IMHO, this is an example of leaky abstraction. I don't know and I don't want to know why I can't simply write.

如我拙见，这有一个leaky abstraction的例子。

youdao

When a DAO operation fails the SQLException or other persistence technology-specific exception should be translated to ensure that DAO interfaces do not provide a leaky abstraction

当DAO操作失败时，SQLException或者其他特殊持久化技术的异常应该被翻译，以确保DAO接口不会有漏掉的抽象。

youdao

Unfortunately, the abstraction is leaky: in my ZIP code validator, for example, I would have liked to use regular expressions to perform the check.

不幸的是，抽象是有漏洞的：例如，在我的ZIP代码验证器中，本想使用正则表达式执行检测。

youdao