Code:

Entity
@Table(name="product")
public class Product extends PersistableObject {

    private String productName;
    private String description;
    private double price;
    private double lastPrice=0;
    private String image=null;
    
    
    //private Product product;
    

   private List<ProductProperty> properties;
    private List<ProductBasket> productBaskets;
    private  Category category;
    private boolean active;
    private List<Promotion> promotions;
    private List<Product>accessories;
     
    public Product(){}
     
    public boolean isActive() {
        return active;
    }
    
    public void setActive(boolean active) {
        this.active = active;
    }
    
    /** 
     * get description name
     * @return String description
     */
    public String getDescription() {
        return description;
    }
    /** set description*/
    public void setDescription(String description) {
        this.description = description;
    }

    public String getProductName() {
        return productName;
    }

    public void setProductName(String productName) {
        this.productName = productName;
    }
    

    @OneToMany(mappedBy="product")
    public List<ProductBasket> getProductBaskets() {
        return productBaskets;
    }
    
    

    public void setProductBaskets(List<ProductBasket> productBaskets) {
        this.productBaskets =productBaskets;
    }
    


    public void setLastPrice(double lastPrice) {
        this.lastPrice = lastPrice;
    }    
    
    @OneToMany(mappedBy="product")
    public List<Promotion> getPromotions() {
        return promotions;
    }

    public void setPromotions(List<Promotion> promotions) {
        this.promotions = promotions;
    }
    
    
    @OneToMany
    public List<Product> getAccessories() {
        return accessories;
    }

    public void setAccessories(List<Product> accessories) {
        this.accessories = accessories;
    }
    
    /*
    @ManyToOne
    public Product getProduct() {
        return product;
    }

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