![]() ![]() Activities may be applied to organizational modeling for business process engineering and workflow. In this context, they are the methods corresponding to operations on classes. In an object-oriented model, activities are usually invoked indirectly as methods bound to operations that are directly invoked.Īctivities may describe procedural computation. Activities may form invocation hierarchies invoking other activities, ultimately resolving to individual actions. Activity nodes also include flow-ofcontrol constructs, such as synchronization, decision, and concurrency control. A node can be the execution of a subordinate behavior, such as an arithmetic computation, a call to an operation, or manipulation of object contents. The flow of execution is modeled as activity nodes connected by activity edges. The subordinate behaviors coordinated by these models may be initiated because other behaviors in the model finish executing, because objects and data become available, or because events occur external to the flow. The behaviors coordinated by these models can be initiated because other behaviors finish executing, because objects and data become available, or because events occur external to the flow.Īn activity specifies the coordination of executions of subordinate behaviors, using a control and data flow model. These are commonly called control flow and object flow models. Definition The focus of activity modeling is the sequence and conditions for coordinating lower-level behaviors, rather than which classifiers own those behaviors. ![]()
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