com.rojoma.json.util

NoTag

sealed abstract class NoTag extends AnyRef

Specifies that the base codec should not affect the subclasses' com.rojoma.json.codec.JsonCodecs at all and that the decoder should simply try each codec in turn, in the order they were provided to the builder, until it finds one that succeeds.

Example: 

  1. abstract class Base
case class SubclassA(name: String) extends Base
case class SubclassB(x: Int, y: Int) extends Base

implicit val aCodec = SimpleJsonCodecBuilder[SubclassA].build("name", _.name)
implicit val bCodec = SimpleJsonCodecBuilder[SubclassB].build("x", _.x, "y", _.y)

val baseCodec = SimpleHierarchyCodecBuilder[Base](NoTag).
   branch[SubclassA].
   branch[SubclassB].
   build

println(baseCodec.encode(SubclassA("John"))) // { "name" : "John" }
println(baseCodec.encode(SubclassB(1, 2))) // { "x" : 1, "y" : 2 }
See also

com.rojoma.json.util.TagType

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  1. new NoTag()

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  1. final def !=(arg0: AnyRef): Boolean

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  2. final def !=(arg0: Any): Boolean

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  3. final def ##(): Int

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  7. def clone(): AnyRef

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  8. final def eq(arg0: AnyRef): Boolean

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  10. def finalize(): Unit

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  11. final def getClass(): Class[_]

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  12. def hashCode(): Int

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  13. final def isInstanceOf[T0]: Boolean

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  14. final def ne(arg0: AnyRef): Boolean

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  15. final def notify(): Unit

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  16. final def notifyAll(): Unit

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  17. final def synchronized[T0](arg0: ⇒ T0): T0

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  18. def toString(): String

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  19. final def wait(): Unit

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  20. final def wait(arg0: Long, arg1: Int): Unit

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