BAEL-2513

Krzysztof Majewski · Krzysztof Majewski · commit a64bae63b8f5 · 2019-10-30T13:51:17.000+01:00
diff --git a/spring-boot-data/src/main/java/com/baeldung/fetchMode/Customer.java b/spring-boot-data/src/main/java/com/baeldung/fetchMode/Customer.java
@@ -0,0 +1,39 @@
+package com.baeldung.fetchMode;
+
+import org.hibernate.annotations.Fetch;
+import org.hibernate.annotations.FetchMode;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+import javax.persistence.OneToMany;
+import java.util.HashSet;
+import java.util.Set;
+
+@Entity
+public class Customer {
+
+    @Id
+    @GeneratedValue
+    private Long id;
+
+    @OneToMany(mappedBy = "customer")
+    @Fetch(value = FetchMode.SELECT)
+    private Set<Order> orders = new HashSet<>();
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Set<Order> getOrders() {
+        return orders;
+    }
+
+    public void setOrders(Set<Order> orders) {
+        this.orders = orders;
+    }
+}
diff --git a/spring-boot-data/src/main/java/com/baeldung/fetchMode/CustomerController.java b/spring-boot-data/src/main/java/com/baeldung/fetchMode/CustomerController.java
@@ -0,0 +1,50 @@
+package com.baeldung.fetchMode;
+
+import org.springframework.transaction.annotation.Transactional;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.Set;
+
+@RestController
+public class CustomerController {
+
+    private final CustomerRepository customerRepository;
+    private final OrderRepository orderRepository;
+
+    public CustomerController(CustomerRepository customerRepository, OrderRepository orderRepository) {
+        this.customerRepository = customerRepository;
+        this.orderRepository = orderRepository;
+    }
+
+    @GetMapping("test/{id}")
+    @Transactional
+    public Set<Order> getCustomerOrders(@PathVariable Long id) {
+        Customer customer = customerRepository.findById(id).get();
+        return customer.getOrders();
+    }
+
+    @GetMapping("save")
+    @Transactional
+    public Long saveNewCustomer() {
+        Customer customer = new Customer();
+        customer = customerRepository.save(customer);
+
+        Order order1 = orderRepository.save(new Order("order 1", customer));
+        Order order2 = orderRepository.save(new Order("order 2", customer));
+        Order order3 = orderRepository.save(new Order("order 3", customer));
+        Order order4 = orderRepository.save(new Order("order 4", customer));
+        Order order5 = orderRepository.save(new Order("order 5", customer));
+
+        customer.getOrders().add(order1);
+        customer.getOrders().add(order2);
+        customer.getOrders().add(order3);
+        customer.getOrders().add(order4);
+        customer.getOrders().add(order5);
+
+        Customer save = customerRepository.save(customer);
+        return save.getId();
+    }
+
+}
diff --git a/spring-boot-data/src/main/java/com/baeldung/fetchMode/CustomerRepository.java b/spring-boot-data/src/main/java/com/baeldung/fetchMode/CustomerRepository.java
@@ -0,0 +1,6 @@
+package com.baeldung.fetchMode;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface CustomerRepository extends JpaRepository<Customer, Long> {
+}
diff --git a/spring-boot-data/src/main/java/com/baeldung/fetchMode/Order.java b/spring-boot-data/src/main/java/com/baeldung/fetchMode/Order.java
@@ -0,0 +1,50 @@
+package com.baeldung.fetchMode;
+
+import javax.persistence.*;
+
+@Entity
+public class Order {
+
+    @Id
+    @GeneratedValue
+    private Long id;
+
+    private String name;
+
+    @ManyToOne
+    @JoinColumn(name = "customer_id")
+    private Customer customer;
+
+    public Order() {
+
+    }
+
+    public Order(String name, Customer customer) {
+        this.name = name;
+        this.customer = customer;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Customer getCustomer() {
+        return customer;
+    }
+
+    public void setCustomer(Customer customer) {
+        this.customer = customer;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+}
diff --git a/spring-boot-data/src/main/java/com/baeldung/fetchMode/OrderRepository.java b/spring-boot-data/src/main/java/com/baeldung/fetchMode/OrderRepository.java
@@ -0,0 +1,6 @@
+package com.baeldung.fetchMode;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface OrderRepository extends JpaRepository<Order, Long> {
+}
