trait TransformPicklers extends AnyRef
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def
transformPickler[A, B](transformFrom: (B) ⇒ A)(transformTo: (A) ⇒ B)(implicit p: Pickler[B]): Pickler[A]
Create a transforming pickler that takes an object of type
Aand transforms it intoB, which is then pickled.Create a transforming pickler that takes an object of type
Aand transforms it intoB, which is then pickled. Similarly aBis unpickled and then transformed back intoA.This allows for easy creation of picklers for (relatively) simple classes. For example
// transform Date into Long and back implicit val datePickler = transformPickler((t: Long) => new java.util.Date(t))(_.getTime)
Note that parameters are in reversed order.
- A
Type of the original object
- B
Type for the object used for pickling
- transformFrom
Function that takes
Band transforms it intoA- transformTo
Function that takes
Aand transforms it intoB
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