Cannot deserialize Option[Int] when JodaModule is registered (ClassCastException: org.joda.time.Period)

[lorrin]

I'm having trouble deserializing to a bean that contains an Option[Int]. It seems that when the JodaModule is registered, the deserialization puts a Some[JodaPeriod] in as the value of the Option[Int] (!) which then causes a ClassCastException when I try to access it.

The following exception is thrown by the mapper2.readValue call in the sample code.

Exception in thread "main" java.lang.ClassCastException: org.joda.time.Period cannot be cast to java.lang.Integer
    at scala.runtime.BoxesRunTime.unboxToInt(Unknown Source)
    at JodaTimeTest$.main(JodaTimeTest.scala:15)
    at JodaTimeTest.main(JodaTimeTest.scala)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)

import com.fasterxml.jackson.databind.ObjectMapper
import com.fasterxml.jackson.datatype.joda.JodaModule
import com.fasterxml.jackson.module.scala.{DefaultScalaModule, JacksonModule}

object JodaTimeTest {

  def main(args: Array[String]): Unit = {
    val mapper1 = new ObjectMapper()
    mapper1.registerModule(DefaultScalaModule)
    val int1 =  mapper1.readValue("""{"x":123}""",classOf[OptionalInt]).x.get

    val mapper2 = new ObjectMapper()
    mapper2.registerModule(DefaultScalaModule)
    mapper2.registerModule(new JodaModule())
    val int2 =  mapper2.readValue("""{"x":123}""",classOf[OptionalInt]).x.get
  }
}

case class OptionalInt(x: Option[Int])

[christophercurrie]

Very strange, I'll try and take a look at this issue later this week.

[christophercurrie]

I added a test to try to reproduce this issue, but I'm not able to in my environment. Your file above compiles and runs fine for me, using scala 2.9.1.final on Java 1.6 on MacOS. Can you be more specific about your environment, that might indicate why this is failing for you?

[christophercurrie]

I'm assuming this is no longer an issue, reopen in you're still having issues.