By Steffen Becker
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Additional info for Coupled Model Transformations for QoS Enabled Component-Based Software Design
Mapping instances of a normative meta-model like the PCM to an implementation platform like Java Enterprise Edition and EJB requires to bridge mismatches in the underlying concepts. For example, as EJB uses classes for components, it has no explicit support for required interfaces. Several options exist to reflect this concept. This thesis makes the options for bridging mismatches explicit and allows a selection by the transformation user. For this, the transformations use feature diagrams (Czarnecki and Eisenecker, 2000) to parametrise the transformation.
2002) to component-based software modelling (Wu and Woodside, 2004). The Coupled Transformations in this thesis directly modify a PCM instance with in-place transformations to include the performance impact. This allows reusing the expressiveness of the PCM and the existing simulation transformation to solve the modified model. 4 Structure This thesis is structured in six chapters: Chapter 2 introduces foundations and work related to the concepts presented in this thesis. Its basic structure follows the three main areas involved in this thesis: CBSE, model-driven software development, and performance prediction.
As in such a process, there may not even exist technical design documents like UML2 diagrams if transformations generate code directly from instances of the DSL. In such cases the performance of the final implementation depends mainly on the transformation. Coupled Transformations is a method which is not restricted to performance modelling. Coupled Transformations offers the advantage for developers to model their systems on higher abstraction level without loosing details of lower abstraction levels necessary for accurate analyses of system properties.
Coupled Model Transformations for QoS Enabled Component-Based Software Design by Steffen Becker