net.liftweb.json

TypeHints

trait TypeHints extends AnyRef

Type hints can be used to alter the default conversion rules when converting Scala instances into JSON and vice versa. Type hints must be used when converting class which is not supported by default (for instance when class is not a case class).

Example:

class DateTime(val time: Long)

val hints = new ShortTypeHints(classOf[DateTime] :: Nil) {
  override def serialize: PartialFunction[Any, JObject] = {
    case t: DateTime => JObject(JField("t", JInt(t.time)) :: Nil)
  }

  override def deserialize: PartialFunction[(String, JObject), Any] = {
    case ("DateTime", JObject(JField("t", JInt(t)) :: Nil)) => new DateTime(t.longValue)
  }
}
implicit val formats = DefaultFormats.withHints(hints)

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Abstract Value Members

  1. abstract def classFor(hint: String): Option[Class[_]]

    Return type for given hint.

  2. abstract def hintFor(clazz: Class[_]): String

    Return hint for given type.

  3. abstract val hints: List[Class[_]]

Concrete Value Members

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

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

    Definition Classes
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  3. final def ##(): Int

    Definition Classes
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  4. def +(hints: TypeHints): TypeHints

    Adds the specified type hints to this type hints.

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

    Definition Classes
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  6. final def ==(arg0: Any): Boolean

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  7. final def asInstanceOf[T0]: T0

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  8. def clone(): AnyRef

    Attributes
    protected[lang]
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    @throws()
  9. def components: List[TypeHints]

  10. def containsHint_?(clazz: Class[_]): Boolean

  11. def deserialize: PartialFunction[(String, JObject), Any]

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

    Definition Classes
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  13. def equals(arg0: Any): Boolean

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  14. def finalize(): Unit

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    protected[lang]
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    @throws()
  15. final def getClass(): java.lang.Class[_]

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  16. def hashCode(): Int

    Definition Classes
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  17. final def isInstanceOf[T0]: Boolean

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

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  19. final def notify(): Unit

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  20. final def notifyAll(): Unit

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  21. def serialize: PartialFunction[Any, JObject]

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

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  23. def toString(): String

    Definition Classes
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  24. final def wait(): Unit

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    @throws()
  25. final def wait(arg0: Long, arg1: Int): Unit

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    @throws()
  26. final def wait(arg0: Long): Unit

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