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International Conference on Object-Oriented Information Systems

OOIS 2002: Object-Oriented Information Systems pp 521–535Cite as

Flexible Object-Oriented Views Using Method Propagation

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Part of the book series: Lecture Notes in Computer Science ((LNCS,volume 2425))

Abstract

Object-oriented views play a key role when giving accessing applications a new or restricted perspective on persistent object-oriented data. However, traditional object-oriented view systems only allow for limited changes when it comes to restructuring a database schema and the related persistent objects in a view. We present a new approach for defining object-oriented views that enables view schemas and view objects whose structure is highly flexible with respect to the underlying database structure. Nevertheless we can guarantee complete type-safety of view schemas and a well-defined and consistent behavior when running updates on view objects as well as on underlying database objects.

We reach this goal through the concept of method propagation: given that a method of a persistent base class fulfills certain conditions, it can be attached to view classes after its signature is appropriately adjusted. At runtime a method call on a view object is delegated to a corresponding base object and executed there.

In the course of this paper we introduce a formal model for objectoriented databases which serves as a basis for defining method propagation conditions. We then present a view language that is derived from our formal approach and highlight the architecture of a prototypical view system.

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Author information

Authors and Affiliations

  1. Institute for Program Structures and Data Organisation (IPD), Universität Karlsruhe, Germany

    Daniel Pfeifer

Authors
  1. Daniel Pfeifer
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Editor information

Editors and Affiliations

  1. UMR 5506 CNRS LIRMM - Laboratoire d’Informatique, de Robotique et de Microélectronique de Montpellier, Université Montpellier II, 161, Rue Ada, 34392, Montpellier, France

    Zohra Bellahsène

  2. School of Computing, Information Systems and Mathematics Centre for Information and Organisation Studies, South Bank University, 103 Borough Road, SE1 0AA, London, UK

    Dilip Patel

  3. Panthéon Sorbonne Centre de Recherche en Informatique, Université Paris 1, 90 Rue de Tolbiac, 75634, Paris cedex 13, France

    Colette Rolland

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© 2002 Springer-Verlag Berlin Heidelberg

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Pfeifer, D. (2002). Flexible Object-Oriented Views Using Method Propagation. In: Bellahsène, Z., Patel, D., Rolland, C. (eds) Object-Oriented Information Systems. OOIS 2002. Lecture Notes in Computer Science, vol 2425. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-46102-7_54

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  • DOI: https://doi.org/10.1007/3-540-46102-7_54

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-44087-1

  • Online ISBN: 978-3-540-46102-9

  • eBook Packages: Springer Book Archive

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