如何在Hibernate中检查两列数据组合的相等性？

Question

@Entity

public class Employee{

private String Id;
private String preId;

}

I've a Entity like above and i want to get the search results on the combination of both fields. (preId+Id)

是否可以通过Restrictions eq方法验证上述字段组合与我的搜索输入值？

任何帮助将不胜感激......

Answer 1

是的，你可以。您可以为Id和preId添加2个限制，如下所示。

public Employee getEmployee(Session session) {
    Criteria crt = session.createCriteria(Employee.class);
    crt.add(Restrictions.eq("Id", "1"));
    crt.add(Restrictions.eq("preId", "123"));
    return (Employee ) crt.uniqueResult();
}