How to convert generic potentially nested map Map[String, Any] to case class using any library in Scala?

Question

I\'ve not had much joy with reflection, this answer using shapeless works for some cases (but seems to have many edge cases) Shapeless code to convert Map[String, Any] to ca

Answer 1

Using jackson:

libraryDependencies += "com.fasterxml.jackson.core" % "jackson-databind" % "2.9.8"
libraryDependencies += "com.fasterxml.jackson.module" %% "jackson-module-scala" % "2.9.8"

case class Foo(a: List[Int], b: Option[Double])
case class Bar(c: Int, d: String, e: Foo)

val mapper = new ObjectMapper().registerModule(DefaultScalaModule)
println(mapper.convertValue(Map(
  "c" -> 3, 
  "d" -> "foo", 
  "e" -> Map("a" -> List(1, 2))), classOf[Bar]))

Output: Bar(3,foo,Foo(List(1, 2),None))