Restricting Values Assignable to Discriminating Property - swagger

Question

Swagger/OpenAPI definition:
{
"openapi" : "3.0.1",
"info" : {
"title" : "OpenAPI definition",
"version" : "v0"
},
"servers" : [ {
"url" : "http://sandbox.test.com:8063/api/recs",
"description" : "Generated server url"
} ],
"paths" : {
"/data" : {
"get" : {
"tags" : [ "Data" ],
"operationId" : "getData",
"parameters" : [ {
"name" : "goal",
"in" : "query",
"required" : false,
"schema" : {
"$ref" : "#/components/schemas/GoalsEnum_User"
}
} ],
"responses" : {
"404" : {
"description" : "Not Found",
"content" : {
"*/*" : {
"schema" : {
"type" : "object"
}
}
}
},
"200" : {
"description" : "Result generated successfully",
"content" : {
"application/json" : {
"schema" : {
"type" : "array",
"items" : {
"oneOf" : [ {
"$ref" : "#/components/schemas/EventDataDto"
}, {
"$ref" : "#/components/schemas/FreeRideDataDto"
}]
}
}
}
}
}
}
}
}
},
"components" : {
"schemas" : {
"GoalsEnum_User" : {
"type" : "string",
"enum" : [ "User1", "User2" ]
},
"EventDataDto" : {
"type" : "object",
"allOf" : [ {
"$ref" : "#/components/schemas/ParentDataSchema_UserData"
}, {
"type" : "object",
"properties" : {
"rules" : {
"type" : "array",
"items" : {
"$ref" : "#/components/schemas/RuleDto"
}
}
}
}, {
"$ref" : "#/components/schemas/ParentDataSchema"
} ]
},
"FreeRideDataDto" : {
"type" : "object",
"allOf" : [ {
"$ref" : "#/components/schemas/ParentDataSchema"
}, {
"type" : "object",
"properties" : {
"completedRoutes" : {
"type" : "array",
"items" : {
"type" : "integer",
"format" : "int64"
}
},
"averageDistance" : {
"type" : "number",
"format" : "double"
},
"averageDuration" : {
"type" : "number",
"format" : "double"
}
}
}, {
"$ref" : "#/components/schemas/ParentDataSchema_UserData"
} ]
},
"ParentDataSchema" : {
"required" : [ "type" ],
"type" : "object",
"properties" : {
"type" : {
"type" : "string",
"enum" : [ "FREE_RIDE", "EVENT" ]
}
},
"discriminator" : {
"propertyName" : "type",
"mapping" : {
"EVENT" : "#/components/schemas/EventRecommendationDto",
"FREE_RIDE" : "#/components/schemas/FreeRideRecommendationDto"
}
}
},
"ParentDataSchema_UserData" : {
"required" : [ "type" ],
"type" : "object",
"properties" : {
"type" : {
"type" : "string",
"enum" : [ "FREE_RIDE", "EVENT" ]
}
},
"discriminator" : {
"propertyName" : "type",
"mapping" : {
"EVENT" : "#/components/schemas/EventRecommendationDto",
"FREE_RIDE" : "#/components/schemas/FreeRideRecommendationDto"
}
}
}
}
}
}
Generated Example:
[
{
"type": "FREE_RIDE",
"rules": [
{
"ruleId": 0,
"categoryId": 0,
"name": "string",
"type": "string",
"value": "string"
}
]
},
{
"type": "FREE_RIDE",
"completedRoutes": [
0
],
"averageDistance": 0,
"averageDuration": 0
}
]
Since there are specific values for the discriminating field "type", I expect the examples to have the correct value for detected types. Although the types were listed correctly, the type field is not set to the discriminating value.
Is there anything I can do to the Swagger/OpenAPI definitions or Swagger UI to fix this? I'm even open to adding a bug-fix if you can point me to where the values of the field examples are set and how can I choose the discriminating value instead of the first one in the enum instead.