Loops

Loop detection simplifies UML sequence diagrams by summarizing repeating traces into a loop symbol.

Note Loops are extensions to UML Sequence Diagrams and are not supported by the UML standard.

A loop is represented as shown below:

A tag displays the name of the loop and the number of executions.

The loop is linked to its source file. In the UML/SD Viewer, click a loop to open the Text Editor at the corresponding line in the source code.

To configure Runtime Tracing to detect loops:

From the Project Explorer, select the highest level node to which you want to apply the option, such as the Workspace.
Right-click the node, and select Settings... from the pop-up menu.
In the Configuration Settings dialog, select the Runtime Tracing node, and Trace Control.
From the options box, set the Automatic Loop Detection to Yes.
Click OK.