JSON ``` { "data": [ { "id": "x1_1", ...

# serialization

[turansky]

JSON

{
  "data": [
    {
      "id": "x1_1",
      "type": "x1"
    },
    {
      "id": "x2_1",
      "type": "x2",
      "children": [
        {
          "id": "y1_1",
          "type": "y1"
        },
        {
          "id": "y2_1",
          "type": "y2",
          "connectedItems": [
            "x1_1"
          ]
        }      
    }
  ]
}

Data classes

interface X {
  val id: String
}

interface Y {
  val id: String
}

data class D1(data: Array<X>)

data class X1(id): X
data class X2(id, children: Array<Y>): X

data class Y1(id): Y
data class Y2(id, connectedItems): Y

If there any possibility to realize deserialization for this case (according type field)?

[sandwwraith]

Not really for now, such format is not supported yet

[turansky]

Is there any plans to support such format?

[turansky]

Is there any possibility to realize such logic via custom serializers/deserializers?

[sandwwraith]

Yes, there are such plans, but no ETA for it yet. I think it is possible, using intermediate representation via JSON tree: https://github.com/Kotlin/kotlinx.serialization/blob/master/runtime/jvm/src/test/kotlin/kotlinx/serialization/formats/json/JsonTreeAndMapperTest.kt#L35

[sandwwraith]

This is probably a problem which https://github.com/Kotlin/kotlinx.serialization/pull/254 is trying to solve

[turansky]

Do you have a plan to solve this problem in next release?

[sandwwraith]

yes

[turansky]

Is there any aproximate date?

[sandwwraith]

I think it would be around 1.3.20
Possibly eap library releases will follow Kotlin eap's

[turansky]

Coming soon?

[turansky]

Is custom deserializer best solution for 1.3.20 + 0.10.0?

[sandwwraith]

Yes

[turansky]

Will by type deserialization (like in Jackson) be available later?

[sandwwraith]

Yes, we have it in the roadmap

[turansky]

Is there any example of custom by type deserialization?

[turansky]

https://github.com/turansky/kotlinx-serialization-test/blob/master/src/main/kotlin/Serialization.kt

[turansky]

My example doesn't work as expected

[turansky]

Any ideas?

[sandwwraith]

I haven't looked precisely at your code, but maybe this sample https://github.com/kotlin/kotlinx.serialization/blob/master/runtime/common/src/test/kotlin/kotlinx/serialization/json/JsonTreeAndMapperTest.kt could help

[turansky]

Nonstrict mode required 🙂

[turansky]

Deserialization works