Evolving Delta-Oriented Software Product Line
Proc. Large-Scale Complex IT Systems.
Development, Operation and Management, 17th Monterey
Workshop 2012, Oxford, UK, March 19-21, 2012, Revised
LNCS 7539 2012, Springer;
Abstract: Diversity is prevalent in modern software
systems. Several system variants exist at the same time in
order to adapt to changing user requirements.
Additionally, software systems evolve over time in order
to adjust to unanticipated changes in their application
environment. In modern software development, software
architecture modeling is an important means to deal with
system complexity by architectural decomposition. This
leads to the need of architectural description languages
that can represent spatial and temporal variability. In
this paper, we present delta modeling of software
architectures as a uniform modeling formalism for
architectural variability in space and in time. In order
to avoid degeneration of the product line model under
system evolution, we present refactoring techniques to
maintain and improve the quality of the variability model.
Using a running example from the automotive domain, we
evaluate our approach by carrying out a case study that
compares delta modeling with annotative variability