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Applying Relational Algebra in 3D Graphical Software Design

  • Rudolf Berghammer
  • Alexander Fronk
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3051)

Abstract

Programming in the large is generally supported by tools allowing to design software in a graphical manner. 2D representations of object-oriented classes and their relations, such as e.g. UML diagrams, serve for automatically generating code frames and hence allow to manipulate code by manipulating these diagrams. We focus on 3D representations of various relations between classes implemented in Java. Editing these diagrams requires not only to retain correct Java code. Moreover, layout is given a meaning, and thus graphical constraints need to be considered as well to describe both the syntax and semantics of our graphical language underlying 3D representations. We model these constraints with relational algebra, and contribute to the practical employment of relational methods in computer science. The RelView system is used to efficiently check these constraints during editing operations to determine syntactically valid diagrams.

Keywords

Relational Algebra Cone Tree Editing Operation Binary Decision Diagram Java Code 
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.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2004

Authors and Affiliations

  • Rudolf Berghammer
    • 1
  • Alexander Fronk
    • 2
  1. 1.Institute of Computer Science and Applied MathematicsUniversity of KielKielGermany
  2. 2.Software Technology University of DortmundDortmundGermany

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