Transition Properties

You can modify an object's properties from its property sheet. To open an transition property sheet, double-click its diagram symbol or its Browser entry in the Transitions folder.

The General Tab contains the following properties:

Property	Description
Name	Specifies the name of the item, which should be clear and meaningful, and should convey the item's purpose to non-technical users. Displays a read-only value named after both extremities of the transition.
Code	Specifies the technical name of the object, which is used for generating code or scripts. Displays a read-only value named after both extremities of the transition.
Comment	Descriptive comment for the object.
Source	Where the transition starts from. Use the tools to the right of the list to create, browse for, or view the properties of the currently selected object.
Destination	Where the transition ends on. Use the tools to the right of the list to create, browse for, or view the properties of the currently selected object.
Stereotype	Extends the semantics of the object beyond the core UML definition.
Flow type	Represents a condition that can be attached to the transition. You can choose between the following default types or create your own: Success – Defines a successful flow Timeout – Defines a timeout limit Exception – Represents an exception case

Condition Tab

The Condition tab contains the following properties:

Property	Description
Alias	Short name for the condition, to be displayed next to its symbol in the diagram.
Condition (text box)	Specifies a condition to be evaluated to determine whether the transition should be traversed. You can enter any appropriate information in this field, as well as open, insert and save text files.

Trigger Tab

The Trigger tab contains the following properties:

Property	Description
Trigger event	Specifies the event (see Events (OOM)) that triggers the transition. You can click the Properties tool beside this box to display the event property sheet. It is available only for transitions coming from a state or a start and is not editable in other cases. When you define a trigger event, the inverse relationship is displayed in the Triggered Objects tab of the corresponding event property sheet. The Triggered Objects tab lists transitions that the event can trigger.
Event arguments	Specifies a comma-separated list of event arguments (arg1, arg2,...).
Trigger action	Specifies the action to execute when the transition is triggered.
Operation	Read-only list that lists operations of the classifier associated with the state that is the source of the transition. It allows you to specify the action implementation using an operation. It is grayed and empty when the classifier is not a class
Operation arguments	Arguments of an event defined on an operation