On the Effective Manipulation of Digital Objects: A Prototype-Based Instantiation Approach

  • Kostas Saidis
  • George Pyrounakis
  • Mara Nikolaidou
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3652)


This paper elaborates on the design and development of an effective digital object manipulation mechanism that facilitates the generation of configurable Digital Library application logic, as expressed by collection manager, cataloguing and browsing modules. Our work aims to resolve the issue that digital objects typing information can be currently utilized only by humans as a guide and not by programs as a digital object type conformance mechanism. Drawing on the notions of the Object Oriented Model, we propose a “type checking” mechanism that automates the conformance of digital objects to their type definitions, named digital object prototypes. We pinpoint the practical benefits gained by our approach in the development of the University of Athens Digital Library, in terms of code reuse and configuration capabilities.


Digital Library Digital Object Resource Description Framework Digital Content Object Instance 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Cardelli, L.: A semantics of multiple inheritance. In: Semantics of Data Types, pp. 51–68 (1984)Google Scholar
  2. 2.
    Cook, W., Palsberg, J.: A denotational semantics of inheritance and its correctness. In: Proceedings of the ACM Conference on Object-Oriented Programming: Systems, Languages and Application (OOPSLA), pp. 433–444 (1989)Google Scholar
  3. 3.
    DCMI Metadata Terms. Dublin Core Metadata Initiative (January 2005), Available at,
  4. 4.
    Dushay, N.: Localizing experience of digital content via structural metadata. In: Proceedings of the Joint Conference on Digital Libraries (JCDL 2002), pp. 244–252 (2002)Google Scholar
  5. 5.
    Introduction to Fedora Object XML. Fedora Project, Available at,
  6. 6.
    Fuhr, N.: Object-oriented and database concepts for the design of networked information retrieval systems. In: Finin, T.W., Yesha, Y., Nicholas, C. (eds.) CIKM 1992. LNCS, vol. 752, pp. 164–172. Springer, Heidelberg (1993)Google Scholar
  7. 7.
    Kahn, R., Wilensky, R.: A Framework for Distributed Digital Object Services. Corporation of National Research Initiative - Reston USA (1995), Available at,
  8. 8.
    Lagoze, C., de Sompel, H.V.: The open archives initiative: Building a low-barrier interoperability framework. In: Proceedings of the Joint Conference on Digital Libraries, JCDL 2001 (2001)Google Scholar
  9. 9.
    Lourdi, I., Papatheodorou, C.: A metadata application profile for collection-level description of digital folklore resources. In: Proceedings of the Third International workshop on Presenting and Exploring Heritage on the Web, PEH 2004 (2004); Galindo, F., Takizawa, M., Traunmüller, R. (eds.): DEXA 2004. LNCS, vol. 3180, pp. 90–94. Springer, Heidelberg (2004)Google Scholar
  10. 10.
    METS Profile Documentation. Library of CongressGoogle Scholar
  11. 11.
    METS: An Overview & Tutorial. Library of Congress (September 2004), Available at,
  12. 12.
    Data Dictionary - Technical Metadata for Digital Still Images. NISO Standards Committee (June 2002)Google Scholar
  13. 13.
    Reference Model for an Open Archival Information System (OAIS). Consultative Committee for Space Data Systems (CCSDS). Blue Book (2002)Google Scholar
  14. 14.
    Parnas, D.: On the criteria to be used in decomposing systems into modules. Communications of the ACM 15(12), 1053–1058 (1972)CrossRefGoogle Scholar
  15. 15.
    Pyrounakis, G., Saidis, K., Nikolaidou, M., Lourdi, I.: Designing an integrated digital library framework to support multiple heterogeneous collections. In: Heery, R., Lyon, L. (eds.) ECDL 2004. LNCS, vol. 3232, pp. 26–37. Springer, Heidelberg (2004)CrossRefGoogle Scholar
  16. 16.
    Resource Description Framework (RDF). World Wide Web Consortium, Available at,
  17. 17.
    Reddy, U.: Objects as closures: Abstract semantics of object-oriented languages. Proceedings of the ACM Conference on Lisp and Functional Programming, 289–297 (1988)Google Scholar
  18. 18.
    Staples, T., Wayland, R., Payette, S.: The fedora project: An open-source digital object repository management system. D-Lib Magazine 9(4) (April 2003)Google Scholar
  19. 19.
    Web Services Activity. World Wide Web Consortium, Available at,

Copyright information

© Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  • Kostas Saidis
    • 1
  • George Pyrounakis
    • 1
  • Mara Nikolaidou
    • 1
  1. 1.Libraries Computer Center, Department of Informatics and TelecommunicationsUniversity of AthensAthensGreece

Personalised recommendations