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The ElementGroup stereotype provides a lightweight mechanism for grouping various and possibly heterogeneous model elements by extending the capability of comments to refer to multiple annotated elements.

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SysMLv1.x: The ElementGroup stereotype
The Webel Parsing Analysis recipe for SysML1.x does not use the ElementGroup directly, it extends it as a user-defined Snippet stereotype with keyword «snippet» and with MagicDraw Customization.
The grouping of member elements by an ElementGroup is denoted here "logical" in the sense that it does not "steal ownership" of member elements (as opposed to "physical" ownership of elements in the model)
SysMLv1.x: An ElementGroup used for basic Parsing Analysis model element elicitation: Example 1
SysMLv1.x: An ElementGroup used for basic Parsing Analysis model element elicitation: Example 2
SysMLv1.x: Extending the ElementGroup for the Webel Parsing Analysis recipe (a quick look)
SysMLv1.x: Customizing the ElementGroup extensions for the Webel Parsing Analysis recipe (simplified)
SysMLv1.x: An ElementGroup in the model tree browser of MagicDraw/Cameo
Source
OMG Systems Modeling Language (SysML) 1.6
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About Object Management Group copyright in text extracts quoted from OMG specifications for educational purposes
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INFO
UML keywords
Comment
SysML keywords
ElementGroup
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The ElementGroup stereotype provides a lightweight mechanism for grouping various and possibly heterogeneous model elements by extending the capability of comments to refer to multiple annotated elements.
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For example, it can group elements that are associated with a particular release of the model, have a certain risk level, or are associated with a legacy design.
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For example, it can group elements that are associated with a particular release of the model, have a certain risk level, or are associated with a legacy design.
The semantics of ElementGroup is modeler-defined. In particular, the body text is not restricted. It can describe the grouped elements as well as elements or values related to the grouped elements.
Element groups are named using the name property.
The criterion for membership in an element group is specified by the body of the comment the stereotype is applied to. By grouping elements, the modeler asserts that the criterion of the group applies to the member.
Optionally, members of an element group can be ordered using its orderedMember property.
ElementGroups appear in diagrams as comments, and properties of the stereotype appear in the notation for stereotype properties.
Grouped elements are the annotated elements of the comment to which the stereotype is applied. This has several implications:
Element groups do not own their elements and thus an element can participate in an unlimited number of groups.
The elements in a group are identified by the modeler, as opposed to being the result of a query, as in views.
Element groups can be members of other element groups, but this does not imply that members of the first are members of the second.
ElementGroup::/criterion : String [0..1] Specifies the rationale for being member of the group. Adding an element to the group asserts that the criterion applies to this element. Derived from Comment::body. (derived)
ElementGroup::/member : Element [0..*] Set specifying the members of the group. Derived from Comment::annotatedElement. (derived)
ElementGroup::name : String [1] Name of the element group
ElementGroup::orderedMember : Element [0..*] Organize member according to an arbitrary order. Optional. (subsets: ElementGroup::member)
ElementGroup::/size : Integer [1] Number of members in the group. Derived. (derived)
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