OpenAPITools / OpenAPITools/openapi-generator

[BUG] `data class` and polymorphism (Kotlin)

Open
#8,060 0 comments 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

Issue: Bug
Dominant language
Java
Stars
26.8k
Forks
7.7k
PR merge metrics
PR metrics pending

Description

I am getting a data class which is implementing another data class, something Kotlin doesn't allow.

It is related to the feature request https://github.com/OpenAPITools/openapi-generator/issues/8059

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Read the linked feature request in issue 8059 first to understand the intended polymorphism behavior. Reproduce the reported Kotlin generation case, then trace the generator behavior that creates a data class implementing another data class. Done means the generated Kotlin code no longer contains invalid data-class inheritance and compiles successfully.

Written by the indexing model from the issue text.

Assessment

Tech stack
kotlin
Domain
tooling
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
30/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.