View source for OCUP2F 04 Package Diagram

[[Category:Private]]
[[Category:OCUP2]]
==Module 6. Package Diagram⌘==
===References⌘===
* J.D. Baker, Model Organization with Packages and the Package Diagram, White Paper, May 2013. 

===Named Element, Namespace⌘===
*Named Element represents an element that '''may''' have a name and a visibility
*Namespace is a named element that can own other named elements 
* Each named element may be owned by at most one namespace
* Namespace provides a container for named elements
* All the members of a '''namespace''' are distinguishable within it

===Package⌘===
[[File:UMLPackage.png]]
* Package is used to group elements, and provides a namespace for the grouped elements.
* A Packageable Element is a Named Element that may be owned directly by a Package.
* The visibility of a packagedElement may be indicated by preceding the name by a visibility symbol (‘+’ for public and ‘-’ for private).
* <!-- [[File:ClipCapIt-141024-151711.PNG]]  -->Default Packageable Element visibility is public.
* qualified name:
 package name::element name
====Package nesting⌘====
[[File:ClipCapIt-160105-205328.PNG]]

===Package relationship⌘===
[[File:ClipCapIt-141024-152524.PNG]]
* Some elements from package B depends on some elements from package A

===Package Import, Access⌘===
[[File:PackageImportAccess.png]]

A package import is defined as a directed relationship that identifies a package whose members are to be imported by a
namespace.

Two types:
* «import» for a '''public''' package import
** transitive: if A imports B and B imports C then A indirectly imports C
* «access» for a '''private''' package import
** intransitive

====Package Import Example 1⌘====
[[File:PackageImportExample.png]]
* elements in Types are imported to ShoppingCart, and then further imported to WebShop
* elements of Auxiliary are only accessed from ShoppingCart, and cannot be referenced from WebShop
====Package Import Example 2⌘====
[[File:ClipCapIt-141024-161742.PNG]]

===Package vs Diagram Frame⌘===
[[File:ClipCapIt-161027-123906.PNG]]

===Model⌘===
[[File:ClipCapIt-141024-154505.PNG]]
* A Model is a description of a system - not only software and hardware but organizations and processes.
* It describes the system from a certain viewpoint, for a certain category of stakeholders, and at a certain level of abstraction.
* A Model is a Package.

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