Scala macro annotations generating spray-json JsonFormats for case classes.
Add this to your build.sbt (for Scala 2.10 & 2.11):
resolvers += "bleibinha.us/archiva releases" at "http://bleibinha.us/archiva/repository/releases"
libraryDependencies ++= Seq(
"us.bleibinha" %% "spray-json-annotation" % "0.4"
)
addCompilerPlugin("org.scalamacros" % "paradise" % "2.0.1" cross CrossVersion.full)Use it in code:
import spray.json._
import spray.json.DefaultJsonProtocol._
import us.bleibinha.spray.json.macros._
@jsonstrict
case class User(name: String, password: String)This will be generated by the compiler:
@jsonstrict
case class User(name: String, password: String)
object User {
implicit val jsonAnnotationFormat: RootJsonFormat[User] = jsonFormat2(User.apply)
}@json can be used if the case class has only one field and you don't want to generate a full-blown json object. For more usage examples see the test implementation: JsonFormatAnnotationTest.scala
Code base from kifi/json-annotation which provides json annotations for play-json. More information on their blog: http://eng.kifi.com/scala-macro-annotations-real-world-example/
This implements the same annotiations but with spray/spray-json as the underlying Scala json library.