Object-Oriented Software Development with UML - UNU-IIST ...

Creating Collaboration Diagrams 121t:=total():Sale1*:[for each] sli:=next()2: st:=subtotal()sli:SalesLineItem:SalesLineItem2.1: p:=price():ProductSpecificationdatetimetotal()SaleSalesLineItemquantitysubtotal()ProductSpecificationdescriptionpriceupcprice()Figure 7.39: Recording methods of classes when create a collaboration diagramnavigability¾dependencies¾Steps in making a design class diagramUse the following strategy to create a design class diagram:1. Identify all the classes participating in the object interactions. Do this by analysing the collaborationdiagrams.2. Draw them in a class diagram.3. Copy the attributes from the associated concepts in the conceptual model.4. Add method names by analysing the collaboration diagrams.5. Add type information to the attributes and methods.6. Add the associations necessary to support the required attribute visibility.7. Add navigability arrows necessary to the associations to indicate the direction of attribute visibility.8. Add dependency relationship lines to indicate non-attribute visibility.These steps, except for stepsí &î , are mostly straightforward.Report No. 259, July 2002UNU/IIST, P.O. Box 3058, Macau