(To be honest, this 15% "I think I'm right and I want you to agree with me," and 85% "I don't understand and want to learn from someone who may be considering things I missed. But it seems to me that the same type of action (var assignment) would be shown with the same type of graphical element (arrow or note) regardless of the context in which the diagram is used. Granted, a Sequence Diagram can be used for different purposes and at different points in the development process. Isn't a variable assignment an action that an object performs, which is what the arrows in a Seq Diag are explictly for? ![]() What is it about a variable assgnment that would make you put it in a note? i.e. It seems to me that in terms of formality a simple variable assignment would fit in between what's on the IBM picture I included above and what's on the Agile Modelling picture here. ![]() The Build SQL Select action that Persistence Framwork performs on itself is far from formalized method calls that one often sees on a Seq Diag. Why? Isn't a simple variable assignment more conceptually similar to a method call than to the type of stuff that normally goes in a note? For example, on the Sequence Diagram page at there's this pic: (Edit: This may not be necessary as code syntax checking happens with every keypress, even with sync off.I'd go with the note, if I really had to show it. The program should be able to gracefully handle directives that do not have an associated message yet (sort of like putting participant or actor at the beginning of the diagram), and ideally it should handle having the create/destroy being placed anywhere in the diagram (which will be important for #4707 to be implemented properly). This issue does not surface if you turn off auto-sync, or if you copy and paste correct code into the editor.įundamentally, I believe this is an issue with how the creation / destroy directives are handled. I spent about 15 minutes trying to figure out why I kept getting the error for a name I had never used in my diagram, and had deleted all references to. In practice, this means that if you manually type in create participant example - then the code would detect create participant e and then lock up with an error. The Live site's "auto sync" mode refreshes the diagram after every keypress. This presents a serious problem with the functionality of the Live site (and will likely also impact other live viewers like The VS Code extension when it is updated). Once this error has occurred, the error will persist in the cache until it is cleared. As a result, if you type create participant T before you type A -> T: example then the code will error and say Error: The created participant T does not have an associated creating message after its declaration. ![]() Lifelines: Drag the end of a lifeline to. Click More Shapes at the bottom of the left panel, enable the UML and UML 2.5 libraries in the Software section, and click Apply. The UML 2.5 and UML shape libraries contain all the shapes you will need. These requirements are not the clearest in the documentation, especially when it comes to the order of typing things. There are several sequence diagram templates you can modify to start your sequence diagram faster. you cannot reuse existing participant/actor names.you must exactly match the name of the participant/actor being created/destroyed Sequence diagrams are a powerful tool in software engineering, specifically in the realm of interaction diagrams. ![]()
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