- #Sequence diagram example simple how to
- #Sequence diagram example simple software
- #Sequence diagram example simple code
It calls the TollBasket object’s collectToll operation. The collectNextToll operation makes a synchronous call to two other operations. You know that the calls are synchronous because of the solid closed arrowhead ( ). This means that the start operation must wait for the collectNextToll operation to finish before continuing. The start operation’s calls to the collectNextToll operation are synchronous. You know that the calls to the collectNextToll operation are repeated indefinitely because of the asterisk ( *) that precedes the name of the operation. The start operation repeatedly calls the TollBooth object’s collectNextToll operation. This means that after initiating the start operation, the TollManager does not wait for the operation to finish it just continues to go about its business at the same time. You know that it runs asynchronously of what the TollManager is doing because of the open arrowhead ( ). The start operation runs asynchronously of what the TollManager is doing. A TollManager, who is some kind of external actor, causes a TollBooth object’s start operation to be called. This diagram shows some of the interactions among the objects involved in running a toll gate in a toll plaza. Figure 1 shows an example of a sequence diagram. UML sequence diagrams show a sequence of interactions among objects. If the interaction involves a method or relationship that does not yet exist in the object mode, you either add it to the model or modify something already in the object model to accommodate the interaction. The most common type of interaction diagram used for this purpose is a sequence diagram. The usual way to refine this estimate into a detailed object model is to work through the object interactions that are needed to support individual features or use cases.Īs you discover each interaction, you add it to an interaction diagram. The process of object-oriented design begins with an initial estimate of the classes that will be needed. This allows the relationships and responsibilities of classes to be worked out efficiently and with little distraction. The value of Object-Oriented Design is in allowing major structural decisions to be made before being committed to code. We may make money when you click on links to our partners.
#Sequence diagram example simple code
I use noweb ( site, docs) to get the runnable code or the source for the content and product recommendations are editorially independent. In the LaTeX source the relevant bits of executable code are just below the diagram, So this LaTeX code \documentclassĬreates this picture (of course using the fonts of the rest of your document, etc.): They are specified semantically, like most other tools, meaning you say what sequence you what, not how it should look. So for this purpose, LaTeX + pgf-umlsd can create very good looking diagrams. In any case, sequence diagrams, being visual, nicely complement code and writing.
#Sequence diagram example simple software
Over the years I've come to appreciate literate programming as a super nice way to write quality software and keep that code comprehensible. This answers is maybe not exactly what you had in mind, so let me shortly give a context. Otherwise, for print, see my origina answer below.
#Sequence diagram example simple how to
Here is an example showing how to create a simple sequence -> Bob: Authentication RequestĪlice -> Bob: Another authentication Requestĭeactivate probably mermaid is good enough, you can use it in various markdown editors, such as hackmd. tutxt To generate images with ASCII art using Unicode characters thtml To generate HTML files for class diagram txmi To generate XMI file for class diagram teps To generate images using EPS format Output file types: -tsvg To generate images using SVG format In my experience it has been easy to use and it produces nice looking diagrams. That they have been generated with PlantUML, although this will be
The generated images can then be used without any reference to the PlantUML is used to draw UML diagram, using a simple and human
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