14.7. Parsing JSON

The JSON converter defines the path to a list of features as well as json-types of each field:

{
  type         = "json"
  id-field     = "$id"
  feature-path = "$.Features[*]"
  fields = [
    { name = "id",     json-type = "integer",  path = "$.id",               transform = "toString($0)" }
    { name = "number", json-type = "integer",  path = "$.number",                                      }
    { name = "color",  json-type = "string",   path = "$.color",            transform = "trim($0)"     }
    { name = "weight", json-type = "double",   path = "$.physical.weight",                             }
    { name = "geom",   json-type = "geometry", path = "$.geometry",                                    }
  ]
}

14.7.1. JSON Geometries

Geometry objects can be represented as either WKT or GeoJSON and parsed with the same config:

Config:

{ name = "geom", json-type = "geometry", path = "$.geometry", transform = "point($0)" }

Data:

{
   DataSource: { name: "myjson" },
   Features: [
     {
       id: 1,
       number: 123,
       color: "red",
       geometry: { "type": "Point", "coordinates": [55, 56] }
     },
     {
       id: 2,
       number: 456,
       color: "blue",
       geometry: "Point (101 102)"
     }
   ]
}

Remember to use the most general Geometry type as your json-type or SimpleFeatureType field type. Defining a type Geometry allows for polygons, points, and linestrings, but specifying a specific geometry like point will only allow for parsing of points.