com.rojoma.json.util

TagAndValue

case class TagAndValue(typeField: String, valueField: String) extends TagType with Product with Serializable

Specifies that the base codec should wrap the value generated by subclasses' com.rojoma.json.codec.JsonCodecs in another object containing two fields; one for the type-tag and one for the actual value.

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](TagAndValue("type", "value")).
   branch[SubclassA]("a").
   branch[SubclassB]("b").
   build

println(baseCodec.encode(SubclassA("John"))) // { "type" : "a", "value" : { "name" : "John" } }
println(baseCodec.encode(SubclassB(1, 2))) // { "type" : "b", "value" : { "x" : 1, "y" : 2 } }
Linear Supertypes
Serializable, Serializable, Product, Equals, TagType, AnyRef, Any
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Inherited
  1. TagAndValue
  2. Serializable
  3. Serializable
  4. Product
  5. Equals
  6. TagType
  7. AnyRef
  8. Any
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Instance Constructors

  1. new TagAndValue(typeField: String, valueField: String)

Value Members

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

    Definition Classes
    AnyRef

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

    Definition Classes
    Any

  3. final def ##(): Int

    Definition Classes
    AnyRef → Any

  4. final def ==(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

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

    Definition Classes
    Any

  6. final def asInstanceOf[T0]: T0

    Definition Classes
    Any

  7. def clone(): AnyRef

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

    Definition Classes
    AnyRef

  9. def finalize(): Unit

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )

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

    Definition Classes
    AnyRef → Any

  11. final def isInstanceOf[T0]: Boolean

    Definition Classes
    Any

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

    Definition Classes
    AnyRef

  13. final def notify(): Unit

    Definition Classes
    AnyRef

  14. final def notifyAll(): Unit

    Definition Classes
    AnyRef

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

    Definition Classes
    AnyRef

  16. val typeField: String

  17. val valueField: String

  18. final def wait(): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

Inherited from Serializable

Inherited from Serializable

Inherited from Product

Inherited from Equals

Inherited from TagType

Inherited from AnyRef

Inherited from Any

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