Modeling Object-Oriented Software for Reverse Engineering and Refactoring (2001)
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BibTeX
@MISC{Tichelaar01modelingobject-oriented,
author = {Sander Tichelaar},
title = {Modeling Object-Oriented Software for Reverse Engineering and Refactoring},
year = {2001}
}
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Abstract
The increased popularity of the object-oriented paradigm has also increased the interest in object-oriented reengineering. First of all, object-oriented software systems suffer from similar maintainability problems as traditional procedural systems, displaying the need for reengineering techniques tailored to deal with ob- ject-oriented code. Secondly, the increased importance of iterative development processes make reengi- neering techniques valuable in forward engineering, and thus for all paradigms that software is developed in. Reengineering requires tool support to deal with the large amounts of information and the wide variety of tasks to be performed. An important consideration in building tool environments for reengineering is what information must be provided and how this information is modelled. Design choices have a consider- able impact not only on the ability to support reengineering tasks, but also on issues such as scalability and tool interoperability. Several metamodels exist that model software for the purposes of reengineering. How- ever, they generally lack a discussion of the relevance of information for reengineering and the trade-offs of modeling alternatives. This thesis presents FAMIX, a language-independent metamodel for modelling object-oriented soft- ware for reengineering purposes. We discuss the exact contents of the metamodel, including its relevance for reengineering and how the metamodel supports the different object-oriented languages through its lan- guage-independent core. We also discuss the infrastructural design decisions of FAMIX by placing it into a design space for infrastructural aspects of reengineering repositories and metamodels. The design space presents multiple interdependent aspects, their design alternatives and how these impact issues such as scal- ability, extensibility and information exchange. We validate the ability of FAMIX to support reengineering on a language-independent level in two ways. First, we present Moose, a reengineering tool environment with a repository based on FAMIX. Moose serves as a foundation for multiple reengineering tools and has been applied to reverse engineer several large industrial case studies. Secondly, we define a set of fifteen low-level refactorings in terms of the infor- mation available in FAMIX. Refactoring requires sufficient, complete and 100% correct information as well as a clear interpretation of the supported languages in the language-independent core of the metamod- el, in order to correctly perform transformations on the language-specific code level. As such the refactor- ings provide an in-depth validation of the language independence of FAMIX.
