poprawki dot eksportu JSON, m.in. @JsonIgnore

PC37-SklepSpring/src/main/java/sklep/model/Customer.java

@@ -7,6 +7,8 @@ import jakarta.validation.constraints.Pattern;
 import java.util.LinkedHashSet;
 import java.util.Set;
 
+import com.fasterxml.jackson.annotation.JsonIgnore;
+
 @Entity
 @Table(name = "customers")
 public class Customer {
@@ -32,6 +34,9 @@ public class Customer {
     private String city;
 
     @OneToMany(mappedBy = "customer")
+    @JsonIgnore
+    // W danych klienta zwracanych w JSONie nie będzie listy zamówień.
+    // Można by pomyśleć o stworzeniu dwóch wersji tej klasy - jedna z zamówieniami, jedna bez.
     private Set<Order> orders = new LinkedHashSet<>();
 
     public String getCustomerEmail() {

PC37-SklepSpring/src/main/java/sklep/model/Order.java

@@ -16,7 +16,7 @@ public class Order {
     @Column(name = "order_id", nullable = false)
     private Integer id;
 
-    @ManyToOne(fetch = FetchType.LAZY, optional = false)
+    @ManyToOne( optional = false)
     @JoinColumn(name = "customer_email", nullable = false)
     private Customer customer;
 

PC37-SklepSpring/src/main/java/sklep/model/OrderProduct.java

@@ -5,6 +5,8 @@ import jakarta.validation.constraints.Min;
 
 import org.hibernate.annotations.ColumnDefault;
 
+import com.fasterxml.jackson.annotation.JsonIgnore;
+
 import java.math.BigDecimal;
 
 @Entity
@@ -16,6 +18,7 @@ public class OrderProduct {
     @MapsId("orderId")
     @ManyToOne(fetch = FetchType.LAZY, optional = false)
     @JoinColumn(name = "order_id", nullable = false)
+    @JsonIgnore
     private Order order;
 
     @MapsId("productId")

PC37-SklepSpring/src/main/resources/application.properties

@@ -6,4 +6,6 @@ spring.datasource.url=jdbc:postgresql://localhost/sklep
 spring.datasource.username=alx
 spring.datasource.password=abc123
 
+spring.jackson.serialization.FAIL_ON_EMPTY_BEANS=false
+
 alx.photo_dir=/home/patryk/sklep/foto