WUML - Eine UML-basierte Modellierungssprache für ubiquitäre Web-Anwendungen

In the last years web-applications changed from pure information representation systems to complex applications that are based on underlying database systems. Furthermore there is a trend towards applications that individually adapt themselves to the circumstances of use including the current user and by that, these applications provide ubiquitous access to information and services at any time, at any place and by any media. To meet these rising demands for web-applications, adequate software engineering techniques, especially new modelling languages, are necessary. This diploma thesis introduces WUML, which is a modelling language based on UML. WUML makes it feasible to model ubiquitous web-applications in a comfortable and understandable way by providing mechanisms that allow to adapt the application depending on the actual context. This is mainly accomplished by the use of Event/Condition/Action-Rules. A change of the context triggers an event which, if the specified conditions hold, releases the actions that adapt the application. In addition to a generic rule model WUML also embraces three models for the specification of the application, comprising ContentModel, HyperbaseModel and PresentationModel. Defined interfaces between these models make sure that adaptations in one model don't have to be modeled in the other models too, because they are automatically propagated to the other models by corresponding mapping rules. This has also the advantage that these models can be developed almost independently from each other. To demonstrate the usability of WUML and to elucidate the relationships between the WUML models, two examples from different problem domains are fully modeled by means of WUML.