![]() ![]() 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. There's something called LifeQI which is good but a bit spendy and it covers a lot more detail than just driver diagrams.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. You want something that allows horizontal stripes. The other problem is that most software will apply colour vertically to a column, but you probably don't want that. (For example, "we tried change idea 1, and we didn't see any improvement, here's the data"). And you might want to allow it to link to other documents. You want something that allows actions to be attached and completed. The problem is that you want something that a small team can collaborate on that allows them to control where it's stored and viewable that works with baffling NHS bureaucracy and is very easy to use. So, if anyone wants to make diagramming software and is looking for a niche, there's something used in quality improvement called a "driver diagram". If not, how many people would be interested in such a thing? I may start it as an open source project myself. highly customizable visual style (PlantUML, the most flexible I've found in this regard, is notoriously bad at styling, mostly due to a lack of a coherent styling paradigm) no custom language/pseudocode as input, but builder-style approach (I use Java to generate a text description of the diagram and then pass it to the library for parsing - I could just call the methods the parser calls and remove the unneccesary middle man) sending a message does not imply immediate reception on the other side) supports delayed messages (message trasmission and message reception can occur at different times, i.e. supports multiple threads and thread referencing in messages (multiple activations per lifeline) Is there a (Java based) sequence diagram generating tool/library that has the following functionalities: I've recently tried to find a suitable solution for this on StackOverflow, but I've been rejected under the "Opinionated question" remark (::sigh::), so I could just as well do it here. Numbering messages may help, but I find it easier to grasp what is going on visually with multiple activations per lifeline (the best implementation of this I've found to date is the Quick Sequence Diagram Editor, but that project doesn't seem to be active or maintained). Some solutions do provide the "par" fragment, but this is inadequate when message ordering corresponds to cronological ordering. Sequence diagrams seem like the go-to format for displaying data flow in a microservice-type environment, but even though there is a plethora of implementations in various languages and technologies that generate diagrams of this kind, they all lack certain functionalities, number one being the support for threads. ![]()
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