Allow setting the title, version and servers through configuration

[royteeuwen]

I'm trying to expand the generation of API specs to multiple files, but this does not work correctly. When generating one API spec, you can use the to specify the server urls. But if you would go to multiple API files based on the tag, where you typically want another title + version per file, you would have to redefine the server urls as well every time, because it overrides the entire freeFields of the generic configuration.

To mitigate this, I think it would be nice to have the title, version and servers as minimum to be able to configure as separate configuration fields, instead of using the freeFields

[royteeuwen]

@kbuntrock I have created an initial PR, could you review and see if you agree :)?

[kbuntrock]

Hello @royteeuwen.

I'm scared that this solution will not "scale" well. In the future, someone can come with the same request for another field.

What do you think about a configuration to merge the json in the freeField section instead of a global replacement?

[royteeuwen]

I think the title, version and servers is a real global use case, but merging is the second best alternative for me 😄 better than the current situation

[kbuntrock]

I have pushed some code allowing a merge between the common and specific api configuration.
Could you try if it fits your needs?

An example of the configuration can be found in an integration test :

• the pom : https://github.com/kbuntrock/openapi-maven-plugin/pull/113/files#diff-9d61bb28842582307fde3f0a0640838bd124ea9da9dcc97a30536a52afe5903f
• the merged file : https://github.com/kbuntrock/openapi-maven-plugin/pull/113/files#diff-62a0ae4ad2c3aa207a460a95709dfd4a1ba345706560d9813c48d57e91fba50a

[royteeuwen]

Looks good to me! can you create a release?

[kbuntrock]

Perfect :)

I will release when all on-going bugs and enhancement PRs are merged. In term of planning, it should be mid-february.

[kbuntrock]

Done, will be shipped on 0.0.18