DYNAMO Design Guidebook

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McNeely, Corinne
Rugaber, Spencer
Stirewalt, R. E. Kurt
Zook, David
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The DYNAMO project is concerned with the assembly of components of interactive systems. It includes a design method, described in this guidebook, and a set of tools that support it. The DYNAMO design method starts with a declarative model of the assembly expressed using a graphical UML CASE tool. From the declarative model, DYNAMO tools automatically generate C++ wrapper classes that glue the components together. The DYNAMO design method comprises three-phases that refine a conceptual model of a proposed assembly into interrelated components organized into layered mode components. In Phase 0, the environment in which the assembly executes is described in terms of external actors, the assembly itself, the communication among them, and the behavioral properties that the assembly guarantees to maintain. Phase 1 asks the designer to partition the assembly into its constituent components and their relationships, assigning responsibility for external actions and guarantee-maintenance to the components appropriately. Finally, Phase 2 asks the designer to layer the constituents as mode components, where lower-level components communicate status changes upward, and higher-level components make specific service requests of lower-level components. For each phase, the guidebook provide a purpose, a diagrammatic representation that describes the resulting design artifact, a set of steps to create that diagram, and a set of guidelines or design rules for making appropriate design decisions. Each phase is illustrated using the example of a simple text browser assembly. At the end of the document, a glossary of all DYNAMO-related terms is provided.
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