Technically it should not cause any issue. The only think I can think
of is some people expecting this id to be a XAR and trying to installi
it.

On Thu, Mar 19, 2015 at 11:15 AM, Jean SIMARD <[email protected]> wrote:
> OK, thank you for the precision.  Just one last question on this topic:
> is this relocation will cause any problem since the module
> [application-forum] we are moving into a submodule
> [application-forum-ui] will still exists (because [application-forum]
> will be now the parent POM, not the XAR anymore).
> Another way of saying it, we transform the original XAR
> groupId/artifactId into a POM (and the sources of the XAR are moved into
> another groupId/artifactId).
>
> Thanks,
>
> On 19/03/2015 10:54, [email protected] wrote:
>> Hi Jean,
>>
>> On 19 Mar 2015 at 10:46:22, Jean SIMARD 
>> ([email protected](mailto:[email protected])) wrote:
>>
>>> OK, but if we don't keep track of the relocation of groupId/artifactId,
>>> I wonder how you will be able to manage the upgrade (since it seems it
>>> is a topic you and Vincent are interested in). Am I missing something?
>>> Should I put this information in another way somewhere in the root POM
>>> or in another file?
>>
>> Yes I wasn’t talking about Maven Relocation but about XWiki’s EM relocation 
>> (aka alias or extension features).
>>
>> This is how to indicate a relocation in our pom.xml:
>>
>>   <properties>
>>     <xwiki.extension.features>
>>       <!-- Old names of this module used for retro compatibility when 
>> resolving dependencies of old extensions -->
>>       org.xwiki.platform:xwiki-platform-workspace-template-features
>>     </xwiki.extension.features>
>>   </properties>
>>
>> Thanks
>> -Vincent
>>
>> PS: Side note: I’ve never understood why Thomas decided to use the 
>> “features” terminology for relocation. Maybe you can explain what you had in 
>> mind Thomas? :)
>>
>>> Sincerely,
>>>
>>> On 19/03/2015 10:41, Thomas Mortagne wrote:
>>>> Vincent was not really talking about Maven relocation specifically but
>>>> simply how to EM can find the new version of an extension that changed
>>>> its id.
>>>>
>>>> On Thu, Mar 19, 2015 at 10:39 AM, Jean SIMARD wrote:
>>>>> Hi Vincent,
>>>>>
>>>>> I'd like to have more precision on the "relocation" you're talking about.
>>>>>
>>>>> For example, we have this at the moment
>>>>>
>>>>> + application-forum
>>>>> | + pom.xml
>>>>> ->org.xwiki.contrib.forum:application-forum [xar]
>>>>>
>>>>> We'd like to transform the hierarchy of Maven modules/submodules into
>>>>> the following structure
>>>>>
>>>>> + application-forum
>>>>> | + pom.xml -> [pom]
>>>>> | + application-forum-ui/
>>>>> | | + pom.xml -> [xar]
>>>>> | + application-forum-test/
>>>>> | | + pom.xml -> [pom]
>>>>> | | + application-forum-test-pageobjects/
>>>>> | | | + pom.xml -> [jar]
>>>>> | | | + src/
>>>>> | | + application-forum-test-tests/
>>>>> | | | + pom.xml -> [jar]
>>>>> | | | + src/
>>>>>
>>>>> But now, I'm looking at relocation guide on Maven
>>>>>
>>>>> https://maven.apache.org/guides/mini/guide-relocation.html#How_to_relocate_a_Maven_2_artifact_to_a_different_groupId
>>>>>
>>>>> and I'm not sure of what I need to do. From the link, I understand that
>>>>> I should do another pom.xml for each old release. Let say I will take
>>>>> care only of the last release at the moment (1.9.3 for Forum App). Then
>>>>> I should add a submodule to the root that looks like the following?
>>>>>
>>>>> + application-forum
>>>>> | + pom.xml -> [pom]
>>>>> | ...
>>>>> | + application-forum-1.9.3
>>>>> | | + pom.xml -> [xar?] (see below for the content)
>>>>>
>>>>> pom.xml
>>>>> -----
>>>>>
>>>>> 4.0.0
>>>>> org.xwiki.contrib.forum
>>>>> application-forum
>>>>> 1.9.3
>>>>>
>>>>>
>>>>> application-forum-ui
>>>>>
>>>>>
>>>>>
>>>>> -----
>>>>>
>>>>> Thanks,
>>>>>
>>>>> On 19/03/2015 09:08, [email protected] wrote:
>>>>>> Hi Caty,
>>>>>>
>>>>>> See below.
>>>>>>
>>>>>> On 18 Mar 2015 at 19:29:17, Ecaterina Moraru (Valica) 
>>>>>> ([email protected](mailto:[email protected])) wrote:
>>>>>>
>>>>>>> Hi,
>>>>>>>
>>>>>>> I want to write automated tests for some contrib applications, but I 
>>>>>>> need
>>>>>>> you help on some questions.
>>>>>>>
>>>>>>> == Prb 1. Folder Structure + Changing IDs ==
>>>>>>>
>>>>>>> Currently the majority of applications don't have modules.
>>>>>>
>>>>>> You mean submodules I guess since they’re a module (maven module) 
>>>>>> themselves.
>>>>>>
>>>>>>> Also some applications have IDs that don't correspond with the contrib
>>>>>>> standard: sometimes wrong groupId like 'org.xwiki.contrib.forum', 
>>>>>>> sometimes
>>>>>>> random artifactId.
>>>>>>
>>>>>> Why would ‘org.xwiki.contrib.forum’ be a wrong group id?
>>>>>>
>>>>>> The rule is defined here 
>>>>>> http://contrib.xwiki.org/xwiki/bin/view/Main/WebHome#HHostingtools and a 
>>>>>> module can have org.xwiki.contrib or org.xwiki.contrib..
>>>>>>
>>>>>>> When wanting to change the groupId for 'org.xwiki.contrib.forum' I was 
>>>>>>> told
>>>>>>> that we should change it only if we have a very good reason, otherwise
>>>>>>> changing the ID will resolve in upgrading problems within the Extension
>>>>>>> Manager. Unfortunately I don't remember exactly the problem with the
>>>>>>> changing of the ID, I just know I don't need to do it :) (//sorry 
>>>>>>> Thomas)
>>>>>>
>>>>>> We support relocation so the extension id (groupId+artifactId) can 
>>>>>> change. The only negative effect is that XWiki will not propose an 
>>>>>> upgrade automatically when the new version comes out with a new 
>>>>>> extensionId. (I’d love to brainstorm about finding ways to handle this 
>>>>>> with Thomas though).
>>>>>>
>>>>>>> Example: https://github.com/xwiki-contrib/application-forum
>>>>>>> Theoretically, wanting to add tests I would need to create two modules:
>>>>>>> - application-forum-test
>>>>>>> - application-forum-ui, and move the current sources here.
>>>>>>> Unfortunately this means a change in the ID.
>>>>>>>
>>>>>>> Are 'adding tests' a good reason to change the ID?
>>>>>>> Should I not change the ID, and just add a test module?
>>>>>>> - application-forum-test
>>>>>>> - src/main/resources
>>>>>>
>>>>>> I’m in favor of changing the extension id and add relocation (it was 
>>>>>> done for this purpose). This is what we did in xwiki-platform for a lot 
>>>>>> of modules.
>>>>>>
>>>>>>> == Prb 2. Naming standards ==
>>>>>>>
>>>>>>> We have some conventions on contrib.xwiki.org about name of the project.
>>>>>>> We should add maybe some more examples on groupId and artifactId.
>>>>>>>
>>>>>>> Also when looking at the test modules names, some applications have:
>>>>>>> - {{full-repository-name}}-tests
>>>>>>> - {{full-repository-name}}-test
>>>>>>> - {{partial-repository-name}}-test
>>>>>>> - {{random-repository-name}}-test
>>>>>>> - test
>>>>>>
>>>>>> Where? AFAIK I’ve been the one doing most of the tests relocation in 
>>>>>> xwiki-platform and our naming rule has always been the same. For example:
>>>>>>
>>>>>> xwiki-platform-faq-test/
>>>>>> |_ xwiki-platform-faq-test-tests/
>>>>>> |_ …
>>>>>>
>>>>>>> Maybe we should agree also on this and document it.
>>>>>>> I guess the correct name would be:
>>>>>>> - {{full-repository-name}}-test
>>>>>>> -- {{full-repository-name}}-test-pageobjects
>>>>>>> -- {{full-repository-name}}-test-tests
>>>>>>> - {{full-repository-name}}-ui
>>>>>>
>>>>>> Yes. Some conventions are already documented here:
>>>>>> http://dev.xwiki.org/xwiki/bin/view/Community/DevelopmentPractices#HBuildBestPractices
>>>>>>
>>>>>>> Also if we are 'discovering' some applications that don't correspond to 
>>>>>>> the
>>>>>>> standard, do we change them or do we let them be? Since changing means a
>>>>>>> change in the ID :P
>>>>>>
>>>>>> I’d say we change them.
>>>>>>
>>>>>>> Since in theory we should have automated tests for all our applications,
>>>>>>> should we add a convention to always create a
>>>>>>> - {{full-repository-name}}-ui ?
>>>>>>
>>>>>> Yes. This is what I do when I create a new "top level" module.
>>>>>>
>>>>>>> Additional question: Also when we will transfer from platform to 
>>>>>>> contrib,
>>>>>>> are we going to rename the modules?
>>>>>>
>>>>>> I think we discussed this and we said we would change the id but not 
>>>>>> change the package names for now to not break backward compat. Would 
>>>>>> need to read again the mail thread. In any case we still have some 
>>>>>> decisions to make on that. I’ve been wanting to do this move but first I 
>>>>>> wanted to implement the cleanup/removal of xwiki-enterprise to make way 
>>>>>> for flavors.
>>>>>>
>>>>>> Thanks
>>>>>> -Vincent
>>>>>>
>> _______________________________________________
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>>
>
> --
> Jean Simard
> [email protected]
> Research engineer at XWiki SAS
> http://www.xwiki.com
> Committer on the XWiki.org project
> http://www.xwiki.org
> _______________________________________________
> devs mailing list
> [email protected]
> http://lists.xwiki.org/mailman/listinfo/devs



-- 
Thomas Mortagne
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