April 2013
Intermediate to advanced
364 pages
8h 51m
English
Content preview from Programming GrailsBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 12. Upgrading Applications and Plugins
New Grails versions are released fairly often, and they always contain bug fixes and new features that you probably want to have available in your applications and plugins. You might not be able to upgrade for every release, but you shouldn’t get too far out of date. We try our best to limit breaking changes and other changes that will make upgrading harder, but sometimes progress has its costs.
Grails does have an upgrade script, but it doesn’t do all of the work needed to upgrade between versions, and will likely be removed or at least renamed in a future version of Grails, because the name is a bit misleading. It is useful in some respects, but there will always be manual steps involved in upgrading to a newer version of Grails.
So what does the upgrade script do? There are a few fixes for very old (pre-1.0) applications:
- Delete basedir/plugins/core (core taglibs are now part of Grails, not files in the application)
- Move basedir/grails-tests test classes to test/integration
- Delete basedir/tmp
- Move basedir/spring and basedir/hibernate under basedir/grails-app/conf
and there are fixes for all versions:
- Copy current static resources (images, CSS, JS) to basedir/web-app
- Replace basedir/web-app/WEB-INF/sitemesh.xml and basedir/web-app/WEB-INF/applicationContext.xml with the latest versions
- Copy current *.tld files to basedir/web-app/WEB-INF/tld
- Create missing grails-app/conf files (Config.groovy, BuildConfig.groovy, DataSource.groovy ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.