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From Lukasz Lenart <lukaszlen...@apache.org>
Subject Re: Sharing common groupId
Date Thu, 17 Nov 2016 22:38:54 GMT
2016-11-16 13:00 GMT+01:00 sebb <sebbaz@gmail.com>:
> On 16 November 2016 at 10:10, Lukasz Lenart <lukaszlenart@apache.org> wrote:
>> Hi,
>> I would like to know if there is any problem if multiple different
>> projects shares the same groupId? I meant, we would like to allow
>> third parties to use common groupId as mentioned in the post below
>> http://markmail.org/message/yruabvlfpfdfw6w5
>> Can this be a problem during publishing artifacts?
> Yes. It can cause severe problems.
> Maven uses the (groupId,artifactId) pair to determine which jars can
> appear on the same classpath.
> Unless all the projects sharing the groupId ensure that they use
> distinct artifact Ids this can result in jar hell.
> The simplest way to ensure distinct (groupId,artifactId) pairs is to
> ensure each independent project uses different groupIds.
> They can then maintain their own unique list of artifactIds.

So this should work, it's just a manner of controlling who can use the
shared groupId and artifactId. We (Struts PMC) can accept if a given
external project can use the groupId or not and this will give us a
way to control if (groupId,artifactId) is distinct. Does it make

+ 48 606 323 122 http://www.lenart.org.pl/

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