com.avsystem.commons.serialization
whenAbsent
Related Docs:
object whenAbsent
| package serialization
com.avsystem.commons.serialization
An alternative way to provide default value for case class parameter used during deserialization with
GenCodecwhen its field is missing in data being deserialized. Normally, Scala-level default parameter values are picked up, but you may want to use this annotation instead if you don't want to pollute your Scala classes with unintended default parameter values (i.e. you want a default value *only* for deserialization).If a parameter has both Scala-level default value and is annotated with
@whenAbsentthen value from annotation takes priority. You can use this to have different source-level default value and different default value for deserialization. You can also leverage this to "remove" default value for deserialization:NOTE: whenAbsent also works for method parameters in RPC framework.