valuetype
A scala micro-library introducing Value Type (tiny type) trait and some subtraits for simple types like String, Int, Boolean and BigDecimal. It also contains tooling for creating Play JSON format and PathBinders for derived types.
Play JSON format
import play.api.libs.json.Json
import play.api.libs.json.Json.{toJson, fromJson}
import uk.gov.voa.valuetype.IntValue
import uk.gov.voa.valuetype.play.formats.ValueTypeFormat
case class MyIntValue(value: Int) extends IntValue
implicit val myIntValueFormat = ValueTypeFormat.format(MyIntValue.apply)
toJson(MyIntValue(2))
fromJson(Json.parse("2"))Play PathBinders
import play.api.mvc.PathBindable
import uk.gov.voa.valuetype.IntValue
import uk.gov.voa.valuetype.play.binders.ValueTypePathBinder._
import scala.util.Try
case class MyIntValue(value: Int) extends IntValue
implicit val intValueParser: (String) => Try[MyIntValue] = value => Try {
MyIntValue(value.toInt)
}
val intValueBinder = implicitly[PathBindable[MyIntValue]]
intValueBinder.bind("key", "1")
intValueBinder.unbind("key", MyIntValue(1))Installing
Include the following dependency in your SBT build
resolvers += Resolver.bintrayRepo("hmrc", "releases")
libraryDependencies += "uk.gov.hmrc" %% "valuetype" % "<INSERT VERSION>"License
This code is open source software licensed under the Apache 2.0 License.
