PurchaseOrder Update

src/main/java/org/example/petshopdesktop/DTOs/PurchaseOrderDTO.java

@@ -0,0 +1,57 @@
+package org.example.petshopdesktop.DTOs;
+
+public class PurchaseOrderDTO {
+
+    private int purchaseOrderId;
+    private String supplierName;
+    private String productName;
+    private int quantity;
+    private double unitCost;
+    private String orderDate;
+    private String status;
+
+    public PurchaseOrderDTO(int purchaseOrderId,
+                            String supplierName,
+                            String productName,
+                            int quantity,
+                            double unitCost,
+                            String orderDate,
+                            String status) {
+
+        this.purchaseOrderId = purchaseOrderId;
+        this.supplierName = supplierName;
+        this.productName = productName;
+        this.quantity = quantity;
+        this.unitCost = unitCost;
+        this.orderDate = orderDate;
+        this.status = status;
+    }
+
+    public int getPurchaseOrderId() {
+        return purchaseOrderId;
+    }
+
+    public String getSupplierName() {
+        return supplierName;
+    }
+
+    public String getProductName() {
+        return productName;
+    }
+
+    public int getQuantity() {
+        return quantity;
+    }
+
+    public double getUnitCost() {
+        return unitCost;
+    }
+
+    public String getOrderDate() {
+        return orderDate;
+    }
+
+    public String getStatus() {
+        return status;
+    }
+}

src/main/java/org/example/petshopdesktop/database/PurchaseOrderDB.java

@@ -1,4 +1,52 @@
 package org.example.petshopdesktop.database;
 
+import javafx.collections.FXCollections;
+import javafx.collections.ObservableList;
+import org.example.petshopdesktop.DTOs.PurchaseOrderDTO;
+
+import java.sql.*;
+
 public class PurchaseOrderDB {
-}
+
+    public static ObservableList<PurchaseOrderDTO> getPurchaseOrders()
+            throws SQLException {
+
+        ObservableList<PurchaseOrderDTO> list =
+                FXCollections.observableArrayList();
+
+        Connection conn = ConnectionDB.getConnection();
+
+        String sql = """
+            SELECT po.purchaseOrderId,
+                   s.supCompany AS supplierName,
+                   p.prodName AS productName,
+                   poi.quantity,
+                   poi.unitCost,
+                   po.orderDate,
+                   po.status
+            FROM purchaseOrder po
+            JOIN supplier s ON po.supId = s.supId
+            JOIN purchaseOrderItem poi ON po.purchaseOrderId = poi.purchaseOrderId
+            JOIN product p ON poi.prodId = p.prodId
+        """;
+
+        Statement stmt = conn.createStatement();
+        ResultSet rs = stmt.executeQuery(sql);
+
+        while (rs.next()) {
+
+            list.add(new PurchaseOrderDTO(
+                    rs.getInt("purchaseOrderId"),
+                    rs.getString("supplierName"),
+                    rs.getString("productName"),
+                    rs.getInt("quantity"),
+                    rs.getDouble("unitCost"),
+                    rs.getString("orderDate"),
+                    rs.getString("status")
+            ));
+        }
+
+        conn.close();
+        return list;
+    }
+}

src/main/java/org/example/petshopdesktop/models/PurchaseOrder.java

@@ -1,39 +1,35 @@
 package org.example.petshopdesktop.models;
 
-import javafx.beans.property.SimpleIntegerProperty;
-import javafx.beans.property.SimpleStringProperty;
-
 public class PurchaseOrder {
 
-    private SimpleIntegerProperty orderId;
-    private SimpleStringProperty supplierName;
-    private SimpleStringProperty orderDate;
-    private SimpleStringProperty status;
+    private int purchaseOrderId;
+    private int supId;
+    private String orderDate;
+    private String status;
 
-    public PurchaseOrder(int orderId,
-                         String supplierName,
+    public PurchaseOrder(int purchaseOrderId,
+                         int supId,
                          String orderDate,
                          String status) {
-
-        this.orderId = new SimpleIntegerProperty(orderId);
-        this.supplierName = new SimpleStringProperty(supplierName);
-        this.orderDate = new SimpleStringProperty(orderDate);
-        this.status = new SimpleStringProperty(status);
+        this.purchaseOrderId = purchaseOrderId;
+        this.supId = supId;
+        this.orderDate = orderDate;
+        this.status = status;
     }
 
-    public int getOrderId() {
-        return orderId.get();
+    public int getPurchaseOrderId() {
+        return purchaseOrderId;
     }
 
-    public String getSupplierName() {
-        return supplierName.get();
+    public int getSupId() {
+        return supId;
     }
 
     public String getOrderDate() {
-        return orderDate.get();
+        return orderDate;
     }
 
     public String getStatus() {
-        return status.get();
+        return status;
     }
 }