Validation of New Theses on Off-the-Shelf Component Based Development

  • Authors:
  • Jingyue Li;Reidar Conradi;Odd Petter N. Slyngstad;Christian Bunse;Umair Khan;Marco Torchiano;Maurizio Morisio

  • Affiliations:
  • Norwegian University of Science and Technology;Norwegian University of Science and Technology and Simula Research Laboratory;Norwegian University of Science and Technology;Fraunhofer IESE;Fraunhofer IESE;Politecnico di Torino;Politecnico di Torino

  • Venue:
  • METRICS '05 Proceedings of the 11th IEEE International Software Metrics Symposium
  • Year:
  • 2005

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Abstract

Using OTS (Off-The-Shelf) components in software development has become increasingly popular in the IT industry. OTS components can be either COTS (Commercial-Off-The-Shelf), or OSS(Open-Source-Software) components. A recent study with seven structured interviews concluded with six theses, which contradicted widely accepted (or simply undisputed) insight. Since the sample size of that study was very small, it is necessary to investigate these theses in a larger and randomized sample. A state-of-the-practice survey in three countries 驴 Norway, Italy, and Germany 驴 has been performed to validate these new theses. Data from 133 OTS component-based projects has been collected. Results of this survey support four and contradict two of the initial theses. The supported theses are: OSS components were mainly used without modification in practice; custom code mainly provided additional functionality; formal OTS selection processes were seldom used; OTS component users managed to get required changes from vendors. The unsupported theses are: standard mismatches were more frequent than architecture mismatches; OTS components were mainly selected based on architecture compliance instead of function completeness.