Id сущности

@Entity
@Table(name = "baskets")
public class Basket {
	@Id
	@GeneratedValue(strategy = GenerationType.IDENTITY)
	private long id;
	@ElementCollection
	@CollectionTable(name = "basket_products")
	@MapKeyJoinColumn(name="product_id")
	@MapKeyColumn(name = "product_id")
	@Column(name = "amount")
	private Map<Product, Double> products;
	@NotNull
	@ManyToOne
	@JoinColumn(name="username")
	private User user;
	@NotNull
	private LocalDateTime date;
	
	public Basket() {
		this.date=LocalDateTime.now();
		this.products = new HashMap<Product, Double>();
		System.out.println("ID"+this.id);
	}

	public long getId() {
		return id;
	}

	public Map<Product, Double> getProducts() {
		return products;
	}

	public void setProducts(Map<Product, Double> products) {
		this.products = products;
	}

	public User getUser() {
		return user;
	}

	public void setUser(User user) {
		this.user = user;
	}

	public LocalDateTime getDate() {
		return date;
	}

	public void setDate(LocalDateTime date) {
		this.date = date;
			
	}
	
	public boolean containsProduct(long id) {
		for (Map.Entry<Product,Double> entry : this.getProducts().entrySet()) {
			if (entry.getKey().getId()==id) return true;
		}

		return false;
	}
	
	public boolean contains(String name) {
		for (Map.Entry<Product,Double> entry : this.getProducts().entrySet()) {
			if (entry.getKey().getName().equals(name)) return true;
		}

		return false;
	}
	
	public Product findByName(String name) {
		for (Map.Entry<Product,Double> entry : this.getProducts().entrySet()) {
			if (entry.getKey().getName().equals(name)) {
				return entry.getKey();
			}
		}
		return null;

	}
	
	public void removeProduct(String name) {
		this.products.remove(this.findByName(name));
	}
	
	@Override
	public String toString() {
		StringBuilder prod = new StringBuilder();
		for (Map.Entry<Product, Double> entry : this.products.entrySet())
				{
				    prod.append(entry.getKey()).append(" ").append(entry.getValue());
				}
		
		return prod.toString();
	}
	
	

}