Regression in generating doc for Kotlin LinkedHashSet. Fixes #3178

Author: bnasslahsen

springdoc-openapi-starter-common/src/main/java/org/springdoc/core/customizers/KotlinDeprecatedPropertyCustomizer.kt

@@ -56,6 +56,10 @@ class KotlinDeprecatedPropertyCustomizer(
 
 		val javaType: JavaType =
 			objectMapperProvider.jsonMapper().constructType(type.type)
+		if (javaType.rawClass.packageName.startsWith("java.")) {
+			return resolvedSchema
+		}
+		
 		val kotlinClass = javaType.rawClass.kotlin
 
 		// Check each property of the class

springdoc-openapi-tests/springdoc-openapi-kotlin-webmvc-tests/src/test/kotlin/test/org/springdoc/api/v31/app3/SystemStatusController.kt

@@ -18,9 +18,11 @@
 
 package test.org.springdoc.api.v31.app3
 
+import org.springframework.boot.runApplication
 import org.springframework.web.bind.annotation.GetMapping
 import org.springframework.web.bind.annotation.RequestMapping
 import org.springframework.web.bind.annotation.RestController
+import test.org.springdoc.api.v31.app22.DemoApp
 
 enum class SystemStatus(val status: String) {
 	OK("OK")
@@ -30,9 +32,17 @@ data class SystemStatusResponse(
 	val status: SystemStatus
 )
 
+data class Foo(
+	val bar: LinkedHashSet<String>,
+)
+
 @RestController
 @RequestMapping("/status")
 class SystemStatusController {
+
+	@GetMapping("/bar")
+	fun getTestData(): Foo = Foo(bar = linkedSetOf("test"))
+
 	@GetMapping
 	fun index() = SystemStatusResponse(SystemStatus.OK)
 

springdoc-openapi-tests/springdoc-openapi-kotlin-webmvc-tests/src/test/resources/results/3.1.0/app3.json

@@ -51,14 +51,31 @@
         },
         "deprecated": true
       }
+    },
+    "/status/bar": {
+      "get": {
+        "tags": [
+          "system-status-controller"
+        ],
+        "operationId": "getTestData",
+        "responses": {
+          "200": {
+            "description": "OK",
+            "content": {
+              "*/*": {
+                "schema": {
+                  "$ref": "#/components/schemas/Foo"
+                }
+              }
+            }
+          }
+        }
+      }
     }
   },
   "components": {
     "schemas": {
       "SystemStatusResponse": {
-        "required": [
-          "status"
-        ],
         "type": "object",
         "properties": {
           "status": {
@@ -67,7 +84,24 @@
               "OK"
             ]
           }
-        }
+        },
+        "required": [
+          "status"
+        ]
+      },
+      "Foo": {
+        "type": "object",
+        "properties": {
+          "bar": {
+            "type": "array",
+            "items": {
+              "type": "string"
+            }
+          }
+        },
+        "required": [
+          "bar"
+        ]
       }
     }
   }