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Kava - A Reflective Java Based on Bytecode Rewriting

  • Ian Welch
  • Robert J. Stroud
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1826)

Abstract

Current implementations of reflective Java typically either require access to source code, or require a modified Java platform. This makes them unsuitable for applying reflection to Commercial-off-the-Shelf (COTS) systems. The high level nature of Java bytecode makes on-the-fly rewritings of class files feasible and this has been exploited by a number of authors. However, in practice working at bytecode level is error prone and leads to fragile code. We propose using metaobject protocols in order to specify behavioural changes and use standard bytecode rewritings to implement the changes. We have developed a reflective Java called Kava that provides behavioural runtime reflection through the use of bytecode rewriting of Java classes. In this paper we discuss the binary rewriting approach, provide an overview of the Kava system and provide an example of an application of Kava.

Keywords

Source Code Java Class Method Invocation Java Implementation Code Instruction 
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 2000

Authors and Affiliations

  • Ian Welch
    • 1
  • Robert J. Stroud
    • 1
  1. 1.University of Newcastle-upon-TyneUK

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