Uml Private Public

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Visibility allows to constrain the usage of a named element, either in namespaces or in access to the element. It is used with classes, packages, generalizations, element import, package import.
UML has the following types of visibility:
Note, that if a named element is not owned by any namespace, then it does not have a visibility.
A public element is visible to all elements that can access the contents of the namespace that owns it. Public visibility is represented by '+' literal.
A package element is owned by a namespace that is not a package, and is visible to elements that are in the same package as its owning namespace. Only named elements that are not owned by packages can be marked as having package visibility. Any element marked as having package visibility is visible to all elements within the nearest enclosing package (given that other owning elements have proper visibility). Outside the nearest enclosing package, an element marked as having package visibility is not visible. Package visibility is represented by '~' literal.
A protected element is visible to elements that have a generalization relationship to the namespace that owns it. Protected visibility is represented by '#' literal.
A private element is only visible inside the namespace that owns it. Private visibility is represented by '-' literal.
Operation executeQuery is public, isPoolable - protected,
getQueryTimeout - with package visibility, and clearWarnings is private.
If some named element appears to have multiple visibilities, for example, by being imported multiple times, public visibility overrides private visibility. If an element is imported twice into the same namespace, once using a public import and another time using a private import, resulting visibility is public.
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This document describes UML 2.5 and is based on OMG™ Unified Modeling Language™ (OMG UML®) 2.5 specification [UML 2.5 FTF - Beta 1].
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What are the UML 2.0 rules regarding private/protected functions on sequence diagrams? Do we show them (those functions) on those diagrams? Are they marked in any special way to indicate that they aren't public?
There is nothing we can do
There is nothing we can do 21.5k●2727 gold badges●9292 silver badges●185185 bronze badges
To add to S.Lotts answer above specifically the point about including non - public behavior in a Sequence Diagram, in general , i would say No. However, it depends on exactly what you are going to be using these UML diagrams for.
If you are using these UML diagrams for communicating your API's to external users, then definitely it does not make sense to expose the internals of your system to them.
However, if you are using these diagrams to communicate internally amongst your team, then sometimes, i have found it useful to communicate low level design by depicting it in a sequence diagram as it gives a clear indication to the developers as to what the implementation is supposed to be like. Again, this need for doing this is greatly dependent on the skill level of the person doing the implementation.
Jagmag
Jagmag 10.1k●11 gold badge●3131 silver badges●5656 bronze badges
Table 4: Marks for UML-supported visibility types
Generally, this is only for class diagrams.
In a sequence diagram you have a choice.
Show private function calls because you are documenting the implementation. You do this so the developer knows what code to write.
Do not show private function calls because you are documenting the interface. You do this so everyone knows how the classes collaborate to get work done.
S.Lott
S.Lott 363k●7575 gold badges●488488 silver badges●761761 bronze badges
I've read some time ago this article and it does't explain about private and protected fnc in sequence diagram. – There is nothing we can do Oct 23 '10 at 18:34
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Uml Private Public