package com.vrvwh.wh01.domain;import javax.persistence.*;
import java.util.HashSet;
import java.util.Set;/*** Created by Administrator on 2015/3/5.*/
@Entity
public class Employee {private long id;private String name;private Set<Phone> phones=new HashSet<Phone>();@Id@GeneratedValue(strategy = GenerationType.IDENTITY)public long getId() {return id;}public void setId(long id) {this.id = id;}@Columnpublic String getName() {return name;}public void setName(String name) {this.name = name;}

　　/**orphanRemoval=true配置表明删除无关联的数据。级联更新子结果集时此配置最关键
　　*/@OneToMany(mappedBy = "employee",cascade = CascadeType.ALL,orphanRemoval = true)public Set<Phone> getPhones() {return phones;}public void setPhones(Set<Phone> phones) {this.phones = phones;}
}

package com.vrvwh.wh01.domain;import javax.persistence.*;/*** Created by Administrator on 2015/3/5.*/
@Entity(name="Phones")
public class Phone {@Idprivate int phoneId;private int phoneNumber;@ManyToOne(cascade= CascadeType.ALL)private Employee employee;public int getPhoneId() {return phoneId;}public void setPhoneId(int phoneId) {this.phoneId = phoneId;}public int getPhoneNumber() {return phoneNumber;}public void setPhoneNumber(int phoneNumber) {this.phoneNumber = phoneNumber;}public Employee getEmployee() {return employee;}public void setEmployee(Employee employee) {this.employee = employee;}}

Employee employee=employeeService.query(1);employee.getPhones().clear();Phone phone1=new Phone();phone1.setPhoneNumber(132567);employee.getPhones().add(phone1);Phone phone2=new Phone();phone2.setPhoneNumber(132567);employee.getPhones().add(phone2);employeeService.update(employee);