N+1 fixed

.run/petclinic.run.xml

@@ -9,6 +9,11 @@
     <module name="spring-petclinic.main" />
     <option name="PROGRAM_PARAMETERS" value="--warning-mode all" />
     <option name="VM_PARAMETERS" value="-Dotel.instrumentation.jdbc-datasource.enabled=true" />
+    <extension name="software.aws.toolkits.jetbrains.core.execution.JavaAwsConnectionExtension">
+      <option name="credential" />
+      <option name="region" />
+      <option name="useCurrentConnection" value="false" />
+    </extension>
     <method v="2">
       <option name="Gradle.BeforeRunTask" enabled="true" tasks="bootJar" externalProjectPath="$PROJECT_DIR$" vmOptions="" scriptParameters="" />
     </method>

src/main/java/org/springframework/samples/petclinic/owner/OwnerController.java

@@ -20,6 +20,7 @@ import java.util.Map;
 
 import io.opentelemetry.instrumentation.annotations.WithSpan;
 import org.springframework.data.domain.Page;
+import org.springframework.data.domain.PageImpl;
 import org.springframework.data.domain.PageRequest;
 import org.springframework.data.domain.Pageable;
 import org.springframework.stereotype.Controller;
@@ -104,9 +105,8 @@ class OwnerController {
 		// empty owner search for all records without n+1 queries
 		if (StringUtils.isEmpty(owner.getLastName())){
 			List<Owner> ownerList = owners.findAllWithPetsAndVisits();
-			//model.addAttribute("owners", ownerList);
-			//need to figure out displaying owners without n+1.
-			return "owners/ownersList";
+			Page<Owner> ownerPageNP1 = new PageImpl<>(ownerList);
+			return addPaginationModel(0, model, ownerPageNP1);
 		}
 
 		// find owners by last name
@@ -139,7 +139,7 @@ class OwnerController {
 	}
 
 	private Page<Owner> findPaginatedForOwnersLastName(int page, String lastname) {
-		int pageSize = 12;
+		int pageSize = 5;
 		Pageable pageable = PageRequest.of(page - 1, pageSize);
 		return owners.findByLastName(lastname, pageable);
 	}

src/main/java/org/springframework/samples/petclinic/owner/OwnerRepository.java

@@ -61,8 +61,6 @@ public interface OwnerRepository extends Repository<Owner, Integer> {
 	 * Retrieve {@link Owner}s all owners including their pets and visitations
 	 * @return a Collection of {@link Owner}s
 	 */
-	/*@Query("SELECT DISTINCT owner FROM Owner owner LEFT JOIN FETCH owner.pets pet LEFT JOIN FETCH visits WHERE pet.id = visits.petId")
-	List<Owner> findAllWithPetsAndVisits();*/
 	@Query("SELECT DISTINCT owner FROM Owner owner LEFT JOIN FETCH owner.pets LEFT JOIN FETCH pets.visits")
 	List<Owner> findAllWithPetsAndVisits();