Packages

  • package root
    Definition Classes
    root
  • package little
    Definition Classes
    root
  • package json
    Definition Classes
    little
  • package rpc

    Defines API for JSON-RPC 2.0.

    Defines API for JSON-RPC 2.0.

    import little.json.{ Json, JsonOutput }
import little.json.Implicits._
import little.json.rpc._

case class Problem(values: Int*)
case class Answer(value: Int)

// Used when creating "params" in request
implicit val problemOutput: JsonOutput[Problem] = {
  problem => Json.toJson(problem.values)
}

// Used when creating "result" in response
implicit val answerOutput: JsonOutput[Answer] = {
  answer => Json.obj("answer" -> answer.value)
}

val request = JsonRpcRequest(
  version = "2.0",
  id = "590d24ae-500a-486c-8d73-8035e78529bd",
  method = "sum",
  params = Problem(1, 2, 3) // Uses problemOutput
)

val response = JsonRpcResponse(
  version = request.version,
  id = request.id,
  result = request.method match {
    case "sum" =>
      // Sets result
      request.params
        .map(_.as[Array[Int]])
        .map(_.sum)
        .map(Answer(_))
        .map(JsonRpcResult(_)) // Uses answerOutput
        .get
    case name =>
      // Or sets error
      JsonRpcResult(MethodNotFound(name))
  }
)
  • ArrayBuilderCompanion
  • ArrayContextWriter
  • BuilderCompanion
  • ContextWriter
  • Implicits
  • Json
  • JsonAdapter
  • JsonInput
  • JsonOutput
  • ObjectBuilderCompanion
  • ObjectContextWriter
p

little

json

package json

Ordering
  1. Alphabetic
Visibility
  1. Public
  2. All

Type Members

  1. trait ArrayBuilderCompanion[T] extends AnyRef

    Adds value to JsonArrayBuilder.

    Adds value to JsonArrayBuilder.

    See also

    ObjectBuilderCompanion

  2. trait ArrayContextWriter[T] extends AnyRef

    Writes value in array context to JsonGenerator.

    Writes value in array context to JsonGenerator.

    See also

    ObjectContextWriter

  3. trait BuilderCompanion[T] extends ArrayBuilderCompanion[T] with ObjectBuilderCompanion[T]

    Adds value to builder.

  4. trait ContextWriter[T] extends ArrayContextWriter[T] with ObjectContextWriter[T]

    Writes value to JsonGenerator.

  5. trait JsonAdapter[T] extends JsonInput[T] with JsonOutput[T]

    Consolidates JsonInput and JsonOutput.

    Consolidates JsonInput and JsonOutput.

    import javax.json.{ JsonObject, JsonValue }
import little.json.{ Json, JsonAdapter }
import little.json.Implicits._

case class User(id: Int, name: String)

implicit object UserAdapter extends JsonAdapter[User] {
  // Define how to read User from JsonValue
  def reading(json: JsonValue): User =
    json.asInstanceOf[JsonObject] match {
      case obj => User(obj.getInt("id"), obj.getString("name"))
    }

  // Define how to write User to JsonValue
  def writing(user: User): JsonValue =
    Json.obj("id" -> user.id, "name" -> user.name)
}

// Write User to JsonValue
val json = Json.toJson(User(0, "root"))

// Read User from JsonValue
val user = json.as[User]
  6. trait JsonInput[T] extends AnyRef

    Reads value of type T from JsonValue.

    Reads value of type T from JsonValue.

    import javax.json.JsonObject
import little.json.{ Json, JsonInput }
import little.json.Implicits.JsonValueType

case class User(id: Int, name: String)

// Define how to read User from JsonValue
implicit val userInput: JsonInput[User] = {
  case json: JsonObject => User(json.getInt("id"), json.getString("name"))
  case json => throw new IllegalArgumentException("JsonObject required")
}

// Parse String to JsonValue
val json = Json.parse("""{ "id": 0, "name": "root" }""")

// Read User from JsonValue
val user = json.as[User]
    See also

    JsonOutput, JsonAdapter

  7. trait JsonOutput[T] extends BuilderCompanion[T] with ContextWriter[T]

    Writes value of type T to JsonValue.

    Writes value of type T to JsonValue.

    import little.json.{ Json, JsonOutput }
import little.json.Implicits._

case class User(id: Int, name: String)

// Define how to write User to JsonValue
implicit val userOutput: JsonOutput[User] = { user =>
  Json.obj("id" -> user.id, "name" -> user.name)
}

// Write User to JsonValue
val json = Json.toJson(User(0, "root"))
    See also

    JsonInput, JsonAdapter

  8. trait ObjectBuilderCompanion[T] extends AnyRef

    Adds value to JsonObjectBuilder.

    Adds value to JsonObjectBuilder.

    See also

    ArrayBuilderCompanion

  9. trait ObjectContextWriter[T] extends AnyRef

    Writes value in object context to JsonGenerator.

    Writes value in object context to JsonGenerator.

    See also

    ArrayContextWriter

Value Members

  1. object Implicits

    Provides type classes for javax.json and implicit implementations of JsonOutput and JsonInput.

  2. object Json

    Provides factory methods and other utilities.

    Provides factory methods and other utilities.

    import javax.json.JsonObject
import little.json.{ Json, JsonInput, JsonOutput }
import little.json.Implicits._

case class User(id: Int, name: String)

// Define how to read User from JsonValue
implicit val userJsonInput: JsonInput[User] = {
  case json: JsonObject => User(json.getInt("id"), json.getString("name"))
  case json => throw new IllegalArgumentException("JsonObject required")
}

// Define how to write User to JsonValue
implicit val userJsonOutput: JsonOutput[User] = { user =>
  Json.obj("id" -> user.id, "name" -> user.name)
}

// Parse String to JsonValue
val json = Json.parse("""{ "id": 0, "name": "root" }""")

// Read User from JsonValue
val user = json.as[User]

// Write User to JsonValue
val jsonToo = Json.toJson(user)

Ungrouped