Fix JAXB unmarshalling error when compiling to native

extensions/jaxb/deployment/src/main/java/io/quarkus/jaxb/deployment/JaxbProcessor.java

@@ -70,6 +70,7 @@
 import io.quarkus.deployment.builditem.nativeimage.NativeImageResourceBundleBuildItem;
 import io.quarkus.deployment.builditem.nativeimage.NativeImageSystemPropertyBuildItem;
 import io.quarkus.deployment.builditem.nativeimage.ReflectiveClassBuildItem;
+import io.quarkus.deployment.builditem.nativeimage.ReflectiveHierarchyBuildItem;
 import io.quarkus.deployment.builditem.nativeimage.ReflectiveHierarchyIgnoreWarningBuildItem;
 import io.quarkus.deployment.builditem.nativeimage.RuntimeInitializedClassBuildItem;
 import io.quarkus.deployment.builditem.nativeimage.ServiceProviderBuildItem;
@@ -186,6 +187,7 @@ void processAnnotationsAndIndexFiles(
             BuildProducer<NativeImageProxyDefinitionBuildItem> proxyDefinitions,
             CombinedIndexBuildItem combinedIndexBuildItem,
             List<JaxbFileRootBuildItem> fileRoots,
+            BuildProducer<ReflectiveHierarchyBuildItem> reflectiveHierarchies,
             BuildProducer<ReflectiveClassBuildItem> reflectiveClass,
             BuildProducer<NativeImageResourceBuildItem> resource,
             BuildProducer<NativeImageResourceBundleBuildItem> resourceBundle,
@@ -202,10 +204,11 @@ void processAnnotationsAndIndexFiles(
         for (DotName jaxbRootAnnotation : JAXB_ROOT_ANNOTATIONS) {
             for (AnnotationInstance jaxbRootAnnotationInstance : index
                     .getAnnotations(jaxbRootAnnotation)) {
-                if (jaxbRootAnnotationInstance.target().kind() == Kind.CLASS) {
-                    String className = jaxbRootAnnotationInstance.target().asClass().name().toString();
-                    reflectiveClass.produce(ReflectiveClassBuildItem.builder(className).methods().fields().build());
-                    classesToBeBound.add(className);
+                if (jaxbRootAnnotationInstance.target().kind() == Kind.CLASS
+                        && !JAXB_ANNOTATIONS.contains(jaxbRootAnnotationInstance.target().asClass().getClass())) {
+                    DotName targetClass = jaxbRootAnnotationInstance.target().asClass().name();
+                    addReflectiveHierarchyClass(targetClass, reflectiveHierarchies, index);
+                    classesToBeBound.add(targetClass.toString());
                     jaxbRootAnnotationsDetected = true;
                 }
             }
@@ -412,6 +415,17 @@ public static Stream<Path> safeWalk(Path p) {
         }
     }
 
+    private void addReflectiveHierarchyClass(DotName className,
+            BuildProducer<ReflectiveHierarchyBuildItem> reflectiveHierarchy,
+            IndexView index) {
+        Type jandexType = Type.create(className, Type.Kind.CLASS);
+        reflectiveHierarchy.produce(new ReflectiveHierarchyBuildItem.Builder()
+                .type(jandexType)
+                .index(index)
+                .source(getClass().getSimpleName() + " > " + jandexType.name().toString())
+                .build());
+    }
+
     private void addReflectiveClass(BuildProducer<ReflectiveClassBuildItem> reflectiveClass, boolean methods, boolean fields,
             String... className) {
         reflectiveClass.produce(new ReflectiveClassBuildItem(methods, fields, className));

integration-tests/jaxb/src/main/java/io/quarkus/it/jaxb/BookIBANField.java

@@ -0,0 +1,24 @@
+package io.quarkus.it.jaxb;
+
+import jakarta.xml.bind.annotation.XmlAccessType;
+import jakarta.xml.bind.annotation.XmlAccessorType;
+import jakarta.xml.bind.annotation.XmlElement;
+import jakarta.xml.bind.annotation.XmlTransient;
+
+@XmlAccessorType(XmlAccessType.FIELD)
+@XmlTransient
+public abstract class BookIBANField {
+    @XmlElement
+    private String IBAN;
+
+    public BookIBANField() {
+    }
+
+    public void setIBAN(String IBAN) {
+        this.IBAN = IBAN;
+    }
+
+    public String getIBAN() {
+        return IBAN;
+    }
+}

integration-tests/jaxb/src/main/java/io/quarkus/it/jaxb/BookWithParent.java

@@ -0,0 +1,27 @@
+package io.quarkus.it.jaxb;
+
+import jakarta.xml.bind.annotation.XmlElement;
+import jakarta.xml.bind.annotation.XmlRootElement;
+import jakarta.xml.bind.annotation.XmlType;
+
+@XmlRootElement
+@XmlType(propOrder = { "IBAN", "title" })
+public class BookWithParent extends BookIBANField {
+    @XmlElement
+    private String title;
+
+    public BookWithParent() {
+    }
+
+    public BookWithParent(String title) {
+        this.title = title;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+}

integration-tests/jaxb/src/main/java/io/quarkus/it/jaxb/JaxbResource.java

@@ -65,4 +65,19 @@ public io.quarkus.it.jaxb.Response seeAlso() {
         return response;
     }
 
+    //Test for Jaxb with parent class field
+    @Path("/bookwithparent")
+    @GET
+    @Produces(MediaType.TEXT_PLAIN)
+    public String getBookWithParent(@QueryParam("name") String name, @QueryParam("iban") String iban) throws JAXBException {
+        BookWithParent bookWithParent = new BookWithParent();
+        bookWithParent.setTitle(name);
+        bookWithParent.setIBAN(iban);
+        JAXBContext context = JAXBContext.newInstance(bookWithParent.getClass());
+        Marshaller marshaller = context.createMarshaller();
+        StringWriter sw = new StringWriter();
+        marshaller.marshal(bookWithParent, sw);
+        return sw.toString();
+    }
+
 }

integration-tests/jaxb/src/test/java/io/quarkus/it/jaxb/JaxbIT.java

@@ -1,8 +1,24 @@
 package io.quarkus.it.jaxb;
 
+import static io.restassured.RestAssured.given;
+import static org.hamcrest.Matchers.is;
+
+import org.junit.jupiter.api.Test;
+
 import io.quarkus.test.junit.QuarkusIntegrationTest;
 
 @QuarkusIntegrationTest
 public class JaxbIT extends JaxbTest {
-
+    //We have to test native executable of Jaxb
+    @Test
+    public void bookWithParent() {
+        given().when()
+                .param("name", "Foundation")
+                .param("iban", "4242")
+                .get("/jaxb/bookwithparent")
+                .then()
+                .statusCode(200)
+                .body(is(
+                        "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?><bookWithParent><IBAN>4242</IBAN><title>Foundation</title></bookWithParent>"));
+    }
 }