StackOverflowError when using @ParameterObject on groovy class. Fixes #2426

Author: bnasslahsen

springdoc-openapi-starter-common/src/main/java/org/springdoc/core/extractor/MethodParameterPojoExtractor.java

@@ -93,6 +93,7 @@ public class MethodParameterPojoExtractor {
 		SIMPLE_TYPE_PREDICATES.add(Class::isEnum);
 		SIMPLE_TYPE_PREDICATES.add(Class::isArray);
 		SIMPLE_TYPE_PREDICATES.add(MethodParameterPojoExtractor::isSwaggerPrimitiveType);
+		SIMPLE_TYPE_PREDICATES.add(aClass -> aClass.getName().startsWith("org.codehaus.groovy.reflection"));
 	}
 
 	/**

springdoc-openapi-tests/springdoc-openapi-groovy-tests/src/test/groovy/test/org/springdoc/api/app1/CarController.groovy

@@ -20,6 +20,7 @@
 
 package test.org.springdoc.api.app1
 
+import org.springdoc.core.annotations.ParameterObject
 
 import org.springframework.web.bind.annotation.GetMapping
 import org.springframework.web.bind.annotation.PathVariable
@@ -33,14 +34,18 @@ class CarController {
 	CarController(CarService carService) {
 		this.carService = carService
 	}
+	
+	@GetMapping(path = 'cars/{carId}')
+	Car getCar(@PathVariable(value = 'carId') Long carId) {
+		return carService.getCar(carId)
+	}
 
 	@GetMapping(path = '/cars')
-	List<Car> getCars() {
+	List<Car> getCars(@ParameterObject CarsFilter filter) {
 		return carService.getCars()
 	}
 
-	@GetMapping(path = 'cars/{carId}')
-	Car getCar(@PathVariable(value = 'carId') Long carId) {
-		return carService.getCar(carId)
+	static class CarsFilter {
+		String name;
 	}
 }

springdoc-openapi-tests/springdoc-openapi-groovy-tests/src/test/groovy/test/org/springdoc/api/app2/CarController.groovy

@@ -20,6 +20,7 @@
 
 package test.org.springdoc.api.app2
 
+import org.springdoc.core.annotations.ParameterObject
 
 import org.springframework.web.bind.annotation.GetMapping
 import org.springframework.web.bind.annotation.PathVariable
@@ -35,10 +36,14 @@ class CarController {
 	}
 
 	@GetMapping(path = '/cars')
-	List<test.org.springdoc.api.app2.Car> getCars() {
+	List<test.org.springdoc.api.app1.Car> getCars(@ParameterObject CarsFilter filter) {
 		return carService.getCars()
 	}
 
+	static class CarsFilter {
+		String name;
+	}
+
 	@GetMapping(path = 'cars/{carId}')
 	test.org.springdoc.api.app2.Car getCar(@PathVariable(value = 'carId') Long carId) {
 		return carService.getCar(carId)