eugenp · davidmartinezbarua · Sep 9, 2025 · Aug 16, 2025 · Aug 16, 2025 · Aug 30, 2025
diff --git a/persistence-modules/hibernate-jpa-2/src/main/java/com/baeldung/partitionkey/Controller.java b/persistence-modules/hibernate-jpa-2/src/main/java/com/baeldung/partitionkey/Controller.java
@@ -0,0 +1,29 @@
+package com.baeldung.partitionkey;
+
+import java.math.BigDecimal;
+import java.time.LocalDate;
+import java.util.List;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class Controller {
+
+    @Autowired
+    SalesRepository salesRepository;
+
+    @GetMapping
+    public ResponseEntity<List<Sales>> getAllPartition() {
+        return ResponseEntity.ok()
+          .body(salesRepository.findAll());
+    }
+
+    @GetMapping("add")
+    public ResponseEntity testPartition() {
+        return ResponseEntity.ok()
+          .body(salesRepository.save(new Sales(104L, LocalDate.of(2024, 02, 01), BigDecimal.valueOf(Double.parseDouble("8476.34d")))));
+    }
+}
diff --git a/...nate-jpa-2/src/main/java/com/baeldung/partitionkey/DemoHibernatePartitionApplication.java b/...nate-jpa-2/src/main/java/com/baeldung/partitionkey/DemoHibernatePartitionApplication.java
@@ -0,0 +1,14 @@
+package com.baeldung.partitionkey;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.PropertySource;
+
+@SpringBootApplication
+@PropertySource("classpath:application-partition.properties")
+public class DemoHibernatePartitionApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(DemoHibernatePartitionApplication.class, args);
+    }
+}
diff --git a/persistence-modules/hibernate-jpa-2/src/main/java/com/baeldung/partitionkey/Sales.java b/persistence-modules/hibernate-jpa-2/src/main/java/com/baeldung/partitionkey/Sales.java
@@ -0,0 +1,59 @@
+package com.baeldung.partitionkey;
+
+import java.math.BigDecimal;
+import java.time.LocalDate;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.Table;
+
+import org.hibernate.annotations.PartitionKey;
+
+@Entity
+@Table(name = "sales")
+public class Sales {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @PartitionKey
+    private LocalDate saleDate;
+
+    private BigDecimal amount;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public LocalDate getSaleDate() {
+        return saleDate;
+    }
+
+    public void setSaleDate(LocalDate saleDate) {
+        this.saleDate = saleDate;
+    }
+
+    public BigDecimal getAmount() {
+        return amount;
+    }
+
+    public void setAmount(BigDecimal amount) {
+        this.amount = amount;
+    }
+
+    public Sales(Long id, LocalDate saleDate, BigDecimal amount) {
+        this.id = id;
+        this.saleDate = saleDate;
+        this.amount = amount;
+    }
+
+    public Sales() {
+    }
+}
diff --git a/...ence-modules/hibernate-jpa-2/src/main/java/com/baeldung/partitionkey/SalesRepository.java b/...ence-modules/hibernate-jpa-2/src/main/java/com/baeldung/partitionkey/SalesRepository.java
@@ -0,0 +1,9 @@
+package com.baeldung.partitionkey;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface SalesRepository extends JpaRepository<Sales, Long> {
+
+}
diff --git a/persistence-modules/hibernate-jpa-2/src/main/resources/application-partition.properties b/persistence-modules/hibernate-jpa-2/src/main/resources/application-partition.properties
@@ -0,0 +1,5 @@
+spring.application.name=partitionKeyDemo
+# PostgreSQL connection properties
+spring.datasource.url=jdbc:postgresql://localhost:6000/salesTest
+spring.datasource.username=username
+spring.datasource.password=password
diff --git a/...ules/hibernate-jpa-2/src/test/java/com/baeldung/partitionkey/SalesControllerUnitTest.java b/...ules/hibernate-jpa-2/src/test/java/com/baeldung/partitionkey/SalesControllerUnitTest.java
@@ -0,0 +1,42 @@
+package com.baeldung.partitionkey;
+
+import static org.mockito.Mockito.when;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+import java.math.BigDecimal;
+import java.time.LocalDate;
+
+import org.junit.jupiter.api.Test;
+import org.mockito.ArgumentMatchers;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
+import org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration;
+import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest;
+import org.springframework.http.MediaType;
+import org.springframework.boot.test.mock.mockito.MockBean;
+import org.springframework.test.web.servlet.MockMvc;
+
+@WebMvcTest(controllers = Controller.class, excludeAutoConfiguration = { DataSourceAutoConfiguration.class, HibernateJpaAutoConfiguration.class })
+public class SalesControllerUnitTest {
+
+    @Autowired
+    private MockMvc mockMvc;
+
+    @MockBean
+    private SalesRepository salesRepository;
+
+    @Test
+    void givenValidSalesObject_whenAddingSales_thenPersistsAndReturnsCorrectly() throws Exception {
+        Sales sales = new Sales(104L, LocalDate.of(2024, 2, 1), BigDecimal.valueOf(8476.34d));
+        when(salesRepository.save(ArgumentMatchers.any(Sales.class))).thenReturn(sales);
+        mockMvc.perform(get("/add").contentType(MediaType.APPLICATION_JSON))
+          .andExpect(status().isOk())
+          .andExpect(content().contentType(MediaType.APPLICATION_JSON))
+          .andExpect(jsonPath("$.id").value(104L))
+          .andExpect(jsonPath("$.saleDate").value("2024-02-01"))
+          .andExpect(jsonPath("$.amount").value(8476.34));
+    }
+}