I want to write a jolt transform that places the value of coordinates into a single array "coordinates" if the type is Polygon, and into properties "x", "y", "z" if the type is Point. I think I am close with my current spec, but am not sure beyond trying different values after the &.
Input Json1
{
"features": [
{
"geometry": {
"type": "Polygon",
"coordinates": [
[
[
11.1,
111.1
],
[
22.2,
222.2
],
[
33.3,
333.3
]
]
]
}
}
]
}
Input Json2
{
"features": [
{
"geometry": {
"type": "Point",
"coordinates": [
1.1,
2.2,
3.3
]
}
}
]
}
Spec
[
{
"operation": "shift",
"spec": {
"features": {
"*": {
"geometry": {
"type": {
"Polygon": {
"coordinates": {
"*": "[&4].coordinates"
}
},
"Point": {
"coordinates": {
"0": "[&4].x",
"1": "[&4].y",
"2": "[&4].z"
}
}
}
}
}
}
}
}
]
Expected output: Point
[ {
"x" : 1.1,
"y" : 2.2,
"z" : 3.3
} ]
Expected output: Polygon
[ {
"coordinates" : [ [ 11.1, 111.1 ], [ 22.2, 222.2 ], [ 33.3, 333.3 ] ]
} ]
I tried the above spec, and am expecting to get the output showing either an object of coordinates or x,y,z. I am able to get it to work each case individually when I replace [&4] with [&3] and remove the conditional casing, but with it, I know there are some intricacies with levels that I am not handling correctly.
You need to reference back to the value of the coordinates after the type key value which is 2 level up @(2,coordinates) :
[
{
"operation": "shift",
"spec": {
"features": {
"*": {
"geometry": {
"type": {// level 2 where coordinates is located
"Polygon": {
"@(2,coordinates)": {
"*": "[&5].coordinates"
}
},
"Point": { //level 1
"@(2,coordinates)": { // level 0
"0": "[&5].x",
"1": "[&5].y",
"2": "[&5].z"
}
}
}
}
}
}
}
}
]