On the Select Conveyed Classifier dialog, create or select the
Exchange Element that is the Command element's conveyed classifier.
◦ From an
SV-10c Systems Event-Trace Description, click the Command Message toolbar button, in line with the required Statement click the source lifeline, and then click the destination lifeline.
▪ For a Service Channel: the Resource Role elements that own the source and destination
Service Port (Requires) and
Service Port (Provides) elements must use an Organization Type, Person Role Type or Responsibility as their type.
On the Select Conveyed Classifier dialog, create or select the
Exchange Element that is the Command element's conveyed classifier. On the context menu, click the command for the destination element.
From the dialogs that appear, select the conveyed classifier, the source element of the Command, and the destination element of the Command.
The direction of the Command is set to the direction of the Control Flow (System) or Object Flow (System).
You can convert a Command to a
Control or
Resource Exchange: right-click the Command, point to Convert To, and then click the required command.
Realizing Elements
A Command can be realized by many System Connector, System Interface, Control Flow (System) and Object Flow (System) elements.
To define that a Command is realized by an element:
◦ Drag the Command from a Modeler pane to the System Connector, System Interface, Control Flow (System), Object Flow (System) or Service Channel on a diagram.
◦ Drag the Command element's conveyed classifier from a Modeler pane to the System Connector, System Interface, Control Flow (System), Object Flow (System) or Service Channel on a diagram. On the Select Command dialog, select the Command.
◦ Right-click the System Connector, System Interface, Control Flow (System), Object Flow (System) or Service Channel, point to Links, point to Realized, and then click Command. From the dialog, select the Command elements that realize the element you right-clicked.
If you right-click the System Connector, System Interface, Control Flow (System), Object Flow (System) or Service Channel on a diagram, the Command elements you select are added to the diagram.
You can view which elements realize a Command on the Items tab of its Property Pages. In the Show Associated list, select Realization. Do not define realized elements through the Items tab.
When a Command is realized by an element, you can change the source and target elements of the Command to those of the realized element: on a diagram that shows the Command on the realized System Connector, System Interface, Control Flow (System), Object Flow (System) or Service Channel, right-click the Command, and then click Set Ends to Realizing Flow Ends.