CODEWITHSUNDEEP
javajsonscalaserializationjackson
user1498953
user1498953

Reputation: 45

Scala equivalent code for Jackson's @JSONView

How could I write the Scala equivalent code for the below Java snippet that uses @JSONView. I'm using Scala and Jackson's JSON. I have a requirement were in certain fields need to be dynamically included or excluded based on certain condition - during serialization. Based on Jackson's wiki, @JSONView seems to be a good option - but I have not been successful in getting the scala equivalent.

public class Employee {

public static class All { }
public static class View1 extends All { }
public static class View2 extends View1 { }
public static class View3 extends All { }

@JsonView(All.class)
public Long empid;

@JsonView(View1.class)
public String name;

@JsonView({View2.class, View3.class})
public String addr;

}

Upvotes: 2

Views: 354

Answers (1)

Christopher Currie
Christopher Currie

Reputation: 3065

The direct Scala equivalent would look something like this:

object Employee
{
  class All
  class View1 extends All
  class View2 extends View1
  class View3 extends All
}

class Employee
{
  import Employee._

  @JsonView(Array(classOf[All]))
  var empid: Long = _

  @JsonView(Array(classOf[View1]))
  var name: String = _

  @JsonView(Array(classOf[View2], classOf[View3]))
  var addr: String = _
}

This conversion doesn't take advantage of any Scala-specific Jackson support; it should work as-is with or without the Jackson Scala module installed.

Upvotes: 3

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