Creating Activations

To indicate an actor answers to messages, you can create an activation (execution specification) and insert it on the lifeline of an actor placed in a selected sequence diagram view.

This task shows you how to:

Create Activations in Sequence Diagram

To indicate an actor answers to messages, you can create an activation (execution specification) and insert it on the lifeline of an actor placed in a selected sequence diagram view.

Before you begin:
  • Create a sequence diagram view and activate it. For more information about the creation of sequence diagram, see Creating Sequence Diagrams.
    Tip: From the tree, double-click a sequence diagram view to activate it.
  • Insert an actor. For more information, see Inserting a New Actor.
  1. From the Sequence Diagram section of the action bar, click Create New Activation.
  2. To position the activation on an actor in view, click the lifeline of the associated actor.

    Tip: You can change the position of an activation created on a selected lifeline by selecting the activation and move it up and down the lifeline of the associated actor.

The activation is created on the selected lifeline of the associated actor in the active sequence diagram view.

Create Activations in Hybrid Sequence Diagram

An hybrid sequence diagram is a sequence diagram where functions are allocated to logical components. For this type of sequence diagram, the label of activation is the instance name of the allocated function. The activation can come from an implemented function or from a child of this function.

Before you begin:
  1. Double-click the sequence diagram created under the Logical node.
  2. In the Sequence Diagram section of the action bar, click Create New Activation.
  3. To position the activation on an actor, click the lifeline of the associated actor.
  4. In the Activation PLM Object dialog box, select the function allocated to the logical actor.
    The activation is placed. Its label displayed the function instance allocated to the logical actor.

    Graphically, the implemented function is represented by a rectangle. If you have selected a child of the implemented function, the activation is represented by two nested rectangles.