swagger-api / swagger-api/swagger-codegen

Swagger Code Gen not working for Map response

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Description

Swagger Codegen not working.

Swagger Codegen fails to build ApiClient when response is a Map with some user-defined class and no other api endpoint.

 @GetMapping("/cars")
public Map<String, List<Car>> getCars(){
      // some code
}

To fix this I had to add another api endpoint with


@GetMapping("/car")
public List<Car> getCar(){
      // some code
}

Swagger-codegen version

Swagger Code gen version is 2.3.1

Contributor guide

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First steps

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  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

Reproduce the Swagger Codegen 2.3.1 failure with the shown Map<String, List> response and no other endpoint, then compare it with the added List endpoint case. Trace the generated ApiClient output and confirm that generation succeeds for the Map response without requiring an unrelated endpoint.

Written by the indexing model from the issue text.

Assessment

Tech stack
java, openapi
Domain
devtools
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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