Allow declarative OpenAPI extension points

Author: avillar

ogc/bblocks/extension.py

@@ -167,7 +167,8 @@ def process_extensions(self, bblock: BuildingBlock):
         return result, parent_is_openapi
 
     def _process_openapi(self):
-        raise ValueError('Support for extending OpenAPI documents is not yet implemented.')
+        print('WARNING: Extension points in OpenAPI building blocks are merely declarative. '
+              'No additional postprocessing of the OpenAPI document will be done.')
 
     def _process_schema(self, bblock: BuildingBlock, root_schema: ReferencedSchema, parent_id: str,
                         extensions: dict[str, str], extension_schema_mappings: dict[str, dict[str, str]]):

ogc/bblocks/postprocess.py

@@ -253,8 +253,6 @@ def do_postprocess(bblock: BuildingBlock, light: bool = False) -> bool:
 
                 openapi_contents = None
                 if building_block.extensionPoints:
-                    if building_block.schema.exists or building_block.openapi.exists:
-                        raise ValueError('Extension points are incompatible with schema and OpenAPI definitions')
                     try:
                         extended_schema, is_openapi = extender.process_extensions(building_block)
                     except Exception as e: