Mechanism to pass down custom Java annotations to code generated off EMF Ecore

[ideas-into-software]

Currently, there is no mechanism to pass down custom ( non-EMF ) Java annotations to code generated off EMF Ecore.

Usage of such code generated off EMF model prevents utilization of e.g. Swagger Annotations to generate OpenAPI specification dynamically.

Especially in the case of EMF model based on the ‘GeoJSON’ standard, lack of such feature in EMF itself makes it impossible for Swagger generator to even find Geometry sub-types (e.g. Point, Polygon, LineString, etc.) and serialization / deserialization to work properly, as Swagger requires so called discriminator and discriminator mapping in models utilizing class inheritance.

More info

• “Swagger”

  • “OpenAPI Specification”: https://swagger.io/specification/
  • “oneOf, anyOf, allOf, not: allOf”: https://swagger.io/docs/specification/data-models/oneof-anyof-allof-not/#allof
  • “Inheritance and Polymorphism”: https://swagger.io/docs/specification/data-models/inheritance-and-polymorphism/

• “OpenAPI Generator”: https://openapi-generator.tech/

• “GeoJSON”: https://geojson.org/

[merks]

Here are related Bugzillas:

• https://bugs.eclipse.org/bugs/show_bug.cgi?id=176726
• https://bugs.eclipse.org/bugs/show_bug.cgi?id=217220
• https://bugs.eclipse.org/bugs/show_bug.cgi?id=485090

You'll note that some are very old. Unfortunately, I have no plan to develop something like this in my non-existent spare time, which is why the old wish list remains very long:

https://bugs.eclipse.org/bugs/buglist.cgi?bug_status=NEW&bug_status=ASSIGNED&bug_status=REOPENED&bug_status=RESOLVED&classification=Modeling&component=releng&component=doc&component=website&component=Core&component=Doc&component=Edit&component=Mapping&component=Tools&component=Xcore&component=XML%2FXMI&list_id=21366186&order=resolution%2Cbug_id&product=EMF&query_format=advanced&resolution=---&resolution=FIXED