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The Nested Context Language reuse features

Journal of the Brazilian Computer Society volume 16, pages 229–245 (2010)Cite this article

Abstract

NCL, the standard declarative language of the Brazilian Terrestrial Digital TV System and ITU-T Recommendation for IPTV Services, provides a high level of reuse in the design of hypermedia applications. In this paper we detail how its design and conceptual model have succeeded in supporting reuse at a declarative level. NCL supports not only static but also running code reuse. It also allows for reuse inside applications, reuse between applications, and reuse of code spans stored in external libraries. For a specification language to promote reuse, however, it must have a number of usability merits. Aspects of NCL usability are thus analyzed with the Cognitive Dimensions of Notation framework.

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Affiliations

  1. Department of Informatics, Pontifical Catholic University of Rio de Janeiro, Rua Marquês de São Vicente, 225, Gávea, CEP 22453-900, Rio de Janeiro, RJ, Brazil

    Carlos de Salles Soares Neto, Luiz Fernando Gomes Soares & Clarisse Sieckenius de Souza

  2. Department of Informatics, Federal University of Maranhão, Av. dos Portugueses, s/n, Campus do Bacanga, CEP 65080-040, São Luís, MA, Brazil

    Carlos de Salles Soares Neto

Authors
  1. Carlos de Salles Soares Neto
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  2. Luiz Fernando Gomes Soares
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  3. Clarisse Sieckenius de Souza
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Corresponding author

Correspondence to Carlos de Salles Soares Neto.

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Soares Neto, C.d.S., Soares, L.F.G. & de Souza, C.S. The Nested Context Language reuse features. J Braz Comput Soc 16, 229–245 (2010). https://doi.org/10.1007/s13173-010-0017-z

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Keywords

  • Ginga-NCL
  • DTV
  • NCL
  • SBTVD-T
  • Middleware
  • Code reuse
  • Declarative programming
  • Cognitive Dimensions of Notation