gistfile1.scala

//////////////// Scalaz Validation

sealed trait Name extends NewType[String]
object Name {
  def apply(s: String): Validation[String, Name] = if (s.headOption.exists(_.isUpper))
	(new Name {val value = s}).success
  else
	"Name must start with a capital letter".fail
}

sealed trait Age extends NewType[Int]
object Age {
  def apply(a: Int): Validation[String, Age] = if (0 to 130 contains a)
	(new Age {val value = a}).success
  else
	"Age must be in range".fail
}

case class Person(name: Name, age: Age)

//////////////// JEE 6 Bean Validation

case class Person(@NotNull @Pattern(regexp="[A-Z]\\w+") name: String, @Min(0) @Max(130) age: Int)