Hi Sven, Try starting from the Persistence section of the architecture wiki:
https://wiki.jenkins-ci.org/display/JENKINS/Architecture That has links to lead to good tips related to evolving data structures. -- Dean From: Hans Dampf <[email protected]<mailto:[email protected]>> Reply-To: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Date: Monday, February 25, 2013 5:14 AM To: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Subject: How to purge serialized descriptor data on plugin update Hi all, after some years I refactored my SCM plugin: https://github.com/weltraumschaf/darcs-plugin One refactoring was to extract the class DarcsScm$DescriptorImpl in a separate class. Because I like smaller class more in sake of good software design etc. pp. But now I have the problem on updating the plugin Jenkins try to find DarcsScm$DescriptorImpl on start up. Although I changed the DarcsScm#serialVersionUid. I found that there is a file 'org.jenkinsci.plugins.darcs.xml' in the Jenkins root directory which references to the class name in the root XML tag. If I delete that file Jenkins starts and the plugin installs clean. But this is no good usability tell the plugin users to delete that file before upgrading. Is there a hook or something like that, where I can trigger deletion/regeneration of this file on plugin installation? I don't want to put the descriptor claqss back into the plugin class because this will lead to messy code (> 700 LOCs). AFAIK is it a problem with Java serialisation at this point. I will have same problems if I delete, rename, add properties to the DarcsScm class. What is the best and most clean approach to refactor such a serializable plugin class? I tried to find information about that topic in the net, but found only genereall not Jenkins related topics. What are the keywyrds to find more information about this serialisation stuff in Jenkins? Why is DarcsScm clas sserialiszed? What is the purpose? kind regards Sven -- You received this message because you are subscribed to the Google Groups "Jenkins Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]<mailto:[email protected]>. For more options, visit https://groups.google.com/groups/opt_out. -- You received this message because you are subscribed to the Google Groups "Jenkins Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
