Fix Ordering Items

00-backend/src/main/java/de/htwsaar/webshop/repository/entities/OrderItem.java

@@ -3,16 +3,14 @@ package de.htwsaar.webshop.repository.entities;
 import de.htwsaar.webshop.model.OrderItemModel;
 import jakarta.persistence.*;
 import jakarta.validation.constraints.Min;
-import lombok.AllArgsConstructor;
-import lombok.Getter;
-import lombok.NoArgsConstructor;
-import lombok.Setter;
+import lombok.*;
 import org.hibernate.annotations.OnDelete;
 
 @Getter
 @Setter
 @AllArgsConstructor
 @NoArgsConstructor
+@ToString
 @Entity
 @Table(name = "Order_Items")
 public class OrderItem {
@@ -25,14 +23,12 @@ public class OrderItem {
     @Min(value = 1, message = "Amount must be at least 1")
     private Integer amount;
 
-    @ManyToOne(fetch = FetchType.LAZY, optional = false, cascade = CascadeType.ALL, targetEntity = Order.class)
-    @MapsId("order_id")
+    @ManyToOne(fetch = FetchType.EAGER, optional = false, cascade = CascadeType.ALL, targetEntity = Order.class)
     @JoinColumn(name = "order_id", referencedColumnName = "id", nullable = false)
     @OnDelete(action = org.hibernate.annotations.OnDeleteAction.CASCADE)
     private Order order;
 
-    @ManyToOne(fetch = FetchType.LAZY)
-    @MapsId("articleId")
+    @ManyToOne(fetch = FetchType.EAGER)
     @JoinColumn(name = "article_id", referencedColumnName = "id", nullable = false)
     @OnDelete(action = org.hibernate.annotations.OnDeleteAction.SET_NULL)
     private Article article;

00-backend/src/main/java/de/htwsaar/webshop/service/impl/OrderServiceImpl.java

@@ -2,6 +2,7 @@ package de.htwsaar.webshop.service.impl;
 
 import de.htwsaar.webshop.model.OrderItemModel;
 import de.htwsaar.webshop.model.OrderModel;
+import de.htwsaar.webshop.repository.OrderItemRepository;
 import de.htwsaar.webshop.repository.OrderRepository;
 import de.htwsaar.webshop.repository.entities.Order;
 import de.htwsaar.webshop.repository.entities.OrderItem;
@@ -13,9 +14,11 @@ import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
+import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.stream.Collectors;
 
 @Service
 @Slf4j
@@ -23,12 +26,14 @@ public class OrderServiceImpl implements OrderService {
     private final OrderRepository orderRepository;
     private final CustomerService customerService;
     private final ArticleService articleService;
+    private final OrderItemRepository orderItemRepository;
 
     @Autowired
-    public OrderServiceImpl(OrderRepository orderRepository, CustomerService customerService, ArticleService articleService) {
+    public OrderServiceImpl(OrderRepository orderRepository, CustomerService customerService, ArticleService articleService, OrderItemRepository orderItemRepository) {
         this.orderRepository = orderRepository;
         this.customerService = customerService;
         this.articleService = articleService;
+        this.orderItemRepository = orderItemRepository;
     }
 
     @Override
@@ -43,18 +48,24 @@ public class OrderServiceImpl implements OrderService {
 
     @Override
     public Order save(OrderModel model) {
-        Order order = new Order(
+        Order order = save(new Order(
                 model.getId(),
                 customerService.findById(model.getCustomerId()),
                 model.getTime(),
                 model.getStatus(),
                 null
-        );
-        order.setOrderItems(
-                model.getOrderItems().stream().map(oim -> this.from(oim, order)).toList()
-        );
+        ));
         log.info("Created Order from Model: {}", order);
-        return save(order);
+        order.setOrderItems(
+                model.getOrderItems().stream().map(oim -> this.from(oim, order)).collect(
+                        ArrayList::new,
+                        ArrayList::add,
+                        ArrayList::addAll
+                )
+        );
+        orderItemRepository.saveAll(order.getOrderItems());
+        log.info("Saved OrderItems");
+        return order;
     }
 
     OrderItem from(OrderItemModel model, Order order) {

00-backend/src/main/resources/db/initdb.sql

@@ -75,8 +75,8 @@ CREATE TABLE IF NOT EXISTS Orders
 (
     id          INTEGER PRIMARY KEY NOT NULL,
     customer_id INTEGER             NOT NULL,
-    time        INTEGER             NOT NULL, --unix millis or epoch, TBD
-    status      INTEGER             NOT NULL, --enum, see java or JS
+    time        INTEGER             NOT NULL, --unix millis
+    status      INTEGER             NOT NULL, --enum
     FOREIGN KEY (customer_id) REFERENCES Customers (id)
         ON DELETE CASCADE
         ON UPDATE CASCADE
@@ -88,7 +88,6 @@ CREATE TABLE IF NOT EXISTS Order_Items
     order_id   INTEGER NOT NULL,
     article_id INTEGER NOT NULL,
     amount     INTEGER NOT NULL,
-    -- art conf not needed
 
     CONSTRAINT cAmount CHECK (amount > 0),
     FOREIGN KEY (order_id) REFERENCES Orders (id)