我怀疑在jsf中建立这种关系，当我只有一对一这样的雇主和雇员时，我使用双向关系收集级联和懒惰，当我想编辑雇主时，雇主数据库我点击并转到页面编辑，它带有雇主和他们的雇员，可以修改雇主的数据，添加或删除员工，我有一个按钮，使保存节省雇主和员工级联。
@ Entity
{
public class Employer
@ Id
private int id;
@ OneToMany ( mappedBy = " employer " , cascade = Cascade.TYPE.ALL )
private List <Employee> employees ;
...
}
@ Entity
public class Employee {
@ ManyToOne
Employer private employer ;
...
}
@ ManagedBean
private Class MyMB {
private List <Employer> Employers ;
Employe private employer ;
private Employee employee ;
public void remove () {
employe.getEmployees.remove ( employee ) ;
}
public void add ( ) {
employer.getEmployees.add ( employee ) ;
}
public void save ( ) {
someService.persist ( employe ) ;
employes service.findAll = ();
}
}
acedito远没有问题，我最大的问题是当一个实体只有一个细节时 15个细节，例如我使用单向关系？应该单独购买我的收藏品吗？ 我保存详细信息separamente master？正在考虑使用标签，每个标签到一个细节 例如，为雇员保存和保存雇主
@ ManagedBean
private Class MyMB {
private List <Employer> Employers ;
Employe private employer ;
private Employee employee ;
private List <Employees> employees ;
public void selectEmployer ( ) {
employer row.getData( ) ;
employees = employeeService.findEmployess ( employer ) ;
}
public void remove () {
employeeService.remove ( employee ) ;
employees = employeeService.findEmployess( employer ) ;
}
public void add ( ) {
employeeService.add ( employee ) ;
employees = employeeService.findEmployess ( employer ) ;
}
public void save ( ) {
someService.persist ( employe ) ;
employes = service.findAll();
}
}