Diagrams
UML is based around a number of diagrams. 13 types in UML 2.0 (which UModel supports) of diagrams to be precise. These diagrams represent everything from use cases (featuring a stick figure who interacts with blobs) to diagrams of programming objects (including methods, properties, etc.), activity diagrams (like the flowcharts of yore) and more. UModel currently supports the creation of six of these. It should be noted that while it is rarely necessary to include all of the UML diagrams, the exclusion of activity, state, and sequence diagrams is certainly noticeable. Let's take a quick look at the diagram types currently supported:
- Use Case Diagrams: Use case diagrams are utilized for illustrating the "actors" of an application and the system. An example might be a library visitor interacting with the book hold part of the system. This is a high level illustration. Figure 1 shows UModel's interface for use cases:
Figure 1: UModel's interface for use cases.
- Class Diagrams: A class diagram shows classes and types in a system and how they interact. This is more of a code-level diagram that shows inheritance, class methods, and the like. Figure 2 shows a class diagram in UModel.
Figure 2: UModel's class diagram.
- Object Diagrams: Object diagrams highlight objects and their relationships. These are typically a subset of a class diagram and a deeper code-level one. Like the class diagrams, these show constructors, methods, and properties. Figure 3 is a UModel object diagram.
Figure 3: UModel's object diagram.
- Packages: These show model elements and their organization in packages, as well as how they relate to one another. They're more of a high level diagram highlighting how the application is packaged. See Figure 4.
Figure 4: UModel's Packages.
- Component Diagrams: These show the components of an application and their interfaces. Also shows what interacts with these components, as you can see in Figure 5.
Figure 5: UModel's component diagram.
- Deployment Diagrams: These diagrams show the hardware, software, and middleware elements and how they interact with one another. Another high level view—but from the application and infrastructure perspective. Figure 6 shows how this diagram looks in UModel.
Figure 6: UModel's deployment diagram.
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