setTopicPattern(pile(config. nfigure(MapperFeature.ACCEPT_CASE_INSENSITIVE_PROPERTIES, true) Initially I used slightly renamed constructor parameter in case class. In Scala 2. This worked for me: import case class MyJsonObj ( (JsonProperty field) ('type') val myType: Int ) This is in addition to mapper.registerModule (DefaultScalaModule), which you'll probably need if you're deserializing into a Scala class. nfigure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false) In my case expected JSON field was named type which is a reserved word in Scala. Mapper.registerModule(new JavaTimeModule) Mapper.registerModule(DefaultScalaModule) Thanks u/plokhotnyuk, I am deserializing from KafkaSource in Flink, I am unable to create a custom object mapper and pass it, it is complaining about Type JsonDeserializationSchema takes type parameters val mapper = new ObjectMapper() with ScalaObjectMapper Non-existing values can be extracted into scala.Option and strings can be automatically converted. Want your library here? Message the moderators! Case classes can be used to extract values from parsed JSON. Open Source Applications written in Scala This is a very common case as JSON libraries typically use reflection to serialize the. Introduction to Programming with Dependent Types in Scala (advanced) If for some reason adding the aforementioned configuration to.Functional Programming Principles in Scala import def factorial (x: Int ): Int tailrec def factorialHelper (x: Int, accumulator: Int ): Int if x 1 then accumulator else factorialHelper (x - 1, accumulator x) factorialHelper (x, 1 ) The factorialHelper method has the tailrec which ensures the method is indeed tail-recursive. To handle this case, the deserializer can be configured with .Functional Programming in Scala (Manning) Assuming you have a Java class that is decorated with Jackson annotations.Scala Center (not-for-profit scala org) I'm looking for reflection-based JSON not requiring field-by-field annotation or assignment and it seemed this could do that, but their documentation includes no examples.Try Scala Online with Scastie or ScalaFiddle.
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