Union fix

[Kaiser1989]

Although i added some union implementations before, there were still bugs with union handling.

• Multiple inline unions of same type in one object
• Inheritance of inline unions
• Arrays in Unions

Following a raml example with all upper problems in one:

one:
  type: object
  properties:
    mem1: string | nil
    mem2: string | nil

second:
  type: one
  properties:
    mem3: number[] | string[] | nil

This Pull Request fixes all of these bugs. But there are some breaking changes:

• Changed naming of Unions from Type1Type2Union to FieldnameUnion (BREAKING CHANGE)
• Changed default type of Arrays from java.util.List to Type[ ] (BREAKING CHANGE)
• Added Array implementation to Unions (e.g. number[] | string[] | nil)
  • Changed Plugin "core.asArray" to "core.asList" (to retain original behaviour)
  • Unions with Lists are not working, as we are losing Type Parameters due to java's type erasure and Jackson does not know if we have a list of numbers or a list of strings.
• Check object members of type union to be inherited, do not create union class if already exists in parent, but use parent's union as type
• Fixed enum naming to be UPPER_UNDERSCORE (BREAKING CHANGE)
• Adjusted results of unions in all tests
• Added some missing dependency (Eclipse projekt error)

I don't know, if this project is still alive, but we needed these features and I implemented them for us. As we gain lots of profit from this project, I want to share my results. It's up to you to accept them.

Best regards Philipp

[jstoiko]

Thank you for your contribution @Kaiser1989. Unfortunately this project is no longer maintained and should have been archived. I will notify the owners. This project originally spawned out of RAML for JAX-RS which has been archived. Please feel free to reach out if you need assistance/guidance in maintaining a fork.