Add tag class names in generated REST Data Panache resources

Fix #26400

(cherry picked from commit 308f538)

extensions/panache/hibernate-orm-rest-data-panache/deployment/src/test/java/io/quarkus/hibernate/orm/rest/data/panache/deployment/openapi/OpenApiIntegrationTest.java

@@ -49,12 +49,16 @@ public void testOpenApiForGeneratedResources() {
                 .header("Content-Type", "application/json;charset=UTF-8")
                 .body("info.title", Matchers.equalTo("quarkus-hibernate-orm-rest-data-panache-deployment API"))
                 .body("paths.'/collections'", Matchers.hasKey("get"))
+                .body("paths.'/collections'.get.tags", Matchers.hasItem("CollectionsResource"))
                 .body("paths.'/collections'", Matchers.hasKey("post"))
+                .body("paths.'/collections'.post.tags", Matchers.hasItem("CollectionsResource"))
                 .body("paths.'/collections/{id}'", Matchers.hasKey("get"))
                 .body("paths.'/collections/{id}'", Matchers.hasKey("put"))
                 .body("paths.'/collections/{id}'", Matchers.hasKey("delete"))
                 .body("paths.'/empty-list-items'", Matchers.hasKey("get"))
+                .body("paths.'/empty-list-items'.get.tags", Matchers.hasItem("EmptyListItemsResource"))
                 .body("paths.'/empty-list-items'", Matchers.hasKey("post"))
+                .body("paths.'/empty-list-items'.post.tags", Matchers.hasItem("EmptyListItemsResource"))
                 .body("paths.'/empty-list-items/{id}'", Matchers.hasKey("get"))
                 .body("paths.'/empty-list-items/{id}'", Matchers.hasKey("put"))
                 .body("paths.'/empty-list-items/{id}'", Matchers.hasKey("delete"))

extensions/panache/hibernate-reactive-rest-data-panache/deployment/src/test/java/io/quarkus/hibernate/reactive/rest/data/panache/deployment/openapi/OpenApiIntegrationTest.java

@@ -49,12 +49,16 @@ public void testOpenApiForGeneratedResources() {
                 .header("Content-Type", "application/json;charset=UTF-8")
                 .body("info.title", Matchers.equalTo("quarkus-hibernate-reactive-rest-data-panache-deployment API"))
                 .body("paths.'/collections'", Matchers.hasKey("get"))
+                .body("paths.'/collections'.get.tags", Matchers.hasItem("CollectionsResource"))
                 .body("paths.'/collections'", Matchers.hasKey("post"))
+                .body("paths.'/collections'.post.tags", Matchers.hasItem("CollectionsResource"))
                 .body("paths.'/collections/{id}'", Matchers.hasKey("get"))
                 .body("paths.'/collections/{id}'", Matchers.hasKey("put"))
                 .body("paths.'/collections/{id}'", Matchers.hasKey("delete"))
                 .body("paths.'/empty-list-items'", Matchers.hasKey("get"))
+                .body("paths.'/empty-list-items'.get.tags", Matchers.hasItem("EmptyListItemsResource"))
                 .body("paths.'/empty-list-items'", Matchers.hasKey("post"))
+                .body("paths.'/empty-list-items'.post.tags", Matchers.hasItem("EmptyListItemsResource"))
                 .body("paths.'/empty-list-items/{id}'", Matchers.hasKey("get"))
                 .body("paths.'/empty-list-items/{id}'", Matchers.hasKey("put"))
                 .body("paths.'/empty-list-items/{id}'", Matchers.hasKey("delete"))

extensions/panache/rest-data-panache/deployment/src/main/java/io/quarkus/rest/data/panache/deployment/JaxRsResourceImplementor.java

@@ -7,8 +7,11 @@
 import javax.inject.Inject;
 import javax.ws.rs.Path;
 
+import org.apache.commons.lang3.StringUtils;
 import org.jboss.logging.Logger;
 
+import io.quarkus.deployment.Capabilities;
+import io.quarkus.deployment.Capability;
 import io.quarkus.gizmo.ClassCreator;
 import io.quarkus.gizmo.ClassOutput;
 import io.quarkus.gizmo.FieldCreator;
@@ -29,6 +32,7 @@
 class JaxRsResourceImplementor {
 
     private static final Logger LOGGER = Logger.getLogger(JaxRsResourceImplementor.class);
+    private static final String OPENAPI_TAG_ANNOTATION = "org.eclipse.microprofile.openapi.annotations.tags.Tag";
 
     private final List<MethodImplementor> methodImplementors;
 
@@ -58,24 +62,30 @@ class JaxRsResourceImplementor {
      * }
      * </pre>
      */
-    void implement(ClassOutput classOutput, ResourceMetadata resourceMetadata, ResourceProperties resourceProperties) {
+    void implement(ClassOutput classOutput, ResourceMetadata resourceMetadata, ResourceProperties resourceProperties,
+            Capabilities capabilities) {
         String controllerClassName = resourceMetadata.getResourceInterface() + "JaxRs_" +
                 HashUtil.sha1(resourceMetadata.getResourceInterface());
         LOGGER.tracef("Starting generation of '%s'", controllerClassName);
         ClassCreator classCreator = ClassCreator.builder()
                 .classOutput(classOutput).className(controllerClassName)
                 .build();
 
-        implementClassAnnotations(classCreator, resourceProperties);
+        implementClassAnnotations(classCreator, resourceMetadata, resourceProperties, capabilities);
         FieldDescriptor resourceField = implementResourceField(classCreator, resourceMetadata);
         implementMethods(classCreator, resourceMetadata, resourceProperties, resourceField);
 
         classCreator.close();
         LOGGER.tracef("Completed generation of '%s'", controllerClassName);
     }
 
-    private void implementClassAnnotations(ClassCreator classCreator, ResourceProperties resourceProperties) {
+    private void implementClassAnnotations(ClassCreator classCreator, ResourceMetadata resourceMetadata,
+            ResourceProperties resourceProperties, Capabilities capabilities) {
         classCreator.addAnnotation(Path.class).addValue("value", resourceProperties.getPath());
+        if (capabilities.isPresent(Capability.SMALLRYE_OPENAPI)) {
+            String className = StringUtils.substringAfterLast(resourceMetadata.getResourceInterface(), ".");
+            classCreator.addAnnotation(OPENAPI_TAG_ANNOTATION).add("name", className);
+        }
     }
 
     private FieldDescriptor implementResourceField(ClassCreator classCreator, ResourceMetadata resourceMetadata) {

extensions/panache/rest-data-panache/deployment/src/main/java/io/quarkus/rest/data/panache/deployment/RestDataProcessor.java

@@ -84,7 +84,7 @@ void implementResources(CombinedIndexBuildItem index, List<RestDataResourceBuild
 
             }
             if (resourceProperties.isExposed()) {
-                jaxRsResourceImplementor.implement(classOutput, resourceMetadata, resourceProperties);
+                jaxRsResourceImplementor.implement(classOutput, resourceMetadata, resourceProperties, capabilities);
             }
         }
     }