The functional part of the Workflow step encapsulates the purpose of a particular workflow step. For example, the calculation of the volume of a building happens here. The functional part has to be independend of the communication between workflow steps as well as the HCI part. Why? Because a workflow step has to have the same functionality in the SimStadt desktop application and as Web Services. In addition, the workflow can be executed as a batch process and as an interactive system.
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@@ -66,7 +66,9 @@ This algebra can be implemented as a data model using UML.
A building will be implemented as a data type _Building_. The set of buildings S~0~ will be implemented by a class _BuildingCollection_ using the well know abstract data type Set. The set S~1~ will be implemented as _float_. The class _Building_ has three methods to implement the operations of F: _Building()_ to create an instance of a Building, _volume()_ to get the volume of a Building, and _heatedVolume()_ to get the heated volume of a Building. Please note that in contrast to the operations f~1~ and f~2~ the methods _volume()_ and _heatedVolume()_ do not have a building as a parameter as they operate on the specific instance of the class _Building_.
