@dave08 this is what I’m doing :

object JsonObjectUtils{
     inline operator fun JsonObject.set(key: String, value: Any): Unit {
        this.put(key,value)
    }
    inline operator fun <T> JsonObject.get(key: String): T {
        return this.getValue(key) as T
    }
    fun  JsonObject.getFlow(): JsonObject {
        return this.getJsonObject("flow")
    }
    fun  JsonObject.getFlowNodeId(): String {
        return this.getFlow().get("nodeId")
    }
    fun  JsonObject.setFlowNodeId(nodeId:String) {
        this.getFlow().put("nodeId",nodeId)
    }
    fun  JsonObject.getFlowName(): String {
        return this.getFlow().get("name")
    }
    fun  JsonObject.setFlowName(nodeId:String) {
        this.getFlow().put("name",nodeId)
    }
}

@fstn How does this simplify your eventbus code?

instead of doing

message.body().getJsonObject("flow").getValue("nodeId")

I can use

message.body().getFlowNodeId()

@fstn Personally, I use the JsonObject itself to provide the parameters for my services that are in the Business Logic Layer of my app. The code retreiving and setting values to/from the bus should only be in one place, and then be delegated to other layers of the app using data classes or function parameters. If you only use this Utils class in one place it might be a waste to maintain it, you might be better off converting incoming messages to data classes to be used in other layers of the app. I hope I understand you properly... 😉

mmm I’m not sure to understand, sorry 😞 my body can be :

{ 
    “user” : 
    {   
        “firstName” : “MyFirstName”
    }
    “flow”:
    {
        “id”:“myId”,
        “name”:“myName”
    }
}

No, it depends on what input your logic needs. You need to convert it in a form you can easily process

so How do you do a class this a dynamic part?

Whereas if you box it into a data class, it'll give you an error as to exactly what is missing from what the logic is expecting

so the solution can Be to have class User (val firstName:String,val lastName:String,val dynamicPart:JsonObject{

Try to rethink if you really need the dynamic and if it needs processing by your code - if it is just passed along you could even keep it as a json string...

It’s really dynamic, the dynamic part is save inside a jsonB column

But does it need processing?

yes because it’s for a workflow, user can modify the json inside the workflow

User using the UI, but does your code touch it or just save as is in the db? and retrieve for the user to see

thanks @dave08 💪