http://dl.gi.de/handle/20.500.12116/24943 Tue, 21 Jul 2026 13:30:53 GMT 2026-07-21T13:30:53Z http://dl.gi.de:80/bitstream/id/6a3e38f7-eba6-4a3c-82d9-6779709e1fcd/ http://dl.gi.de/handle/20.500.12116/24943 http://dl.gi.de/handle/20.500.12116/24949 Developing portfolios of enterprise applications using software product lines Helferich, Andreas; Herzwurm, Georg; Schockert, Sixten Turowski, Klaus; Zaha, Johannes Maria Research on Component-Oriented Business Applications has focussed on Specifications of Components and Component Markets. Another approach based on Mass Customization and Software Product Lines is presented here. Mass Customization is a strategic concept used in many industries to offer products that are customer-individual, but based on a limited number of building blocks. Thus, customer value is maximized while developing the systems is still economical. Software Product Lines are a promising approach to allow the adoption of Mass Customization for Software in general and Business Applications in particular. Unfortunately, existing literature on Software Product Lines largely ignores the importance of strategic decisions on the product portfolio. Quality Function Deployment (QFD) is a well-known and successfully used Quality Management method that can help companies identify true customer needs and the features needed to fulfil these needs. This paper demonstrates how QFD can be used for Product Portfolio Planning, thus offering potentially great benefits. Sat, 01 Jan 2005 00:00:00 GMT http://dl.gi.de/handle/20.500.12116/24949 2005-01-01T00:00:00Z http://dl.gi.de/handle/20.500.12116/24952 Eleggua: an event infrastructure for application cooperation Casallas, Rubby; Lopez, Nicolás; Correal, Darío Turowski, Klaus; Zaha, Johannes Maria Global Software Development (GSD) is a reality but still faces a lot of challenges to give solutions to problems related to software processes themselves, and problems raised by geographical dispersion. Focusing on the latter, we are interested in building a supporting software development environment to integrate processes and tools. This paper introduces Eleggua, an infrastructure for application cooperation with a central focus on low coupling and loose integration of applications. Eleggua is based on distributed events and Web Services for communication. It also uses Event Condition Action (ECA) rules to describe application cooperation models. The goal of application cooperation is to ensure consistency and integrity of overlapping domain concepts embedded in applications that interact throughout the enactment of business processes. The main restrictions on the design are imposed by the existence of heterogeneous, distributed, legacy systems which are too expensive to modify. Eleggua is being validated in the context of a GSD project1 focused on improving processes of a software house that faces the challenges of geographical dispersion. Sat, 01 Jan 2005 00:00:00 GMT http://dl.gi.de/handle/20.500.12116/24952 2005-01-01T00:00:00Z http://dl.gi.de/handle/20.500.12116/24951 PeeRCR: a distributed P2P-based reusable component repository system Chen, Dehua; Guo, Ruiqiang; Le, Jiajin; Shi, Wei Turowski, Klaus; Zaha, Johannes Maria For software reuse to be successful, a repository for storing and retrieving reusable components is essential. The traditional component repositories almost adopt Client/Server mode and offer a centralized authority on reusable components stored. However, such C/S-based repositories suffer from several limitations. This paper presents the design and implementation of an original P2P-based reusable component repository system called PeeRCR that enables the sharing of reusable component in a large distributed environment. We build the PeeRCR system using peer-to-peer distributed hash table protocol. The PeeRCR uses two kinds of index dictionaries (Local Dictionary and DHT-based Peer Dictionary respectively) together to assist in processing reusable component queries. We also implement a number of alternative scheme repositories to evaluate the performance of the PeeRCR. The experimental results demonstrate the feasibility and effectiveness of the PeeRCR for sharing reusable components in a large distributed and dynamic environment. Sat, 01 Jan 2005 00:00:00 GMT http://dl.gi.de/handle/20.500.12116/24951 2005-01-01T00:00:00Z http://dl.gi.de/handle/20.500.12116/24953 A web engineering approach to model the architecture of inter-organizational applications Meinecke, Johannes; Gaedke, Martin; Nussbaumer, Martin Turowski, Klaus; Zaha, Johannes Maria During recent years, the World Wide Web (WWW, Web) has increasingly been used as a platform for applications that link together processes both between and across organizations. Acting as distributed components, Web Services provide a standardized way of externalizing functionality on a global scale and as such enable accesses that transcend organizational boundaries to form federated applications. The design and evolution of these federated applications is now imposing new obligations for the disciplined engineering of composed Web solutions. To meet these obligations, we extend the WebComposition idea, which is an approach to apply component-based software development concepts on Web applications. This extension facilitates modeling the complex landscape of the components and services building the federated applications. In this context, we introduce the WebComposition Architecture Model that serves as a map to keep track of the interrelations between the federated partners in terms of the involved Web-technology. Among the modeled artifacts are Web services, Web Applications and organizational zones of control that are all subject to evolution in the sense of the WebComposition approach. Sat, 01 Jan 2005 00:00:00 GMT http://dl.gi.de/handle/20.500.12116/24953 2005-01-01T00:00:00Z