网上书店EJB实现

package com.bookstore.ejb3.bean; import java.io.Serializable; import java.util.HashSet; import java.util.Date; import java.util.Set; import javax.persistence.CascadeType; import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.FetchType; import javax.persistence.GeneratedValue; import javax.persistence.Id; import javax.persistence.JoinColumn; import javax.persistence.ManyToOne; import javax.persistence.OneToMany; import javax.persistence.OrderBy; import javax.persistence.Table; import javax.persistence.Temporal; import javax.persistence.TemporalType; import java.util.*; @SuppressWarnings("serial") @Entity @Table(name = "Orders") public class Order implements Serializable { private int hashCode = Integer.MIN_VALUE; private Integer orderid; private float amount; private Customer ower; private Set<OrderItem> orderItems = new HashSet<OrderItem>(); private Date createdate; private String Postcode; private String OrderStatus; private String Address; private String Phone; private String ConnectMan; public Order(){} public Order(float amount, Customer ower, Date createdate) { this.amount = amount; this.ower = ower; this.createdate = createdate; } public Order(float amount ,Customer customer,Set<OrderItem> orderItems,Date createdate,String Postcode,String OrderStatus,String Address,String Phone,String ConnectMan){ this.Address=Address; this.amount=amount; this.ower=customer; this.orderItems=orderItems; this.createdate=createdate; this.Postcode=Postcode; this.OrderStatus=OrderStatus; this.Phone=Phone; this.ConnectMan=ConnectMan; } @Id @GeneratedValue public Integer getOrderid() { return orderid; } public void setOrderid(Integer orderid) { this.orderid = orderid; } @Column(nullable=false) public Float getAmount() { return amount; } public void setAmount(Float amount) { this.amount = amount; } @ManyToOne(cascade=CascadeType.ALL,optional=false) @JoinColumn(name = "customer_id") public Customer getOwer() { return ower; } public void setOwer(Customer ower) { this.ower = ower; } @OneToMany(mappedBy="order",cascade = CascadeType.ALL, fetch = FetchType.LAZY) @OrderBy(value = "id ASC") public Set<OrderItem> getOrderItems(){ return orderItems; } public void setOrderItems(Set<OrderItem> orderItems) { this.orderItems = orderItems; } public void addOrderItem(OrderItem orderitem) { if (!this.orderItems.contains(orderitem)) { this.orderItems.add(orderitem); orderitem.setOrder(this); } } public void removeOrderItem(OrderItem orderitem) { orderitem.setOrder(null); this.orderItems.remove(orderitem); } @Temporal(value=TemporalType.TIMESTAMP) public Date getCreatedate() { return createdate; } public void setCreatedate(Date createdate) { this.createdate = createdate; } public boolean equals (Object obj) { if (null == obj) return false; if (!(obj instanceof Order)) return false; else { Order mObj = (Order) obj; if (null == this.getOrderid() || null == mObj.getOrderid()) return false; else return (this.getOrderid().equals(mObj.getOrderid())); } } public int hashCode () { if (Integer.MIN_VALUE == this.hashCode) { if (null == this.getOrderid()) return super.hashCode(); else { String hashStr = this.getClass().getName() + ":" + this.getOrderid().hashCode(); this.hashCode = hashStr.hashCode(); } } return this.hashCode; } public int getHashCode() { return hashCode; } public void setHashCode(int hashCode) { this.hashCode = hashCode; } @Column(nullable=false,length=12) public String getPostcode() { return Postcode; } public void setPostcode(String postcode) { Postcode = postcode; } @Column(nullable=false,length=12) public String getOrderStatus() { return OrderStatus; } public void setOrderStatus(String orderStatus) { OrderStatus = orderStatus; } @Column(nullable=false,length=50) public String getAddress() { return Address; } public void setAddress(String address) { Address = address; } @Column(nullable=false,length=12) public String getPhone() { return Phone; } public void setPhone(String phone) { Phone = phone; } @Column(nullable=false,length=32) public String getConnectMan() { return ConnectMan; } public void setConnectMan(String connectMan) { ConnectMan = connectMan; } }