P.S: this example shows 2 threads, but you can add more threads by adding more horizontal dashed lines.
#Sequence diagram parallel series
Object There are three ways of naming objects: Includes the object name and class name, for example: live class: class, in the time series diagram, with object. Graphically (see link), the combined fragment is represented as a boxed region in your sequence diagram, parallel sequences being separated by horizontal dashed lines (each of the slices would then correspond to one thread of execution. Actor System actors, which can be people, machines, other systems, subsystems used to represent in the temporal sequence diagram. state chart diagram, sequence diagram, collaboration diagram, activity diagram, component.
#Sequence diagram parallel how to
So how to show that interactions may happen in parallel ?įor representing parallelism, you would use a combined fragment introduced by the operator par. parallel applications through of a group of diagrams 5. In principle, the sequence of the interactions with your object is indicated by the vertical order of the messages. Our development team is working on larger improvements to the functionality of our UML markup tool, and we would love to hear your feedback on this. Several Models in Parallel, something that CASE tools will do automatically. As a workaround, I recommend manually adding a dotted line to separate parallel events once you have built your diagram using the markup tool. It could be thread instantiations directly, or it could be several objects that are created in the context of the two threads.īut this is not sufficient. Sequence diagrams are the most popular UML artifact for dynamic modeling. Graphically (see link), the combined fragment is represented as a boxed region in your sequence diagram, parallel sequences being separated by horizontal dashed lines (each of the slices would then correspond to one thread of execution. Similar to flowcharts, but the principal difference is notation that supports parallel behavior. You would also represent with a lifeline each threaded object that interact with your shared object. For representing parallelism, you would use a combined fragment introduced by the operator par.
So your object that is shared between the threads should appear once and only once in the diagram.
In a sequence diagram, a lifeline represents an individual participant in the interaction.
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