Fragment types: ref, assert, loop, break, alt, opt, negĪlternative multiple fragments: only the one whose condition is true will execute.The fragment operator (in the top left cornet) indicates the type of fragment.A sequence fragment is represented as a box, called a combined fragment, which encloses a portion of the interactions within a sequence diagram. Sequence fragments make it easier to create and maintain accurate sequence diagrams UML 2.0 introduces sequence (or interaction) fragments.The top and the bottom of the rectangle are aligned with the initiation and the completion time respectively. It represents the period during which an element is performing an operation.It shows as tall, thin rectangle on a lifeline).Focus of control: also called execution occurrence, an execution occurrence.An Event is any point in an interaction where something occurs.A comment carries no semantic force, but may contain information that is useful to a modeler. Duration message shows the distance between two time instants for a message invocation.Ī note (comment) gives the ability to attach various remarks to elements.Destroy message is a kind of message that represents the request of destroying the lifecycle of target lifeline.Create message is a kind of message that represents the instantiation of (target) lifeline.It's target points to an activation on top of the activation where the message was invoked from. Recursive message is a kind of message that represents the invocation of message of the same lifeline.Self message is a kind of message that represents the invocation of message of the same lifeline.Return message is a kind of message that represents the pass of information back to the caller of a corresponded former message.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |