[sakai-pmc] [Building Sakai] Lazy consensus proposal to branch Sakai 10

[Steve Swinsburg]

Yes, ical4j requires this library as it still supports older version of Java. The library is a backport of the java.util.concurrent classes. It’s not ‘crazy’ since they are scoped to a completely different package and won’t be used by anything unless explicitly called. So I think the objection is unfounded.

See here for more details:

http://backport-jsr166.sourceforge.net/robustness.php
"The backport has been around since December 2004. It has been downloaded tens of thousands of times. It has been successfully used in many open-source and commercial projects. Arguably, it has become a de-facto standard concurrency library for Java 1.4, and by now, it is very well tested by its users.

Moreover, the backport is based on a very stable and robust code base of JSR 166 and dl.util.concurrent. This partially explains why so few bugs have been reported against it. Once again, I would like to express gratitude to the JSR 166 expert group for doing such a great job, and for their commitment to open source."

So IMO its a valid addition. Feel free to lobby ical4j to update their dependencies though.

regards,
Steve




On 8 Feb 2014, at 4:59 am, Matthew Buckett <matthew.buckett at it.ox.ac.uk> wrote:

> On 7 February 2014 17:16, Matthew Jones <matthew at longsight.com> wrote:
> Well for the backport-utils, we should just need to add an exclusion to the ical4j dependency, as that's not needed on java 5+ as has been stated. 
> 
> <exclusion> 
>   <artifactId>backport-util-concurrent</artifactId> 
>   <groupId>backport-util-concurrent</groupId> 
> </exclusion>
> 
> I think ical4j binds directly against backport-util-concurrent as you can see when they switched to using the JDK 5 ones directly:
> 
> https://github.com/ical4j/ical4j/commit/9f2ed5ba1dac64b3d86a9eef40f8e7af4056f42a
> 
> -- 
>   Matthew Buckett, VLE Developer, IT Services, University of Oxford
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