LineItem.java

package shopping;

public class LineItem {

    private int quantity;
    private int price;
    private Product product;
    private ShoppingCart shoppingCart;
    private Order order;
    private int object_id;

    public LineItem(int object_id, int quantity) {
        this.quantity = quantity;
        this.object_id = object_id;
    }

    public int getQuantity() {
        return quantity;
    }

    public Order getOrder() {
        return order;
    }

    public void setOrder(Order order) {
        this.order = order;
    }

    public void setQuantity(int quantity) {
        this.quantity = quantity;
    }

    public int getPrice() {
        return price;
    }

    public void setPrice(int price) {
        this.price = price;
    }

    public void setPrice(){
        if (this.product != null){
            price = product.getPrice() * this.quantity;
        }
    }

    public Product getProduct() {
        return product;
    }

    public void setProduct(Product product) {
        this.product = product;
    }

    public ShoppingCart getShoppingCart() {
        return shoppingCart;
    }

    public void setShoppingCart(ShoppingCart shoppingCart) {
        this.shoppingCart = shoppingCart;
    }

    public int getObjectId() {
        return object_id;
    }

    public void setObjectId(int object_id) {
        this.object_id = object_id;
    }

    @Override
    public String toString() {
        String fields = "Line Item, Quantity:" + quantity + ", Price:" + price + "\n";
        String Connected = product.getClass().getSimpleName() + ", " + shoppingCart.getClass().getSimpleName() + ", " + order.getClass().getSimpleName();
        return fields+Connected;
    }
}