Model Parts, Diagrams, Dictionary Items, and Properties > Dictionary items > Transition (dictionary item)
Transition (dictionary item)
For automation interface information about a Transition, see Transition (automation interface).
A Transition represents a relationship between two States, indicating that an object in the first State will enter the second State and perform specified actions when a specified event occurs.
Create a Transition through a State Diagram:
Click the Transition toolbar button, click the source state, and then click the destination state.
When you create a Transition, Modeler creates an Event Action Block for that Transition:
A Transition can own only one Event Action Bock. You can delete a Transition's Event Action Block: right-click the Transition, and then click Delete Event Action Block.
When you select a Transition on a State Diagram, the Property Pages show properties of the Transition's Event Action Block. To view properties of the Transition: right-click the Transition, and then click Transition Properties.
When used on a State Diagram, a Transition's notation is as follows.
For information about the View Options available for this symbol, see Transition view options — state diagram.
On a State Diagram, you can populate Transitions:
To populate Transitions between items shown on the diagram: right-click the background of the diagram, point to Populate, and then click Transitions.
To populate an item's Transitions: right-click the item, point to Populate, and then click Transitions. Modeler adds to the diagram any states required to show all the item's Transitions.
In the Dictionary pane, Transitions are listed in the UML\States folder.
In the Modeler panes, a short-cut symbol on the Transition's icon indicates that the item is a stub.
The following sections provide information about how a Transition is used in the model.
A Transition has most of the standard properties
Owned by
Atomic State
Concurrent State
Connection Point Reference
Entry State
Exit State
Final State
Fork State
History State
Initial State
Join State
Junction State
Sequential State
Submachine State
A Transition is owned jointly by the two items it links, that is, if either item is deleted the Transition is deleted as well. The access permissions you have to a Transition are determined by the access permissions you have to the item at the start end of the Transition.
Dependency — The Dependency is owned jointly by the Transition and the other associated item. The access permissions you have to a Dependency are determined by the access permissions of the dependent item.
Event Action Block
Defined in these parts of the model
State Model
Shown on these diagrams
State Diagram
Variant Diagram
Can be linked to these dictionary items
In addition to the owning items, a Transition can be linked to the following items.