institut f¨ur informatik - PST Thesis Management Interface - LMU

4. Automation of Generic AUTOSAR
This chapter elaborates Generic AUTOSAR that was introduced in section 3.3 in detail. In
particular, it explains the steps that are necessary to realize the GAUTOSAR concept with
an emphasis on an automated realization process. The chapter is organized as follows:
• Conceptual realization of GAUTOSAR is explained first in section 4.1 by introducing
the necessary phases for the realization process. This is followed by an
elaboration of the manual and the automatic realization approach. The motivation
behind the automatic approach serves as an introduction to the remaining two parts
of the chapter.
• Analysis of the AUTOSAR metamodel comparison process and the resulting
difference model. A concept for the implementation of step one of the GAU-
TOSAR realization process presented in section 4.1.1 has been contributed in preceding
work. The analysis of this work is presented in section 4.2, including solutions for
known limitations and necessary improvements that were contributed in this thesis.
• Presentation of a concept for automated creation of the generic metamodel.
A concept for the implementation of step two of the GAUTOSAR realization process
presented in section 4.1.1 is the main subject of this thesis. The developed concept
and the prototype that implements the concept are presented in section 4.3.
4.1. Realization of GAUTOSAR
The GAUTOSAR realization process has already emerged in the course of Artop development
prior to this thesis. However, it is still subject to research and has not been formalized
yet. In [Kni11], a preceding thesis at BMW Car IT, a three-step process is proposed: metamodel
comparison, manual refinement of comparison results and finally generation of target
entities, such as API code or further models. These steps were established with an emphasis
on metamodel comparison and presentation of comparison results.
4.1.1. Process steps for realizing GAUTOSAR
The process for the creation of the version-independent GAUTOSAR API will follow similar
principles as for the version-specific AUTOSAR APIs. This involves automatic code generation
from a metamodel. The generic metamodel that will be used for code generation
should encompass all elements that are common to version-specific metamodels supported
in a single Artop release. Thus, a refined sequence for the realization of GAUTOSAR that
considers both metamodel comparison and creation of the generic metamodel is proposed.
This process is illustrated in figure 4.1. The sequence for the realization process is organized
in a way such that each step contributes a framework that helps realize the respective
subsequent step:
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