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@ArraySchema with items inheriting from an abstract base class not generating properly
I have the following lists annotated with @ArraySchema, and they're meant to hold subtypes of an abstract class. The openapi generated for each list is different. I would like to know how to achieve the second list's config, but without the unbound wildcard. I'm not sure what I'm doing wrong. @ArraySchema(schema=@Schema(type="object", description = "description", oneOf = {SubType1.class})) List<AbstractType> foo; @ArraySchema(schema=@Schema(type="object", description = "description", oneOf = {SubType1.class})) List<?> bar; The abstract class's type hierarchy is fairly simple: // AbstractType.java public abstract class AbstractType { protected CommonField field; } // SubType1.java public class SubType1 extends AbstractType { private String baz; } The generated OpenApi: "foo": { "type": "array", "items": { "$ref": "#/components/schemas/AbstractType" } }, "bar": { "type": "array", "items": { "type": "object", "description": "description", "oneOf": [ { "$ref": "#/components/schemas/SubType1" } ] } }