Dynamic name fields in Json

[Simon Vos]

Hi,

Is there a way to handle dynamic values in the name fields of a Json structure.

For example:

{

    "changes" : {

        "1411998164000" : [{

            "key" : "JIRA-123",

            "column" : {

                "notDone" : true,

                "newStatus" : "10001"

            }

        }],

        "1412171743000" : [{

            "key" : "JIRA-456",

            "column" : {

                "notDone" : true,

                "newStatus" : "10001"

            }

        }],

        "1412873835000" : [{

            "key" : "JIRA-789",

            "timeC" : {

                "oldEstimate" : 0,

                "newEstimate" : 86400,

                "changeDate" : 1412873835000

            },

            "column" : {

                "notDone" : true,

                "newStatus" : "10001"

            }

        }]

    }

}

In this case, I'd like to get some sort of structure for each of these changes, preferably already converting the longs into dates :-).

[Jon Pretty]

Hi Simon,

So, you can quite easily define an extractor for some kind of `Date` type like this:

implicit val ext: Extractor[Date, Json] =
  Json.extractor[Long].map(new Date(_))

To serialize from `Date`s, you do this:

implicit val ser: Serializer[Date, Json] =

  Json.serializer[Long].contramap[Date](_.getTime)

But you don't get any help (at least yet) if you want to convert the keys of the `Map` from `String`s to something else. What you can do is extract as a `Map[String, Whatever]` first, and then map across the `Map`.

But it's an interesting idea, so I've create an issue for it:

   https://github.com/propensive/rapture-json/issues/47

Cheers,

Jon

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