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Chapter 10 - Troubleshooting

Published online by Cambridge University Press:  11 January 2010

Joseph Pelrine
Affiliation:
Daedalos Consulting
Alan Knight
Affiliation:
Object Technology International, Ottawa
Adrian Cho
Affiliation:
Object Technology International, Ottawa
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Summary

This is the chapter to read when you have trouble. We'll discuss dealing with components that won't load, recovering from simple image crashes as well as more complex ENVY crashes, and what you can do to make recovery easier. We'll also discuss more generic project troubleshooting to help you identify potential ENVY-related problems in a project, and suggest some possible remedies. The main topics we won't discuss here are installation and configuration problems, which we covered in Chapter 1.

Component Loading

One of the most common ENVY problems is that component editions will not load. A load may fail for many reasons. Two of the most common reasons are that a component cannot be constructed in the image (for example, the source for a method cannot be compiled or a required superclass is missing), or that loading a component results in the image being inconsistent (for example, a subapplication, class, or method would exist in two different places).

You have three main approaches to correcting a load failure, depending on the situation:

  1. ▪ altering an ENVY system setting that affects loading behavior

  2. ▪ modifying the component editions being loaded

  3. ▪ modifying the image

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Chapter
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Publisher: Cambridge University Press
Print publication year: 2001

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  • Troubleshooting
  • Joseph Pelrine, Daedalos Consulting, Alan Knight, Object Technology International, Ottawa, Adrian Cho, Object Technology International, Ottawa
  • Book: Mastering ENVY/Developer
  • Online publication: 11 January 2010
  • Chapter DOI: https://doi.org/10.1017/CBO9780511583926.012
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  • Troubleshooting
  • Joseph Pelrine, Daedalos Consulting, Alan Knight, Object Technology International, Ottawa, Adrian Cho, Object Technology International, Ottawa
  • Book: Mastering ENVY/Developer
  • Online publication: 11 January 2010
  • Chapter DOI: https://doi.org/10.1017/CBO9780511583926.012
Available formats
×

Save book to Google Drive

To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.

  • Troubleshooting
  • Joseph Pelrine, Daedalos Consulting, Alan Knight, Object Technology International, Ottawa, Adrian Cho, Object Technology International, Ottawa
  • Book: Mastering ENVY/Developer
  • Online publication: 11 January 2010
  • Chapter DOI: https://doi.org/10.1017/CBO9780511583926.012
Available formats
×