Press CTRL+SHIFT+D, choose Sequence Diagram from the UML group, enter the name and click on the OK button.
Uml sequence diagram example plus#
Click on a Plus button in the tab switch bar, navigate to UML group and click on the UML Sequence Diagram item.You can create a new sequence diagram in multiple ways: It defines calls for invalid or incorrect states of system. It represents atomic calls which cannot be interleaved with another calls. critical - abbreviation for critical region.Operands can be called in any order, but the order of calls inside operands has to be preserved. par - abbreviation for parallel.It defines parts which can be executed parallely.It defines alternative paths of execution.
Interaction operator of the fragment can be one of these values: It is displayed as a rounded rectangle.Ī combined fragment combines interaction operands using an interaction operator. It models recursive calls.Ī found message is a message with a known participant of a receiving event, but with no or unknown sending participant.Ī lost message is a message with a known participant of an sending event, but with no or unknown receiving participant.Ī state invariant represents a constraint that has to be true in the time of execution. A deleted lifeline has to be ended with the X symbol (destruction occurrence).Ī self message is a call message that is sent from a lifeline execution occurrence to the same occurrence.Ī recursive message is a special case of a self-message. The delete messages are labeled with «destroy» stereotype. It is displayed as a line with a solid arrow pointing from a lifeline which calls a delete action to a lifeline which will be deleted. A create message is displayed as a dashed line with an open arrow pointing from a creating lifeline to the head of a newly created lifeline.Ī delete message performs disposing of an object. Reply message is displayed as a dashed line with an open arrow pointing from a replying lifeline to a calling lifeline.Ī create message instances a new object. The asynchronous call message is displayed as a line with an open arrow pointing from a calling lifeline to a called lifeline.Ī reply message sends a result of execution started by call message. Messages can be associated with a class operation.
Other calls of the source lifeline are not blocked, the next message is called immediately. Synchronous call message is displayed as a line with a solid arrow pointing from a calling lifeline to a called lifeline.Īn asynchronous call sends a message from a source lifeline to a target lifeline. An actor is rendered as a lifeline with a sticky man on the top in sequence diagrams.Īn execution occurrence represents a timespan from a lifetime of a participant when an operation is executed.Ī synchronous call sends a message from a source lifeline to a target lifeline while all other calls of the source lifeline are blocked. The line shows a time-ordered sequence of messages (from top to bottom).Īn actor represents an external participant. It is rendered as a box with a name and vertical line.
Uml sequence diagram example software#
Software Ideas Modeler offers tools for following elements of a sequence diagram:Ī lifeline is an element that represents an individual participant (object, actor, component, or process) in the interaction.
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