软件简介

DAO Fusion 是一个轻量级的，但功能完整具备可扩展性的实现了 DAO 设计模式的 Java 框架，基于 JPA 和 Hibernate 构建。

示例代码：

@Entity  
@Table(name = "customers",  
    uniqueConstraints = {@UniqueConstraint(columnNames = {"firstName", "lastName"})})  
public class Customer extends OidBasedMutablePersistentEntity {

    public static final String _FIRST_NAME = "firstName";  
    public static final String _LAST_NAME = "lastName";  
    public static final String _ORDERS = "orders";  
    public static final String _CONTACT_DETAILS = "contactDetails";

    public static final AssociationPath CONTACT_DETAILS = new AssociationPath(  
            new AssociationPathElement(_CONTACT_DETAILS));

    @Column(nullable = false, length = 16)  
    private String firstName;

    @Column(nullable = false, length = 16)  
    private String lastName;

    @OneToMany(mappedBy = "customer")  
    @Cascade(value = {CascadeType.SAVE_UPDATE, CascadeType.DELETE})  
    private List<Order> orders = new ArrayList<Order>();

    @OneToOne(optional = false)  
    @Cascade(value = {CascadeType.SAVE_UPDATE, CascadeType.DELETE})  
    private ContactDetails contactDetails;

    protected List<Order> getOrders() {  
        return orders;  
    }

    protected void setOrders(List<Order> orders) {  
        this.orders = orders;  
    }

    public void addOrder(Order order) {  
        orders.add(order);  
        order.setCustomer(this);  
    }

    public void removeOrder(Order order) {  
        orders.remove(order);  
        order.setCustomer(null);  
    }

    public List<Order> getUnmodifiableOrderList() {  
        return Collections.unmodifiableList(orders);  
    }

    // rest of the getters and setters go here

}