CsvMapper does not serialize / de-serialize Scala Option correctly

[mlvn23]

I'm not sure if this is a CsvMapper issue or jackson-scala-module issue. I'm using version 2.9.4 for everything, but I also tried it with 2.7.x. The following code works with the ObjectMapper but not with the CsvMapper:

        case class Record(key: String, value: Option[Double])

        val mapper = new CsvMapper with ScalaObjectMapper
        mapper.registerModule(DefaultScalaModule)

        val cls = classOf[Record]
        val schema = mapper.schemaFor(cls).withHeader
        val writer = mapper.writer(schema)
        val reader = mapper.readerFor(cls).`with`(schema)

        val goodCsv = writer.writeValueAsString(Record("good", Some(10.0)))
        val badCsv = writer.writeValueAsString(Record("bad", None))

        println(goodCsv)
        // key,value
        // good,10.0

        println(badCsv)
        // key,value
        // bad,

        println(reader.readValue[Record](goodCsv)) // Record(good,Some(10.0))
        println(reader.readValue[Record](badCsv))  // Record(bad,Some())  -> it deserialized into Option[String]

        // fails: java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Double
        val d: Double = reader.readValue[Record](badCsv).value.get 

[cowtowncoder]

If it can be reproduced with Java type like AtomicReference, could be CSV module.
Otherwise Scala; and that is in general more likely since at this point Scala module is without owner and not actively maintained.

[mlvn23]

Using AtomicReference with Scala also de-serialized it into an AtomicReference[String] instead of AtomicReference[Double]. I tried it in Java and it correctly de-serialized into AtomicReference[Double]. I'll raise an issue on the Scala module.

[cowtowncoder]

Thank you.