java - 继承类的不同验证策略

Question

如何为此类配置不同的验证策略：

   @MappedSuperClass
    public class Base{
       @Size(min=4)
       String name;
   }

所以：

public class Child extends Base{
   @NotBlank
   String surname;
}

如果我创建基类，我想关闭验证。但是，如果我创建子类，我想打开验证。

我怎么能这样？

更新

我使用 spring 类验证BindingResult

Answer 1

您可以定义两个验证组，例如 BaseGroup 和 ChildGroup。然后，您始终可以仅使用 ChildGroup 验证您的对象，因此在基类的情况下，所有检查都将被省略。

更新。例子：

 @MappedSuperClass
 public class Base{
    @Size(min=4, groups = BaseGroup.class)
    String name;
}

public class Child extends Base{
    @NotBlank(groups = ChildChecks.class)
    String surname;
} 

Base base = new Base();
Set<ConstraintViolation<Base>> baseViolations = validator.validate( base , ChildChecks.class);
// I suppose that this list will always be empty, because no constraints are defined for ChildChecks group in Base class

Child child = new Child();
Set<ConstraintViolation<Child>> childViolations = validator.validate( child,  BaseGroup.class, ChildChecks.class );
// All checks wil be verified here, because we use two groups