jq for Scala
Library used :
- Identity:
. - Object Identifier-Index:
.foo,.foo.bar - Optional Object Identifier-Index:
.foo? - Generic Object Index:
.[<string>] - Array Index:
.[2] - Array/String Slice:
.[10:15] - Array/Object Value Iterator:
.[] - Comma:
, - Pipe:
| - Array Construction:
[] - Object Construction:
{} - Recursive Descent:
.. - Evaluated expression with parentheses:
()
import play.api.libs.json.{ Json, JsValue }
import com.scalajq.JQ
val json: JsValue = Json.parse(s"""
|{
| "name": "Star Wars",
| "place": "in a galaxy far far away",
| "author": {
| "firstName": "George",
| "lastName": "Lucas",
| "born": {
| "place": "California",
| "year": 1944
| }
| },
| "characters": [
| {
| "name": "Yoda",
| "appearance": 1980,
| "species": null,
| "gender": "male"
| },
| {
| "name": "Rey",
| "appearance": 2015,
| "species": "Human",
| "gender": "female",
| "weapons": [
| {
| "name": "Quarterstaff"
| },
| {
| "name": "Lightsaber"
| },
| {
| "name": "Blaster"
| }
| ]
| }
| ]
|}
""".stripMargin)
JQ(json, ".characters[1].weapons[2].name") // return JsString("Blaster")
JQ(json, ".characters[1].weapons[].name") // return Json.arr("Quarterstaff", "Lightsaber", "Blaster")
JQ(json, ".characters[0:2] | .name") // return Json.arr("Yoda", "Rey")
JQ(json, ".name, .author.lastName, .author.born.year, .place") // return Json.arr("Star Wars", "Lucas", 1944, "in a galaxy far far away")
JQ(json, "{name: .name, director: .author.lastName}") // return Json.obj("name" -> "Star Wars", "director" -> "Lucas")
JQ(json, "{film: .name, infos: [.place, .author.lastName]}") // return Json.obj("film" -> "Star Wars","infos" -> Json.arr("in a galaxy far far away","Lucas"))}
JQ(json, "{(.author.firstName): .author.lastName}") // return Json.obj("George" -> "Lucas")