Class/Object

com.rojoma.json.v3.util

NoTag

Related Docs: object NoTag | package util

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sealed abstract class NoTag extends AnyRef

Specifies that the base codec should not affect the subclasses' com.rojoma.json.v3.codec.JsonEncodes and com.rojoma.json.v3.codec.JsonDecodes 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.v3.util.TagType

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

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  2. final def ##(): Int

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  3. final def ==(arg0: Any): Boolean

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  4. final def asInstanceOf[T0]: T0

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  5. def clone(): AnyRef

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  8. def finalize(): Unit

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

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  10. def hashCode(): Int

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  11. final def isInstanceOf[T0]: Boolean

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

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  13. final def notify(): Unit

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  14. final def notifyAll(): Unit

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

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  16. def toString(): String

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  17. final def wait(): Unit

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

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  19. final def wait(arg0: Long): Unit

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