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An Approach to Defining Requirements for Exceptions

  • William Bail
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4119)

Abstract

When exception handling is required for a software system, the defining the requirements of the desired behavior in the presence of exceptional conditions is generally defined as an add-on to the core requirements. This is necessary because by definition, requirements define desired behavior, and exceptions are undesired, abnormal situations. Consequently, by using separate mechanisms to define :normal” processing and “exceptional” processing, the requirements statements do not provide a unified way of analyzing behavior, potentially allowing undesired effects during execution. This paper proposes a new approach, based on usage modeling, to unifying the specification of normal behavior and exceptional behavior into one model.

Keywords

exception handling usage models state machines requirements specification 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • William Bail
    • 1
  1. 1.Software Engineering CenterThe MITRE CorporationMcLeanUSA

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