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Bouwers, E. (author), Van Deursen, A. (author), Visser, J. (author)In the evaluation of implemented software architectures, metrics can be used to provide an indication of the degree of encapsulation within a system and to serve as a basis for an informed discussion about how well-suited the system is for expected changes. Current literature shows that over 40 different architecture-level metrics are available...report 2011
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Mesbah, A. (author), Van Deursen, A. (author), Lenselink, S. (author)Using JavaScript and dynamic DOM manipulation on the client-side of web applications is becoming a widespread approach for achieving rich interactivity and responsiveness in modern web applications. At the same time, such techniques, collectively known as Ajax, shatter the metaphor of web ‘pages’ with unique URLs, on which traditional web...report 2011
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Hermans, F. (author), Pinzger, M. (author), Van Deursen, A. (author)Spreadsheets are used extensively in business processes around the world and just like software, spreadsheets are changed throughout their lifetime causing maintainability issues. This paper adapts known code smells to spreadsheet formulas. To that end we present a list of metrics by which we can detect smelly formulas and a visualization...report 2011
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Greiler, M. (author), Van Deursen, A. (author), Storey, M.A. (author)Testing plug-in-based systems is challenging due to complex interactions among many different plug-ins, and variations in version and configuration. The objective of this paper is to increase our understanding of what testers and developers think and do when it comes to testing plug-inbased systems. To that end, we conduct a qualitative ...report 2011
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Nasr, K.A. (author), Gross, H.G. (author), Van Deursen, A. (author)Service Oriented Architecture, which builds on distributed computing platforms, is increasingly being adopted by organizations in both public and private sectors. Migration from traditional monolithic systems to services, in particular web services, characterizes much of systems evolution today. This paper analyzes some of the performance and...report 2011
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Bouwers, E. (author), Van Deursen, A. (author), Visser, J. (author)In this paper we introduce the concept of a -dependency profile-, a system level metric aimed at quantifying the level of encapsulation and independence within a system. We verify that these profiles are suitable to be used in an evaluation context by inspecting the dependency profiles for a repository of almost 100 systems. Furthermore we...report 2011
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Guzzi, A. (author), Hattori, L. (author), Lanza, M. (author), Pinzger, M. (author), Van Deursen, A. (author)The program comprehension research community has been developing useful tools and techniques to support developers in the time-consuming activity of understanding software artifacts. However, the majority of the tools do not bring collective benefit to the team: After gaining the necessary understanding of an artifact (e.g., using a technique...report 2011
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Bouwers, E.M. (author), Correia, J.P. (author), Van Deursen, A. (author), Visser, J. (author)The decomposition of a software system into components is a major decision in any software architecture, having a strong influence on many of its quality aspects. A system’s analyzability, in particular, is influenced by its decomposition into components. But into how many components should a system be decomposed to achieve optimal analyzability...report 2011
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Hermans, F. (author), Pinger, M. (author), Van Deursen, A. (author)Spreadsheets are often used in business, for simple tasks, as well as for mission critical tasks such as finance or forecasting. Similar to software, some spreadsheets are of better quality than others, for instance with respect to usability, maintainability or reliability. In contrast with software however, spreadsheets are rarely checked,...report 2011
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Nasr, K.A. (author), Gross, H.G. (author), Van Deursen, A. (author)In this paper, we present two descriptive case studies covering the re-engineering and further evolution of adopting service oriented architecture (SOA) in industry. The first case was carried out for a company in the transport sector with an application portfolio of over 700 systems. The second case study was conducted for an organization in...report 2011
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Mesbah, A. (author), Van Deursen, A. (author), Roest, D. (author)AJAX-based Web 2.0 applications rely on stateful asynchronous client/server communication, and client-side run-time manipulation of the DOM tree. This not only makes them fundamentally different from traditional web applications, but also more error-prone and harder to test. We propose a method for testing AJAX applications automatically, based...report 2011
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Van Deursen, A. (author), Mesbah, A. (author), Cornelissen, B. (author), Zaidman, A. (author), Pinzger, M. (author), Guzzi, A. (author)In practice, many people have to work together to develop and maintain a software system. However, the programmer’s key tool, the Integrated Development Environment (IDE), is a solo-tool, serving to help individual programmers understand and modify the system. Such an IDE does not leverage the knowledge other team members may have of the design...report 2010
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Bouwers, E. (author), Lilienthal, C. (author), Visser, J. (author), Van Deursen, A. (author)Evaluating the complexity of the architecture of a softwaresystem is a difficult task. Many aspects have to be considered to come to a balanced assessment. Several architecture evaluation methods have been proposed, but very few define a quality model to be used during the evaluation process. In addition, those methods that do introduce a...report 2010
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Greiler, M. (author), Gross, H.G. (author), Van Deursen, A. (author)Plug-in architectures enable developers to build extensible software products. Such products are assembled from plug-ins, and their functionality can be enriched by adding or configuring plug-ins. The plug-ins themselves consist also of multiple plug-ins, and offer dedicated points through which their functionality can be influenced. A well...report 2010
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Hermans, F. (author), Pinzger, M. (author), Van Deursen, A. (author)Thanks to their flexibility and intuitive programming model, spreadsheets are widely used in industry, often for businesscritical applications. Similar to software developers, professional spreadsheet users demand support for maintaining and transferring their spreadsheets. In this paper, we first study the problems and information needs of...report 2010
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Zaidman, A. (author), Van Rompaey, B. (author), Van Deursen, A. (author), Demeyer, S. (author)Many software production processes advocate rigorous development testing alongside functional code writing, which implies that both test code and production code should co-evolve. To gain insight in the nature of this co-evolution, this paper proposes three views (realized by a tool called TeMo) that combine information from a software project's...report 2010
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Matthijssen, N. (author), Zaidman, A. (author), Storey, M. (author), Bull, I. (author), Van Deursen, A. (author)Ajax-enabled web applications are a new breed of highly interactive, highly dynamic web applications. Although Ajax allows developers to create rich web applications, Ajax applications can be difficult to comprehend and thus to maintain. For this reason, we have created FireDetective, a tool that uses dynamic analysis at both the client (browser...report 2010
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Groeneveld, F. (author), Mesbah, A. (author), Van Deursen, A. (author)The complexity of modern web applications increases as client-side JavaScript and dynamic DOM programming are used to offer a more interactive web experience. In this paper, we focus on improving the dependability of such applications by automatically inferring invariants from the client-side and using those invariants for testing. By combining...report 2010
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Guzzi, A. (author), Pinzger, M. (author), Van Deursen, A. (author)Software engineers spend a considerable amount of time on program comprehension. Although vendors of Integrated Development Environments (IDEs) and analysis tools address this challenge, current support for storing and sharing program comprehension knowledge is limited. As a consequence, developers have to go through the time-consuming...report 2010
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Bouwers, E. (author), Visser, J. (author), Van Deursen, A. (author)Accepted for publication in the Proceedings of the International Conference on Software Maintenance (ICSM), 2009, IEEE Computer Society. Software architecture evaluation methods aim at identifying potential maintainability problems for a given architecture. Several of these methods exist, which typically prescribe the structure of the evaluation...report 2009