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Persistent Graphical Objects

  • Conference paper
Advances in Object-Oriented Graphics I

Part of the book series: EurographicSeminars ((FOCUS COMPUTER))

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Abstract

Persistent objects are objects whose contents may outlive the execution time of the program. This chapter describes the process of introducing persistent objects in the object-oriented programming language Procol. The strength of persistent objects in an object-oriented programming language is the integration of a database system with a programming language. Persistent objects make program development easier, because the programmer does not have to implement the explicit loading and saving of data. Besides the general functional aspects, special attention is paid to graphical applications in order to deal with their specific geometric requirements. For example, it must be possible to find, in an efficient manner, all graphical objects that fall within a given region. These issues, persistent objects and their geometric requirements, have not yet got the attention they deserve in the literature covering object-oriented graphical systems where modelling and functional aspects dominate.

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Authors
  1. Chris Laffra
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  2. Peter van Oosterom
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Editor information

Editors and Affiliations

  1. Centrum voor Wiskunde en Informatica, P. O. Box 4079, NL-1009 AB, Amsterdam, The Netherlands

    Edwin H. Blake (Co-Chairman) (Co-Chairman)

  2. Institute for Applied Information Technology, National Research Center for Computer Science (GMD), Postfach 1240, W-5205, Sankt Augustin 1, Germany

    Peter Wisskirchen (Co-Chairman) (Co-Chairman)

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© 1991 EUROGRAPHICS The European Association for Computer Graphics

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Laffra, C., van Oosterom, P. (1991). Persistent Graphical Objects. In: Blake, E.H., Wisskirchen, P. (eds) Advances in Object-Oriented Graphics I. EurographicSeminars. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-76303-8_6

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  • DOI: https://doi.org/10.1007/978-3-642-76303-8_6

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-76305-2

  • Online ISBN: 978-3-642-76303-8

  • eBook Packages: Springer Book Archive

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