On Tue, Aug 28, 2012 at 4:20 PM, Vincent Massol <[email protected]> wrote:
>
> On Aug 28, 2012, at 3:44 PM, Thomas Mortagne <[email protected]> 
> wrote:
>
>> On Tue, Aug 28, 2012 at 3:35 PM, Vincent Massol <[email protected]> wrote:
>>>
>>> On Aug 28, 2012, at 3:31 PM, Thomas Mortagne <[email protected]> 
>>> wrote:
>>>
>>>> On Tue, Aug 28, 2012 at 3:23 PM, Thomas Mortagne
>>>> <[email protected]> wrote:
>>>>> On Tue, Aug 28, 2012 at 3:18 PM, Vincent Massol <[email protected]> 
>>>>> wrote:
>>>>>>
>>>>>> On Aug 28, 2012, at 2:50 PM, Thomas Mortagne <[email protected]> 
>>>>>> wrote:
>>>>>>
>>>>>>> On Tue, Aug 28, 2012 at 1:37 PM, Vincent Massol <[email protected]> 
>>>>>>> wrote:
>>>>>>>>
>>>>>>>> On Aug 28, 2012, at 1:15 PM, Thomas Mortagne 
>>>>>>>> <[email protected]> wrote:
>>>>>>>>
>>>>>>>>> Hi guys,
>>>>>>>>>
>>>>>>>>> I would like to modify a bit the Maven XAR plugin to add in the
>>>>>>>>> package.xml some extension related informations like the extension id
>>>>>>>>> and version at the very least.
>>>>>>>>
>>>>>>>> Why not package the pom.xml instead in META-INF/maven/* as it's done 
>>>>>>>> by the Maven JAR plugin?
>>>>>>>
>>>>>>> Because it's not supposed as part of XAR format by existing XAR
>>>>>>> parser, you will get an error because it will fail to parse it as a
>>>>>>> document. The proposal here is to use something that already exists,
>>>>>>> does not break anything and is very easy to do.
>>>>>>
>>>>>> I personally much prefer to add META-INF support over changing the 
>>>>>> package.xml format because it's much better aligned with all other 
>>>>>> formats like JAR, EAR, WAR, etc and with the way we handle JAR 
>>>>>> extensions.
>>>>>
>>>>> I think you don't understand what I mean here. The issue is not that
>>>>> it's complex to support it, adding support in 4.2 for META-INF will
>>>>> not change the fact that you will get an error in older version with
>>>>> your XAR.
>>>>>
>>>>>>
>>>>>> It doesn't look complex to add either, it's a matter of excluding 
>>>>>> META-INF files from the parser and to use the Maven Archiver (see 
>>>>>> http://maven.apache.org/shared/maven-archiver/).
>>>>
>>>> Making the XAR format depends on Maven is not exactly something
>>>> generic or even very nice. Core extension scanner is looking at the
>>>> pom located in jar file among other things in order to find as much as
>>>> it can but lets not forget that this is a hack and nothing else.
>>>
>>> Whatever the solution we need consistency IMO. If your proposal is to 
>>> create an extension.xml file located in META-INF/xwiki and that we would 
>>> put in all our extension types then I'm all for it too.
>>>
>>> I don't like mixing extension information with packaging information. For 
>>> me package.xml shouldn't contain extension information.
>>
>> It's exactly the same thing. The package.xml file is the XAR way to
>> provide informations about the file and is generated from the pom.xml.
>> It already provide the a subset of extension informations (name,
>> version, license,  etc.) so the proposal here is about adding more
>> things.
>
> For me the package.xml should probably even be removed or at least a lot of 
> information should be removed. There's no point in listing the files 
> explicitly for example. Same for whether it's a backup pack or not.
>
> And a lot of the information currently in package.xml should be moved to 
> META-INF/xwiki/extension.xml such as author, license, version, name, 
> description.
>
> So I'm definitely with you about creating a XWiki-specific descriptor (not 
> tied to maven) located in META-INF/xwiki/extension.xml for all our 
> extensions, but beefing up package.xml goes in the wrong direction IMO.
>
> At the very least I'd like that we agree about where we'd like to go (I've 
> made a proposal with META-INF/xwiki/extension.xml) and then discuss how to 
> get there and what it takes. If it means going through intermediary steps, 
> then fine, the important part for me being to agree on where we want to go.

Maybe but that's a different subject and IMO it sounds like creating a
new packaging format for wiki pages. I need something for 4.2 and
adding the id in package.xml along with the other existing extension
informations is quick, easy, fully retro compatible and does not
really introduce anything new.

>
> Thanks
> -Vincent
>
>>> Thanks
>>> -Vincent
>>>
>>>>>> Thanks
>>>>>> -Vincent
>>>>>>
>>>>>>>> It would be more generic and similar to how JARs are handled.
>>>>>>>>
>>>>>>>> Thanks
>>>>>>>> -Vincent
>>>>>>>>
>>>>>>>>> The idea is to be able to know what a XAR is exactly like we have the
>>>>>>>>> pom.xml packaged with the jar file for example.
>>>>>>>>>
>>>>>>>>> Among other things it will cover the following use cases:
>>>>>>>>> * when someone import a XAR with the standard UI, automatically
>>>>>>>>> register it in the extension index if it happen to be an extension
>>>>>>>>> (i.e. if we find extension informations in its package.xml)
>>>>>>>>> * wiki manager and workspaces can properly register actual extension
>>>>>>>>> when creating their default template from a XAR the first time (this
>>>>>>>>> is for example required to be able to upgrade a farm with EM where
>>>>>>>>> pretty much all the wiki as been created from this default template)
>>>>>>>>>
>>>>>>>>> In both cases the idea is to support as much current behaviours as we
>>>>>>>>> can and still be able to use the full power of Extension Manager.
>>>>>>>>>
>>>>>>>>> There should not be any backward compatibility issue here since it
>>>>>>>>> does not really change anything in the XAR structure.
>>>>>>>>>
>>>>>>>>> WDYT ?
>>>>>>>>>
>>>>>>>>> Here is my +1
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-- 
Thomas Mortagne
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