![]() If you don't have the stop, it joins at the corresponding merge node. However I was unable to find a solution using the BETA version of PlantUML.Ĭheck the sample code I have given where you put the stop matters. This article will exhibit the process of creating a basic sequence diagram using an alternative combined fragment. It also models if-then-else logic in the sequence diagram. It is not meant to fully specify all the possible behaviors of all the involved occurrences: If you would show all the possible exceptions, your diagram would be unreadable due to combinatorial explosion. I think PUML relaxed it to make the diagram easy to understand (again, no time to go back to UML specs to confirm □).īTW, your diagram is missing the guard clause. The alternative combined fragment is utilized in a sequence diagram to define a section of a cluster of lifelines/actors, representing conditional flow. The sequence diagram aims to show how objects interact in a given scenario. Diagram Examples can be found in the Mermaid Live Editor, it is also. The sequence diagram is used primarily to show the interactions between objects in the sequential order that those interactions occur. ![]() Syntax, together with Deployment and Configuration constitute the whole of Mermaid. I am using UMLET to design the UML Sequence diagram for my system, i don't use the 'all in one' option but the simple one dragging and editing the diagram components, so far so good, but i need to create an alt fragment with 2 or 3 guard conditions, i can't findd examples or documentation about it, the fragment component in the program doesn't. The next sections dive deep into the syntax of each diagram type. You'll find that it is not too tricky and can be learned in a day. algorithms, such as loops and conditional behavior, but they make the calls. The standard UML requires every branch to be merged. Mermaid's syntax is used to create diagrams. Typically, a sequence diagram captures the behavior of a single scenario. ![]() endif carefully to get proper merge nodes.Īfter meddling around for a few minutes trying to get it work by myself, I resorted to SO, (check the source is given). Yes, I agree that the default way PUML generates if-else is horizontal. It is more of a convenience thing when we hand-draw it (at least in PUML, I couldn't get it to work that way no time to go back to UML specs to confirm I used Plant UML as well □ I think proper UML notation doesn't allow that. You can use the If else condition, also called alternatives in UML terms. Have not found a way to have 5 branches appear out from a single branch node
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