When you use activity diagrams to
model the flow of information, you can create actions that define variables
and their data. You can use variable actions to add, read, or remove variable
values, as well as to clear all values from the variable values list. You
can use variable actions as an alternative or a complement to modeling with
object flows, and they are not subject to control flows or other object-related
constraints.
Before you begin
An activity diagram must be open in the
Modeling
perspective.
About this task
To add a variable action:
Procedure
- In the Palette, under Actions, click Variable
Actions.
- In the diagram editor, click anywhere in the activity diagram.
- Complete one of the following steps:
- To add a variable value, click Create Add Variable Value
Action.
- To reference a variable value, click Create Read Variable
Action.
- To remove a variable value, click Create Remove Variable
Value Action.
- To remove all variable values, click Create Clear Variable
Action.
- To specify the target variable, complete one of the following steps:
- Type a name for the variable action.
Results
The variable action is added to the diagram.