JOLT concatenate two strings - json

Question

I have this collection of driver details and I want to use jolt to copy the properties to concatenate first name and last name within a single property called name
{
"drivers_details": [
{
"first_name": "Doru",
"last_name": "Petre",
"cnp": "1641201390687",
"id_series": "RK",
"id_number": "123456"
},
{
"first_name": "GIGI",
"last_name": "FANE",
"cnp": "16412013906871",
"id_series": "RK",
"id_number": "1234567"
}
]
}
I am using this spec for the shift transformation spec
[
{
"operation": "shift",
"spec": {
"drivers_details": {
"*": {
"cnp": "body.drivers[&1].tin",
"id_series": "body.drivers[&1].id_series",
"id_number": "body.drivers[&1].id_number"
}
}
}
}
]
and this one for modify-overwrite, but it doesn't work how I was expecting
{
"operation": "modify-overwrite-beta",
"spec": {
"drivers_details": {
"*": {
"name": "=concat(#(2,first_name),' ',#(2,last_name))"
}
}
}
}
What is the correct way of doing this?

Answer 1

You can use modify transformation as in the following case, and get rid of names other than newly formed attribute name such as
[
{
"operation": "modify-overwrite-beta",
"spec": {
"drivers_details": {
"*": {
"name": "=concat(#(1,first_name),' ',#(1,last_name))"
}
}
}
},
{
"operation": "remove",
"spec": {
"drivers_details": {
"*": {
"*name": ""
}
}
}
},
{ // this last spec stands only for ordering of the attributes if the ordering and putting the "name" at the top matters.
// So, you might get rid of the "remove" transformation above if this is used. Otherwise keep it.
"operation": "shift",
"spec": {
"drivers_details": {
"*": {
"name": "&2[&1].&",
"cnp": "&2[&1].&",
"id*": "&2[&1].&"
}
}
}
}
]
where those attributes(first/last_name) stays right-hand-side at the current level, so just only need to traverse 1 colon(:) which appears as #(1,..)

Answer 2

You can use this spec without the remove operation:
[
{
"operation": "modify-overwrite-beta",
"spec": {
"*": {
"*": {
"name": "=concat(#(1,first_&),' ',#(1,last_&))"
}
}
}
},
{
"operation": "shift",
"spec": {
"*": {
"*": {
"name": "&2[&1].&",
"cnp": "&2[&1].&",
"id_*": "&2[&1].&"
}
}
}
}
]