[Building Sakai] Spring 3.2 and Hibernate 3.6 upgrades (KNL-515 / KNL-517)

[Nguni Phakela]

Hi,

I updated sakai trunk and the build is successful. It has spring 3.2.3 and
Hibernate 3.6.10 final now.

Thank you for the efforts. Will start experimenting with the new changes in
spring in my tool.

Cheers,
Nguni


On Fri, May 31, 2013 at 2:03 PM, 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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-- 
Nguni Phakela
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