Description
Describe the bug
When either the request or response payloads are subclasses in a class hierarchy, the generated OpenAPI UI content does not render the schemas for subclasses, when the Spring Boot app is built and run as a native image using Spring Native and GraalVM. The schemas are rendered properly when the same code is run under non-native, JVM mode.
To Reproduce
Steps to reproduce the behavior:
-
What version of spring-boot you are using?
2.5.4 -
What modules and versions of springdoc-openapi are you using?
springdoc-openapi-ui 1.5.10
springdoc-openapi-security 1.5.10 -
What is the actual and the expected result using OpenAPI Description (yml or json)?
Expected:
{"content":{"application/json":{"schema":{"oneOf":[{"$ref":"#/components/schemas/ChildA"},{"$ref":"#/components/schemas/ChildB"},{"$ref":"#/components/schemas/ChildC"}]}}},"required":true}Actual:
{"content":{"application/json":{"schema":{},"exampleSetFlag":false}} -
Provide with a sample code (HelloController) or Test that reproduces the problem
@GetMapping("/children/{childId}")
@Operation(summary = "Get child by child ID")
@ApiResponses(value = {
@ApiResponse(responseCode = "200", description = "Found the child"),
@ApiResponse(responseCode = "404", description = "Child not found", content = @Content)
})
public AbstractChild byChildId(@PathVariable("childId") String childId) {
return childrenRepo.findFirstByChildId(childId).orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND, "No child found"));
}
Note: ChildA, ChildB and ChildC are concrete subclasses of AbstractChild
Expected behavior
The behavior should be the same when the code is run in non-native JVM mode, as well as when the code is built and run as native image using GraalVM and Spring Native. Currently, the non-native JVM mode correctly renders the schema for the class hierarchy in the "schema: oneOf" format, whereas the native build does not generate any schema for the subclasses.
Additional context
Spring Boot 2.5.4
Spring API Doc 1.5.10
Spring Native 0.10.3
GraalVM CE 21.2.0 (build 11.0.12+6-jvmci-21.2-b08