Base Class

[Viking]

Hello,

Could somebody explain to me the concept behind Base Classes in UML types, please?

Many thanks in advance, V.

[qwerty]

If you explain what you mean by UML types.

The only UML reference I found is on pp. 259:

The name of the Property typed by the extended metaclass is:

‘base_’ extendedMetaclassName

The name of the Property typed by the extension Stereotype (the ExtensionEnd) is:

‘extension_’ stereotypeName

Constraints are frequently added to Stereotypes. The above Properties may be used for expressing OCL navigations. For example, the following OCL expression states that a Home Interface shall not have attributes:

       self.base_Interface.ownedAttributes->isEmpty()

q.

[Viking]

If you explain what you mean by UML types.

Project > Settings > UML Types.

Here I implement stereotypes and shape scripts.

[Viking]

‘base_’ extendedMetaclassName

The name of the Property typed by the extension Stereotype (the ExtensionEnd) is:

‘extension_’ stereotypeName

Constraints are frequently added to Stereotypes. The above Properties may be used for expressing OCL navigations. For example, the following OCL expression states that a Home Interface shall not have attributes:

       self.base_Interface.ownedAttributes->isEmpty()

I am as confused as before :-)

[qwerty]

"UML types" in that context is a Sparx invention for predefined Stereotypes, Tagged Values and whatever one likes to appear in the cardinality drop downs.

q.

[KP]

Hello,

Could somebody explain to me the concept behind Base Classes in UML types, please?

Many thanks in advance, V.

If you want to define a global stereotype that extends Class, for example, you type "class" in the Base Class field. By global stereotype, I mean a stereotype that isn't part of a UML Profile. Most of the values for Base Class will be UML metaclasses, but there are some exceptions (e.g. "requirement") that you can pick up as you go.