eugenp · saajn · Mar 2, 2025 · Feb 25, 2025 · Feb 28, 2025
diff --git a/persistence-modules/hibernate-jpa-3/pom.xml b/persistence-modules/hibernate-jpa-3/pom.xml
@@ -62,7 +62,11 @@
         <spring-boot.version>3.0.4</spring-boot.version>
         <h2.version>2.1.214</h2.version>
         <p6spy.version>3.9.1</p6spy.version>
-        <jakarta-persistence.version>3.2.0</jakarta-persistence.version>
+        <!--
+        Spring Boot v3.0.4 is designed and tested with Jakarta Persistence API v3.1.0
+        Version upgrade should be done with cautious, and in correlation with Spring Boot version upgrade
+        -->
+        <jakarta-persistence.version>3.1.0</jakarta-persistence.version>
     </properties>
 
 </project>
diff --git a/...te-jpa-3/src/main/java/com/baeldung/hibernate/dirtychecking/DirtyCheckingApplication.java b/...te-jpa-3/src/main/java/com/baeldung/hibernate/dirtychecking/DirtyCheckingApplication.java
@@ -0,0 +1,13 @@
+package com.baeldung.hibernate.dirtychecking;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class DirtyCheckingApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(DirtyCheckingApplication.class, args);
+    }
+
+}
diff --git a/...es/hibernate-jpa-3/src/main/java/com/baeldung/hibernate/dirtychecking/entity/Product.java b/...es/hibernate-jpa-3/src/main/java/com/baeldung/hibernate/dirtychecking/entity/Product.java
@@ -0,0 +1,48 @@
+package com.baeldung.hibernate.dirtychecking.entity;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+
+@Entity
+public class Product {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+    private String code;
+    private double price;
+
+    public Product() {
+    }
+
+    public Product(String code, double price) {
+        this.code = code;
+        this.price = price;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getCode() {
+        return code;
+    }
+
+    public void setCode(String code) {
+        this.code = code;
+    }
+
+    public double getPrice() {
+        return price;
+    }
+
+    public void setPrice(double price) {
+        this.price = price;
+    }
+}
diff --git a/...pa-3/src/main/java/com/baeldung/hibernate/dirtychecking/repository/ProductRepository.java b/...pa-3/src/main/java/com/baeldung/hibernate/dirtychecking/repository/ProductRepository.java
@@ -0,0 +1,13 @@
+package com.baeldung.hibernate.dirtychecking.repository;
+
+import java.util.Optional;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+import com.baeldung.hibernate.dirtychecking.entity.Product;
+
+@Repository
+public interface ProductRepository extends JpaRepository<Product, Long> {
+    Optional<Product> findByCode(String code);
+}
diff --git a/persistence-modules/hibernate-jpa-3/src/main/resources/application-dirtychecking.yml b/persistence-modules/hibernate-jpa-3/src/main/resources/application-dirtychecking.yml
@@ -0,0 +1,3 @@
+spring:
+  jpa:
+    show-sql: true
diff --git a/...rnate-jpa-3/src/test/java/com/baeldung/hibernate/dirtychecking/ProductRepositoryTest.java b/...rnate-jpa-3/src/test/java/com/baeldung/hibernate/dirtychecking/ProductRepositoryTest.java
@@ -0,0 +1,55 @@
+package com.baeldung.hibernate.dirtychecking;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.ActiveProfiles;
+import org.springframework.transaction.annotation.Transactional;
+
+import com.baeldung.hibernate.dirtychecking.entity.Product;
+import com.baeldung.hibernate.dirtychecking.repository.ProductRepository;
+
+import jakarta.persistence.EntityManager;
+
+@SpringBootTest
+@ActiveProfiles("dirtychecking")
+public class ProductRepositoryTest {
+
+    @Autowired
+    private ProductRepository productRepository;
+
+    @Autowired
+    private EntityManager entityManager;
+
+    @Test
+    @Transactional
+    void givenProduct_whenModifiedWithoutSave_thenAssertChangesPersisted() {
+        Product product = new Product("LOREM", 100.00);
+        productRepository.save(product);
+
+        product.setPrice(80.00);
+        entityManager.flush();
+        entityManager.clear();
+
+        Product updatedProduct = productRepository.findByCode("LOREM").orElseThrow(RuntimeException::new);
+        assertEquals(80.00, updatedProduct.getPrice());
+    }
+
+    @Test
+    @Transactional
+    void givenDetachedProduct_whenModifiedWithoutSave_thenAssertChangesNotPersisted() {
+        Product product = new Product("LOREM", 100.00);
+        productRepository.save(product);
+
+        entityManager.detach(product);
+        product.setPrice(80.00);
+        entityManager.flush();
+        entityManager.clear();
+
+        Product updatedProduct = productRepository.findByCode("LOREM").orElseThrow(RuntimeException::new);
+        assertEquals(100.00, updatedProduct.getPrice());
+    }
+
+}