Keywords: mde, mda, aom, aop, oaw, gmf, emf, gef
Astract: Model Driven Engineering (MDE) and Aspect Oriented Software Development (AOSD) are among what is to be said 'the next big thing'.
Despite their youth, both approaches already show their value to the software engineering community manifold and gain more and more attention as well in other domains. Recently, the web modeling language WebML, an academic method that is supported by the commercial tool WebRatio, has been extended with concepts from the aspect-orientation paradigm. The resulting aspectWebML modeling language, allows for separately modeling crosscutting concerns such as customization for context-aware web applications, from the rest of the applications functionality. Currently aspectWebML is supported by a simple tree-based modeling editor built upon the Eclipse Modeling Framework (EMF), only. While such EMF editors have been around for some time and proved their usefulness, their clumsy handling certainly does not address the modelers' needs.
The primary objective of this work is to propose an Graphical Integrated Develoment Environment (IDE) for allowing to develop web applications with aspectWebML in the sense of MDE. In this respect, a major focus is placed on integrating views that support the user in modeling and quickly absorbing aspect-orientation-related interconnections between elements, being at the very core of the aspectWebML language.
Furthermore, some technologies that build the foundation for GMFs success, i.e. EMF and the code generation framework openArchitectureWare (OAW), are to be used in the next step to construct basic model transformation and code generation facilites for aspectWebML that can be easily plugged into the IDE. The ultimate goal is to show how building an integrated toolset for custom metamodels can be done efficiently with current (open source) technologies.

Keywords: model weaving, emf, web 2.0, ajax, model transformation, mdsd
Astract: Model-Driven Software Developement (MDSD) simplifies software and raises its quality. A central tool of MSDS is model weaving which delivers necessary informations for model transformations, i.e. about merging or extending existing models. Existing approches to MDSD like the ATLAS Model Weaver (AMW) from the ATLAS-group are implemented as fat-client applications. This causes costs and complexity through client-side installations as well as a higher demand of resources on the client-side. And since AMW is a part of the Eclipse Modelling Framework version incompatibilities can cause unexpected problems. Model-Driven Software Developement has brought platforms to existence which try to ease the exchange of models. These so-called ''model repositories'' support developers with frameworks for model-driven software developement. But what is missing is a link between those respositories. \\ This paper aims to create an application which brings model-weaving to the web by building atop Jürgen Flandorfer's MetaModelBrowser. The goal is to create a completely web-based lightweight client to avoid costs for resources and administration. Being an application on its own, avoiding unnecessary connections with other applications (like i.e. AMW has) lower risks of failure. Models will be managed directly on the server and available over an understandable user interface that asures ease of use and lower training times for users. Additionally collaborative functions will enable simultaneous work. Using a function of the MetaModelBrowser models can be embedded using a URL.
That way model repositories can be integrated into the weaving process. As a web-based application this model weaver will be an alternative to common Eclipse-based approaches to model weaving, using the advantages web-based applications have to offer and leaving behind the problems of the current solutions.

Keywords: MDA, MDE, business processes, model transformation, FUJABA, Triple Graph Grammars, UML, EPK
Astract: In recent years the need for business process model transformation has increased. The primary reason for this is the importance of business to business interoperability. A lot of research is done in this area. Several transformation techniques exist in the field of MDA which is the model driven architecture as defined by Object Management Group (OMG).
In Business Process Modeling many modeling languages such as Business Process Modeling Notation, UML 2.1 Activity Diagrams, Event-Driven Process Chains et cetera are used. There is also a certain diversity in transformation techniques such as ATL, QVT or Kermeta. Most model transformation approaches focus on software development, and less in business processes. Therefore some approaches may be more or less suitable for this task than others.
In this master thesis, a transformation approach, namely Triple Graph Grammars will be inspected for its suitability in business process model transformation.
Event-driven Process Chains and Activity Diagrams from UML 2.x are chosen as business process modeling languages because of the wide spread popularity of these languages. Fujaba will be used as transformation tool for its Triple Graph Grammar support and its extendibility.
In the thesis the business process modeling languages Event-driven Process Chains and Activity Diagrams are described. Furthermore, several example models for Event-driven Process Chains and Activity Diagrams are de ned.
In the practical part the goal is to develop Fujaba plug-ins for those modeling languages, as well as to de ne the Triple Graph Grammars rules based on the new plug-ins. The example models will be needed to test if the Triple Graph Grammar rules are intend correctly.
Fujaba is an open source project from the University of Paderborn. Its primary topic is to provide an extendable platform for UML, Story Driven Modeling and Graph Transformation platform with the ability to add plug-ins. In the master thesis this tool is used because of its mature Triple Graph Grammar support Another reason is its extensibility which is useful for creating custom plug-ins for Event-driven Process Chains and Activity Diagrams.
The plug-ins are developed with Java and rely on the meta models of Activity Diagrams and Event-driven Process Chains. The prepared meta models are also used when defining the Triple Graph Grammar rules as initial point. The meta models and the transformation are focused on Control Flow of business processes, because of its central importance in business process modeling.
Organizational ow is also included as a secondary view.
2 In order to make a statement on how suitable the described approach is, a list of criteria is defined. Based on this criteria business process model transformation with triple graph grammars will be evaluated.

Keywords:
Astract: Today's online model repositories offer to download and view the textual specifications of e.g. metamodels and models in the browser. For users, in order to efficiently search a model repository, a graphical visualization of the stored models is desirable. First attempts that automatically generate class diagrams as bitmaps, however, do not scale for large models and fail to present all information. In this paper, we present our Web 2.0 MetaModelbrowser, a model visualization service which provides an Ajax-based tree-viewer for efficiently browsing Ecore-based metamodels and their models. As a main contribution of this work the MetaModelbrowser is complementary to existing model repositories in that its visualization service can be integrated into them. The MetaModelbrowser, furthermore, allows zooming in and out of the details of arbitrarily sized models as necessary. Furthermore, we have done some case studies on the one hand how to extend the MetaModelbrowser, e.g., for creation, update, and deletion of model elements as well as supporting model weaving, and on the other hand how to incorporate the MetaModelbrowser in current versioning systems.

Keywords:
Astract: Seamless exchange of models among different modeling tools increasingly becomes a crucial prerequisite for the success of modeldriven engineering. Current best practices use model transformation languages to realize necessary mappings between concepts of the metamodels defining the modeling languages supported by different tools. Existing model transformation languages, however, lack appropriate abstraction mechanisms for resolving recurring kinds of structural heterogeneities one has to primarily cope with when creating such mappings. We propose a framework for building reusable mapping operators which allow the automatic transformation of models. For each mapping operator, the operational semantics is specified on basis of Colored Petri Nets, providing a uniform formalism not only for representing the transformation logic together with the metamodels and the models themselves, but also for executing the transformations, thus facilitating understanding and debugging. To demonstrate the applicability of our approach, we apply the proposed framework for defining a set of mapping operators which are intended to resolve typical structural heterogeneities occurring between the core concepts usually used to define metamodels.