DRAFT: Jaxrs-spec: Resolve @JsonTypeName with the mapping key of the discriminator in the child models when OpenAPI specification uses OneOf for polymorphism

[Ignacio-Vidal]

The Jaxrx-spec adds the class name to the @JsonTypeName annotation in child classes when the OpenAPI specification has a OneOf with a discriminator mapping. Instead, the generator should add the mapping key of the discriminator.

This MR updates the POJO mustache template to inject the vendor extension x-discriminator-value to the @JsonTypeName annotation when the discriminator has a mapping or defaults to the original behaviour with the class name when not available.

This MR will fix #10822 and will fix #17343

---

Summary by cubic

Fixes wrong @JsonTypeName in the JAX-RS spec generator for oneOf + discriminator mappings. Child models now use the discriminator mapping key (e.g., CAT); parents keep their names. Fixes #17343, #10822.

• Bug Fixes
  • Set vendorExtensions.x-discriminator-value on child models in postProcessAllModels by matching the parent discriminator.mappedModels.
  • Update pojo.mustache to use that value in @JsonTypeName, falling back to the model name if absent.
  • Add tests and a sample spec (PetRequest/CatRequest/DogRequest) to confirm parents keep names and children use mapping values.

^{Written for commit 763a354. Summary will update on new commits.}

[cubic-dev-ai]

No issues found across 4 files