation": "default",
"spec": {
"one_array[]": {
"*": {
"description": ""
}
}
}
}
]
I have json converted from protobuf protocol with following format:
{
"id": "6aa0734f-6d6a-4b95-8a2b-2dde346f9df7",
"measurements": [
{
"ts": "1590331111510000000",
"values": [
{},
{
"name": 1,
"value": -1.8093990087509155
},
{
"name": 2,
"value": 0.35456427931785583
}
],
"parameters": [
"Stat",
"VoltageAnglePhaseB"
]
}
]
}
expected output is:
{
"id" : "6aa0734f-6d6a-4b95-8a2b-2dde346f9df7",
"ts" : "1590331111510000000",
"Stat":-1.8093990087509155,
"VoltageAnglePhaseB":0.35456427931785583
}
I've started my Jolt spec like this:
[
{
"operation": "shift",
"spec": {
"id": "id",
"measurements": {
"*": {
"ts": "ts",
"parameters": {
"*": ""
},
"*": ""
}
}
}
}
]
But facing the problem to extract name and value from the JSON.
Does anyone have an idea?
It can be done with 2 shift operations. First, shift the values to the valuesArr, same way shift the parameters to the parametersArr. Then match the values with the index.
[
{
"operation": "shift",
"spec": {
"id": "id",
"measurements": {
"*": {
"ts": "ts",
"values": {
"*": {
"value": "valuesArr"
}
},
"parameters": "parametersArr"
}
}
}
},
{
"operation": "shift",
"spec": {
"id": "id",
"ts": "ts",
"valuesArr": {
"*": "#(2,parametersArr[&])"
}
}
}
]