No OpenAPI visible endpoint for endpoint declared in interface with default implementation

Hi,

Thanks for your answer.

I've written a sample project to show the problem.

Here is the repository.

https://github.com/githubjul/test-swagger-with-interfaces

The creation of this test allows me to understand exactly where is the problem, it's a little more tricky than I thought.

First of all, you're absolutely right : there is no problem with default method in interfaces.

My problem is a mix between default method in interface and inheritance.

First interface :

public interface OriginalEndpoint<C> {

    String originalEndpoint(C c);
}

Second interface :

public interface SecondEndpoint<C> extends OriginalEndpoint<C> {

    @GET
    @Path("/{id}")
    @ApiResponses(value = {
            @ApiResponse(responseCode = "200", description = "OK"),
            @ApiResponse(responseCode = "400", description = "Bad Request"),
            @ApiResponse(responseCode = "403", description = "Forbidden"),
            @ApiResponse(responseCode = "404", description = "Not Found")})
    default String secondEnpoint(C param) {
        return "secondEnpoint-ok";
    }

    @Override
    @GET
    @Path("/original/{id}")
    @ApiResponses(value = {
            @ApiResponse(responseCode = "200", description = "OK"),
            @ApiResponse(responseCode = "400", description = "Bad Request"),
            @ApiResponse(responseCode = "403", description = "Forbidden"),
            @ApiResponse(responseCode = "404", description = "Not Found")})
    default String originalEndpoint(C param) {
        return "originalEndpoint-ok";
    }


}

In the swagger generated :

• secondEnpoint ( Get on «/{id}) is present
• originalEndpoint ( Get on  «/original/{id}») is not present

The reason I used this inheritance in interfaces is because I have multiple default implementations for same «base» interfaces. One default implementation for Jersey, and another one for Spring MVC