JAVA-26705 Upgrade lombok to latest version (#15305)

Co-authored-by: timis1 <noreplay@yahoo.com>

messaging-modules/postgres-notify/pom.xml

@@ -41,6 +41,7 @@
             <groupId>org.projectlombok</groupId>
             <artifactId>lombok</artifactId>
             <optional>true</optional>
+            <version>${lombok.version}</version>
         </dependency>
 
     </dependencies>

messaging-modules/postgres-notify/src/main/java/com/baeldung/messaging/postgresql/controller/OrdersController.java

@@ -42,7 +42,7 @@ public class OrdersController {
     public ResponseEntity<Order> getOrderById(@PathVariable Long id) {
         
         Optional<Order> o = orders.findById(id);
-        if (o.isEmpty()) {
+        if (!o.isPresent()) {
             return ResponseEntity.notFound().build();
         }
         

messaging-modules/postgres-notify/src/main/java/com/baeldung/messaging/postgresql/service/NotificationHandler.java

@@ -23,7 +23,7 @@ public class NotificationHandler implements Consumer<PGNotification>{
     public void accept(PGNotification t) {
         log.info("Notification received: pid={}, name={}, param={}",t.getPID(),t.getName(),t.getParameter());
         Optional<Order> order = orders.findById(Long.valueOf(t.getParameter()));
-        if ( !order.isEmpty()) {
+        if ( order.isPresent()) {
             log.info("order details: {}", order.get());
         }
     }

messaging-modules/postgres-notify/src/main/java/com/baeldung/messaging/postgresql/service/OrdersService.java

@@ -43,14 +43,14 @@ public class OrdersService {
     @Transactional(readOnly = true)
     public Optional<Order> findById(Long id) {
         Optional<Order> o = Optional.ofNullable(ordersCache.get(id, Order.class));
-        if ( !o.isEmpty() ) {
+        if ( o.isPresent() ) {
             log.info("findById: cache hit, id={}",id);
             return o;
         }
         
         log.info("findById: cache miss, id={}",id);
         o = repo.findById(id);
-        if ( o.isEmpty()) {
+        if ( !o.isPresent()) {
             return o;
         }