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

importplay.api.libs.json.Jsonimportplay.api.libs.json.Json.{toJson, fromJson}
importuk.gov.voa.valuetype.IntValueimportuk.gov.voa.valuetype.play.formats.ValueTypeFormatcaseclassMyIntValue(value: Int) extendsIntValueimplicitvalmyIntValueFormat=ValueTypeFormat.format(MyIntValue.apply)
toJson(MyIntValue(2))
fromJson(Json.parse("2"))

Play PathBinders

importplay.api.mvc.PathBindableimportuk.gov.voa.valuetype.IntValueimportuk.gov.voa.valuetype.play.binders.ValueTypePathBinder._importscala.util.TrycaseclassMyIntValue(value: Int) extendsIntValueimplicitvalintValueParser: (String) =>Try[MyIntValue] = value =>Try {
MyIntValue(value.toInt)
}
valintValueBinder= 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.