How to transform complex json structure using Groovy? - json

Question

first of all, thanks for your time!
So i've been using Groovy for a couple of weeks now but i can't seems to be able to transform the following json structure:
{
"collection_1": [
[
"value_1",
"value_2",
"value_3"
],
[
"value_1",
"value_2",
"value_3",
"value_4"
]
],
"collection_2": [
[
"value_1",
"value_2",
"value_3",
"value_4",
"value_5"
]
],
"collection_3": [
[
"value_1",
"value_2"
]
]
}
To something like:
{
"collection_1": [
[
"value_1": false,
"value_2": false,
"value_3": false
],
[
"value_1": false,
"value_2": false,
...
Here is how i did it:
Map<String, Object> getSelectableItems(Map<String, Object> jsonDeserialized) {
def selectableItems = [:]
jsonDeserialized.each { collection, subCollection ->
selectableItems.put(collection, [:])
subCollection.eachWithIndex { items, index ->
selectableItems.get(collection).putAt(index, items.collect { value ->
[
"${value}" : false
]
})
}
}
return selectableItems
}
​
I've been trying for days, it isn't that hard, i even succeed but the final code is looking terribly wrong.
Do you have any idea of how I could achieve something like so with the power of Groovy?
Thanks groovy pros :D

Answer 1

import groovy.json.*
def data = new JsonSlurper().parseText('''
{...your json here...}
''')
data.replaceAll { k, v -> v = v.collect { it.collectEntries { [it,false] } } }
println new JsonBuilder(data).toPrettyString()
output:
{
"collection_1": [
{
"value_1": false,
"value_2": false,
"value_3": false
},
{
"value_1": false,
"value_2": false,
"value_3": false,
"value_4": false
}
],
"collection_2": [
{
"value_1": false,
"value_2": false,
"value_3": false,
"value_4": false,
"value_5": false
}
],
"collection_3": [
{
"value_1": false,
"value_2": false
}
]
}