[sakai2-tcc] Spring 3.2 and Hibernate 3.6 upgrades (KNL-515 / KNL-517)

[Earle Nietzel]

Congratz Noah and all who helped with these important library upgrades.

There were some important bugs that were fixed by upgrading hibernate for
example
https://jira.sakaiproject.org/browse/STAT-252

Not to mention all the new goodies in Spring here is a quick recap from
Spring 2.5 to Spring 3.2 (Its a quick read)

Whats new in 3.0 (prev was 2.5)
http://static.springsource.org/spring/docs/3.2.3.RELEASE/spring-framework-reference/html/new-in-3.0.html

Whats new in 3.1
http://static.springsource.org/spring/docs/3.2.3.RELEASE/spring-framework-reference/html/new-in-3.1.html

Whats new in 3.2
http://static.springsource.org/spring/docs/3.2.3.RELEASE/spring-framework-reference/html/new-in-3.2.html

Earle


On Fri, May 31, 2013 at 8:03 AM, Noah Botimer <botimer at umich.edu> wrote:

> Hello, again.
>
> I am pleased to note that this work has finally been merged to trunk with
> good results. All tests are passing and, after resolving one bug, do not
> yet see any regressions.
>
> This does mean that you should update your trunk working copies fully and
> rebuild because most modules received some update or other.
>
> Since the original message, Spring has made two releases, so the version
> in trunk is now 3.2.3.RELEASE, which means we are fully up to date.
>
> The Hibernate version is 3.6.10.Final, which is the most recent 3.6
> release. We are not yet able to use Hibernate 4.x because of our usage of
> the Spring HibernateTemplate, which is specific to Hibernate 3.x and not
> compatible with 4.x. These uses could be ported to the native Hibernate API
> to allow us to upgrade further, though this will take some care.
>
> The bug encountered couldn't have been timed better. There was an issue in
> Lesson Builder with CLOB columns on Oracle, and some attributes were
> changed to use the "text" type (LSNBLDR-231). For Hibernate 3.5+, the new
> "materialized_clob" type should be used (LSNBLDR-236), so on day one, we
> have a perfect example of the problem and solution to what is likely to
> catch some tool developers. The new pattern is simple and actually much
> more predictable than the older pattern (and consistent on both MySQL and
> Oracle).
>
> https://jira.sakaiproject.org/browse/LSNBLDR-231
> https://jira.sakaiproject.org/browse/LSNBLDR-236
>
> Please test and watch for issues and record them in JIRA as linked to
> KNL-515 or KNL-517, depending on which components seem involved.
>
> Thanks again to those who helped in this work, especially Zach, who came
> through with a nice fix for a few things I missed.
>
> Thanks,
> -Noah
>
> On Mar 11, 2013, at 5:20 PM, Noah Botimer wrote:
>
> Hello all,
>
> I'm pleased to note the completion of upgrades to Spring 3.2.1.RELEASE and
> Hibernate 3.6.10.Final, and that preliminary testing has gone very well.
>
> But don't panic! This isn't in trunk yet; just standing by to be merged.
>
>
> There are lots of details on the tickets [1][2], but the most important
> thing is that there is very good backward compatibility. Most of the things
> you would have done in code are unchanged.
>
> Two obvious exceptions (config, not really code) to these are the
> dependencies declared (both libraries are now modular) and the universal
> use of the "materialized_clob" datatype for long text data (a consistency
> improvement, which maps a Java String to a CLOB / TEXT field, as was
> previously accomplished with string types and length limits). All known
> changes have been applied to all of the core, so you shouldn't have to
> worry too much. All tests pass nicely. Contrib maintainers: it's pretty
> straightforward for any given tool.
>
> There will be some more documentation about the specifics (say, some of
> the constant or cache region changes), but this is ready for broad testing
> now. Because nearly every module is touched, this upgrade is not in a set
> of Subversion branches (way too much work). I am maintaining them on GitHub
> and keeping a branch synchronized with trunk:
>
> https://github.com/botimer/sakai-cle/tree/spring-32
>
> I've done testing on MySQL and Oracle. Others (Sam, Aaron, Zach, Chris)
> have been testing as well, and we have found no standing regressions. So, I
> will put it to the TCC to think about the right time to apply these changes
> to trunk. I am deliberately sharing this now, after 2.9.1 has settled,
> since I think this is about the right time.
>
> I should also note that this was a big chunk of work, graciously sponsored
> by Unicon.
>
> Comments, test results, and pull requests are welcome.
>
> Thanks,
> -Noah
>
> [1] - https://jira.sakaiproject.org/browse/KNL-515
> [2] - https://jira.sakaiproject.org/browse/KNL-517
>
>
>
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