Discriminator mappings missing breaking generated object inheritance

[joeswiggin]

I have a set of objects that have a shared interface of type "Action." The yaml being produced includes a discriminator property name like it should, but it's missing the mapping. Here's what it looks like (kotlin, sorry):

@JsonTypeInfo(
    use = JsonTypeInfo.Id.NAME,
    include = JsonTypeInfo.As.EXISTING_PROPERTY,
    property = "name",
    visible = true
)
@JsonSubTypes(
    value = [
        Type(name = "type1", value = ActionType1::class),
        Type(name = "type2, value = ActionType2::class),
        ...
    ]
)
interface Action {
  val name: String //this is the discriminator
  ...
}

This produces the following yaml:

    ActionObject:
      type: object
      properties:
        name:
          type: string
        ...
      discriminator:
        propertyName: name

It should also produce a mapping like so:

      discriminator:
        propertyName: name
        mapping:
          type1: '#/components/schemas/ActionType1'
          type2: '#/components/schemas/ActionType2'

Then a code generator will include the mappings on the resulting JsonSubTypes annotation as in the original source.

Hi,

We only rely on swagger official jars (models and annotations).
We mainly use, the names of (parameters / operations) that you can override using swagger annotations (@parameter , @operation, ...)

What you are describing is the behaviour of the swagger-core library and not springdoc-openapi.

You can achieve what your are expting, using @Schema annotations (Here is an example):

• Composition/Inheritance/Polymorphism issues (v2.0.6) swagger-api/swagger-core#3046

If you absolutely need to use JsonSubTypes, you can submit your request to the team here:

• https://github.com/swagger-api/swagger-core

[joeswiggin]

Thanks for the example!

[ajeans]

My thanks as well.

For the record, an open issue on swagger-core with the same request is swagger-api/swagger-core#3411