FK question: PK versus instance type

[digulla]

Hello,

I'm wondering why jOOQ generates this code:

public void setLanguageId(java.lang.Long value) {
setValue(....tables.User.USER.LANGUAGE_ID, value);
}

instead of

public void setLanguage(Language value) {
setValue(....tables.User.USER.LANGUAGE_ID, value == null ? null : 
value.getId());
}

What's the design reasoning behind this?

Regards,

A. Digulla