JAVA-41261 Moved code of article spring-hibernate-n1-problem and Upda… (#18391)

* JAVA-41261 Moved code of article spring-hibernate-n1-problem and Updated all Readme

* JAVA-41261 Moved code of article spring-boot-hikari and fixed integration issue of spring-boot-persistence-5

Author: Bipinkumar27

persistence-modules/spring-boot-persistence-2/README.md

@@ -126,6 +126,16 @@
             <artifactId>oracle-spring-boot-starter-ucp</artifactId>
             <version>${oracle-spring-boot-starter-ucp.version}</version>
         </dependency>
+        <dependency>
+            <groupId>io.hypersistence</groupId>
+            <artifactId>hypersistence-utils-hibernate-62</artifactId>
+            <version>${hypersistence-utils.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.vladmihalcea</groupId>
+            <artifactId>db-util</artifactId>
+            <version>${db.util.version}</version>
+        </dependency>
 
     </dependencies>
 
@@ -150,6 +160,8 @@
         <junit-jupiter.version>5.9.3</junit-jupiter.version> <!-- Upgrading to latest version breaks the tests -->
         <spring-boot.version>3.1.5</spring-boot.version>
         <oracle-spring-boot-starter-ucp.version>24.2.0</oracle-spring-boot-starter-ucp.version>
+        <hypersistence-utils.version>3.7.0</hypersistence-utils.version>        
+        <db.util.version>1.0.7</db.util.version>              
     </properties>
 
 </project>

persistence-modules/spring-boot-persistence-2/pom.xml

@@ -0,0 +1,14 @@
+package com.baeldung.listvsset;
+
+import java.lang.reflect.ParameterizedType;
+import java.util.Arrays;
+import java.util.List;
+
+public abstract class ParametrizationAware<T> {
+
+    public List<Class<T>> getParametrizationClass() {
+        ParameterizedType type = (ParameterizedType) this.getClass().getGenericSuperclass();
+        return Arrays.stream(type.getActualTypeArguments())
+          .map(s -> ((Class<T>) s)).toList();
+    }
+}

persistence-modules/spring-boot-persistence-2/src/main/java/com/baeldung/listvsset/ParametrizationAware.java

@@ -0,0 +1,63 @@
+package com.baeldung.listvsset;
+
+import java.util.List;
+import java.util.Optional;
+import java.util.function.Predicate;
+import java.util.function.ToIntFunction;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.transaction.annotation.Transactional;
+
+@Transactional
+public class Service<S> extends ParametrizationAware<S> {
+
+    private final JpaRepository<S, Long> repository;
+
+    public Service(JpaRepository<S, Long> repository) {
+        this.repository = repository;
+    }
+
+    public JpaRepository<S, Long> getRepository() {
+        return repository;
+    }
+
+    public int countNumberOfRequestsWithFunction(ToIntFunction<List<S>> function) {
+        return function.applyAsInt(repository.findAll());
+    }
+
+
+    public Optional<S> getUserById(Long id) {
+        return repository.findById(id);
+    }
+
+    public void deleteAll() {
+        repository.deleteAll();
+    }
+
+    public List<S> saveAll(Iterable<S> entities) {
+        return repository.saveAll(entities);
+    }
+
+    public List<S> findAll() {
+        return repository.findAll();
+    }
+
+    public Optional<S> getUserByIdWithPredicate(long id, Predicate<S> predicate) {
+        Optional<S> user = repository.findById(id);
+        user.ifPresent(predicate::test);
+        return user;
+    }
+
+    public int getUserByIdWithFunction(Long id, ToIntFunction<S> function) {
+
+        Optional<S> optionalUser = repository.findById(id);
+        if (optionalUser.isPresent()) {
+            return function.applyAsInt(optionalUser.get());
+        } else {
+            return 0;
+        }
+    }
+
+    public void save(S entity) {
+        repository.save(entity);
+    }
+}