UML25 — Clarification of imports

Type: Clarification of imports
The following are not obvious:
1) Can a non-package namespace, such as a class, have a package
import relationship to a package? From the metamodel yes

2) Can a namespace, of any type, do a element import of a package?
From the metamodel yes

3) Can a package do an element import of a attribute?
From the metamodel yes

It is not clear why these things are claimed to be “not obvious”. As shown in Figure 7.5 and described in the text of
subclause 7.4.3, any Namespace (including a Class) can have a PackageImport of any Package and any Namespace
can have an ElementImport of a Package. In the former case, the the members of the Package are imported, while, in
the latter case, only the Package is imported.
A Package cannot import an attribute, however, since attributes are Properties, which are not PackageableElements.
Per Figure 7.5 and subclause 7.4.3, only PackageableElements may be imported.
Disposition: Closed - No Change