[es] - Rekurzivna class-a?

Arbitar2
Arbitar2
Serbia

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Profil

^{04.04.2007. u 12:03 - pre 207 meseci}

Pozdrav,

Pokusavam da resim problem u vezi baze.Radi se o EJB i SEAM teh. Imam Product klasu koju bih trebao rekurzivno povezati sa samom sobom.Recimo, da svaki product ima accessories , a accessories je product.Moj code izgleda ovako:

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;
    }
     */
}

Nakon deploy, JBoss kreira posebnu tabelu product_product u kojoj mi dozvoljava unosenje samo jednog istog accessorie (potrebno mi da ta vezna tabela ima ima dva kljuca npr.product_id i accessoies_id ,a ne samo jedan kao u mom slucaju).

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