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

    Definition Classes
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  7. final def asInstanceOf[T0]: T0

    Definition Classes
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  8. def clone(): AnyRef

    Attributes
    protected[java.lang]
    Definition Classes
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    Annotations
    @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

    Definition Classes
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  14. def finalize(): Unit

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

    Definition Classes
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  16. def hashCode(): Int

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

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

    Definition Classes
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  19. final def notify(): Unit

    Definition Classes
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  20. final def notifyAll(): Unit

    Definition Classes
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  21. def serialize: PartialFunction[Any, JObject]

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

    Definition Classes
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  23. def toString(): String

    Definition Classes
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  24. final def wait(): Unit

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

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

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