Jsonpath syntax to extract specific parent keys with specific child keys - json

Question

Is it possible to filter json by jsonpath query to get specific keys of parents AND specific keys of childs?
Here is the json:
{
"data": {
"paymentProviders": [
{
"currency": "USD",
"supported": true,
"providers": [
{
"fields": [],
"key": "paypal",
"maintenance": false,
"settings": [
{
"max": 10000,
"min": 100
}
],
"withdrawalFields": []
},
{
"fields": [],
"key": "moneta",
"maintenance": false,
"settings": [
{
"key": "deposits",
"max": 10000,
"min": 100
}
],
"withdrawalFields": []
}
]
},
{
"currency": "GBP",
"supported": true,
"providers": [
{
"fields": [],
"key": "directTransfer",
"maintenance": false,
"settings": [
{
"key": "deposits",
"max": 0,
"min": 100
}
],
"withdrawalFields": []
}
]
},
{
"currency": "EUR",
"supported": true,
"providers": [
{
"fields": [],
"key": "paypal",
"maintenance": false,
"settings": [
{
"key": "deposits",
"max": 10000,
"min": 100
}
],
"withdrawalFields": []
}
]
}
]
}
}
I want to get only 'currency', 'providers.key' and 'providers.maintenance' from it, like this:
{
"data": {
"paymentProviders": [
{
"currency": "USD",
"providers": [
{
"key": "paypal",
"maintenance": false,
},
{
"key": "moneta",
"maintenance": false,
}
]
},
{
"currency": "GBP",
"providers": [
{
"key": "directTransfer",
"maintenance": false,
}
]
},
{
"currency": "EUR",
"providers": [
{
"key": "paypal",
"maintenance": false,
}
]
}
]
}
}
If I use something like
$..['key', 'maintenance']
I'll lose that 'currency' property.
Basically, I want to use 'Union operator' pattern inside another 'Union operator' pattern, idea is this:
$..["currency","providers.['key', 'maintenance']"]

Answer 1

Try
$..['currency','key','maintenance']
You should get
[
"USD",
"paypal",
false,
"moneta",
false,
"deposits",
"GBP",
"directTransfer",
false,
"deposits",
"EUR",
"paypal",
false,
"deposits"
]
Compare with Goessner
Note that the jsonpath union operator will only give you a list of values, without the contextual elements that you have in your desired results.