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Splitting Large UML Sequence Diagrams


A new feature introduced in UModel 2010 release 2 allows you to split large sequence diagrams when you reverse engineer existing Java, C#, or Visual Basic source code. What are the advantages of splitting a sequence diagram, and how should you decide to split or not? Obviously, a single diagram makes it easy to examine in one view all the interactions that occur during the execution of a class operation. On the other hand, a large, complex diagram can be cumbersome to view, navigate, analyze, and print in a readable format. Fortunately, UModel 2010r2 makes it quick and easy to experiment. After you generate your sequence diagram, if you don’t like the results, just click the Undo button and you can create a new variation by choosing different options in the Sequence Diagram Generation dialog. Or, you can even apply the Generate Sequence Diagram feature more than once to the same class operation, and maintain multiple versions of the sequence diagram in your model. For instance, if you plan to modify the existing code, you might want to keep a permanent record of the “before” and “after” editions to document your changes. We recently adapted our analysis of a bank ATM legacy application to create two new Technical Briefs in the Reference Library section of the Altova Web site, titled Analyze a Legacy Application with Altova UModel and Enhance a Legacy Application with Altova UModel. Enhancement of the code included adding a new method called getFinalOkay directly in the original source code file for the Withdrawal class. When we completed the round trip by synchronizing our UModel project with the application code, the split version of the sequence diagram included a dedicated sub-diagram for the new method. The sub-diagram is automatically labeled with a note and hyperlinked to the main diagram. UML_sequence_diagram If you’re ready to see for yourself how a visual software model can help you work with your own legacy application, click here to download a fully-functional free trial of Altova UModel!

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New video available: UML round trip engineering


We’ve just uploaded a new Flash video in the UModel UML modeling series titled "Round Trip Engineering." The Round Trip Engineering video describes how to move your software modeling project ahead either by working directly in the source code or by expanding and refining your UML model, while keeping both the code and model in sync. uml_reverse_engineering_demo Even if you’re a code jockey who prefers to work directly in your IDE, maintaining an accurate UML model promotes good communication tool among team members. You can use the UModel UML project documentation feature to quickly generate customized project docs in HTML, rich text, or Microsoft Word formats that will keep the project manager happy too. And don’t forget, the UModel Enterprise Edition integrates with both the Visual Studio and Eclipse development environments and features automatic real-time synchronization of changes in either your source code library or UML model. We’re also thrilled with the popularity of the UModel video titled Creating UML Use Case Diagrams on both our site and YouTube. We posted it on YouTube just over a year ago, and it has accumulated over 18,000 views, becoming one of the most popular videos on YouTube covering the Unified Modeling Language.   Please let us know what you think of the new Round Trip Engineering video, and stay tuned for upcoming installments on the DatabaseSpy database tool

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