Hi Ludovic,

On 20 Nov 2015 at 19:30:26, Ludovic Dubost 
([email protected](mailto:[email protected])) wrote:

> On this subject, while showing 7.3 in an internal meeting, we saw that the
> Data page/space is the parent of all content pages in an AWM, but does not
> actually exist, so in the breadcrumb if you click on "Data" you get an
> error.

Thanks for reporting, see http://jira.xwiki.org/browse/XWIKI-12836#

-Vincent

> Ludovic
>  
> --*Ludovic Dubost*
> *Founder and CEO*
> [email protected]
> skype: ldubost
> Blog: http://blog.ludovic.org
>  
> On Fri, Nov 20, 2015 at 5:10 PM, Anca Luca wrote:
>  
> > On Sat, Nov 14, 2015 at 3:17 PM, [email protected]  
> > wrote:
> >
> > > Hi Anca,
> > > On 14 Nov 2015 at 10:57:24, Marius Dumitru Florea (
> > > [email protected]) wrote:
> > >
> > > Hi Anca,
> > >
> > > On Fri, Nov 13, 2015 at 8:51 PM, Anca Luca wrote:
> > >
> > > > Hello all,
> > > >
> > > > my 2 cents on the "Data" or "Entries" subspace.
> > > > ( But too late, since I see the issue was already closed :( )
> > > Thanks for taking the time to participate.
> > >
> > > > I'm afraid that, even if technically it seems like a nice idea, it's
> > not
> > > > that nice for a "regular non-developer user" which perceive an
> > > application
> > > > as only having data.
> > >
> > >
> > >
> > > > They don't need to and won't know that the code of
> > > > that application is also stored on the wiki, in another subspace that
> > is
> > > > called "Code".
> > >
> > >
> > > The Code space is still hidden so a regular user doesn't see it. There's
> > no
> > > change in this regard.
> > >
> > >
> > > > There is complaint about the size and the amount of bloat in
> > > > the XWiki URLS (the /xwiki/bin/view/ part) and this would be an extra
> > > one,
> > > > for the case of applications. I don't think url rewrite should be
> > > > considered so easily as an option because it's technically not so easy
> > to
> > > > achieve and I think that there can be an issue with colision (e.g.
> > > between
> > > > MyApp/WebPreferences and MyApp/Data/WebPreferences).
> > > >
> > >
> > > So you think having MyApp and MyAppCode is better?
> > > You need to read the whole discussion thread and see that we’ve discussed
> > > about what you said already and we’ve weighted pros and cons to decide in
> > > the end that all things considered the Code and Data subspaces were
> > > probably the best solution.
> >
> >
> > > If you think they are not, please make a proposal that you think would be
> > > better (ideally taking into account the arguments that we’ve already
> > > discussed) and we can discuss updating what’s been already done.
> > >
> >
> > Actually, I read the discussion and I re-read it now. And, depending on how
> > the "delete application data" is implemented (IIRC In the UI now) we could
> > more go for detailed delete options (by default and in the app withim
> > minutes itself). All the arguments that were brought in the discussion are
> > correct, I just think that in some of them the 80-20 rule was wrongly
> > estimated:
> > * deleting a whole application data is frequent, but not _that_ frequent
> > (20%).
> > * it was said that a url rewrite should be doable (people really bothered
> > by the Data particle should be able to do it). No, it's not that easy (less
> > than 20% of the people bothered by the Data particle can do it).
> > * less than 20% of usecases have an application within minutes that has two
> > data spaces. Actually, I am wondering how is that an app within minutes
> > still, because out of my knowledge this is not a known feature of app
> > within minutes, and it means that some customization has been done to that
> > application. For me, if an application was customized, it's still an
> > application but not "within minutes" anymore.
> > * if we're talking about applications in general, I think just as frequent
> > is the case when the same application has multiple data spaces (e.g. having
> > multiple blogs, each in a different space, in a different point in the
> > hierarchy). Having multiple subspaces in the application space would not
> > help much in this case.
> > * for the rights issue, in 80% of the cases the code authors are data
> > authors as well, there are just additional rights on the code (sub) space,
> > so it's normal that code space inherits from app space.
> > * deleting a space without some of its subspaces is a larger problem than
> > app within minutes, so a more generic solution for that could be
> > interesting. Also, I think it would be a frequent problem (80%), so having
> > a flexible solution for it can be interesting.
> >
> > Actually, the only thing on which I have a doubt that it would affect 80%
> > of the usecases is the Data particle itself in the url :) (maybe more like
> > 50-50 :D) . However, from the discussions in the thread I kind of had the
> > feeling that it being annoying is considered to fall in the 20% bucket,
> > compared to the other arguments which would be 80. I have the opposite
> > feeling, as I explained above in the bullet list.
> >
> > It's a good thing that it's configurable, though.
> >
> > In what concerns the more generic topic of best practices: In the cases of
> > larger customizations that I met so far (on non-nested spaces, though), the
> > isolation was much more important: all the code for all the applications
> > and all the customizations is in one space, in order to be able to manage
> > it together as a group (rights, UI settings, deployment, search, etc),
> > while the data was spread around in spaces that are dedicated exclusively
> > to data, potentially more data spaces for all the different areas of
> > applications coded by that code. Note that this would not fit in the case
> > of a standard app within minutes anyway. I haven't thought yet about how
> > this strategy would adapt for nested spaces, if each code space should be
> > nested under its application space or still keep it all isolated...
> >
> > Thanks,
> > Anca
> >
> >
> > >
> > > > But I guess this is really too late now...
> > > It’ s not too late. This was done recently and we can still tune things
> > if
> > > there’s a better proposal.
> > >
> > > The location where the application stores its data is configurable.
> > > What we need (and the topic of this thread) is a best practice, ie.
> > what’s
> > > used by default. We want apps by default to use these best practices,
> > even
> > > if they’re configurable (that should be the exception). So it would be
> > nice
> > > to have Anca and all the devs on this list to agree to use the best
> > > practices :)
> > >
> > > Thanks
> > >
> > > -Vincent
> > >
> > > Thanks,
> > > Marius
> > >
> > >
> > > >
> > > > Thanks,
> > > > Anca
> > > >
> > > > On Tue, Oct 27, 2015 at 11:34 AM, Guillaume "Louis-Marie" Delhumeau <
> > > > [email protected]> wrote:
> > > >
> > > > > Hello.
> > > > >
> > > > > Why not using "Entries" instead of "Data" for the name? It will be
> > > shown
> > > > > both in the URL and in the breadcrumb, and fit with most of the
> > > > use-cases.
> > > > >
> > > > > Users can still change the title of the "Entries" space to have a
> > more
> > > > > specific name such as "Ideas", "Meetings", etc...
> > > > >
> > > > > Just my 2 cents.
> > > > >
> > > > > 2015-10-26 10:45 GMT+01:00 Marius Dumitru Florea <
> > > > > [email protected]>:
> > > > >
> > > > > > On Fri, Oct 23, 2015 at 5:06 PM, Clemens Klein-Robbenhaar <
> > > > > > [email protected]> wrote:
> > > > > >
> > > > > > >
> > > > > > > > On Wed, Sep 30, 2015 at 11:16 AM, Guillaume "Louis-Marie"
> > > > Delhumeau <
> > > > > > > > [email protected]> wrote:
> > > > > > > >
> > > > > > > >> 2015-09-30 10:58 GMT+02:00 [email protected] <
> > > [email protected]
> > > > >:
> > > > > > > >>
> > > > > > > >>>
> > > > > > > >>> On 30 Sep 2015 at 10:53:48, Thomas Mortagne (
> > > > > > [email protected]
> > > > > > > >>> (mailto:[email protected])) wrote:
> > > > > > > >>>
> > > > > > > >>>> I think what I like best is some option in the refactoring
> > API
> > > > to
> > > > > > > >>>> indicate that you want to delete only final documents in the
> > > > space
> > > > > > (so
> > > > > > > >>>> skipping space home page and spaces).
> > > > > > > >>>
> > > > > > > >>> That could be interesting for some use cases but it’s risky
> > for
> > > > > this
> > > > > > > one.
> > > > > > > >>> Several apps may generate terminal pages and users could
> > create
> > > > > > > terminal
> > > > > > > >>> pages in app spaces too. So that would not just remove the
> > app
> > > > > > > technical
> > > > > > > >>> pages, it could remove more.
> > > > > > > >>>
> > > > > > > >>
> > > > > > > >> The idea of Thomas is an option to only delete *terminal*
> > pages
> > > > > > located
> > > > > > > in
> > > > > > > >> the space with a depth of 1. Said differently, the direct and
> > > > > terminal
> > > > > > > >> children of the page.
> > > > > > > >>
> > > > > > > >> This way, you can delete all data located in the space without
> > > > > > removing
> > > > > > > the
> > > > > > > >> code (because the code would be located in a deeper depth),
> > but
> > > it
> > > > > > works
> > > > > > > >> only if the app generates data as terminal pages. It is the
> > case
> > > > > right
> > > > > > > now,
> > > > > > > >> but new apps should work differently and create their data as
> > > > > regular
> > > > > > > >> Nested Pages.
> > > > > > > >>
> > > > > > > >
> > > > > > > > I don't agree at all on this later statement. New apps _may_
> > work
> > > > > > > > differently and create nested pages, but it _should_ not.
> > > > > > > > Anyway, this is why I am wondering about properly separating
> > > > WebHome,
> > > > > > > Code
> > > > > > > > and Data.
> > > > > > > > I do not think we need stable names, but the structure matter.
> > If
> > > > > Data
> > > > > > > does
> > > > > > > > not look nice, you may leave apps decide for themselves, the
> > > rules
> > > > > > being
> > > > > > > > put your data in subspaces, and code in the Code subspace, or
> > > > > something
> > > > > > > > like that. Please note that using "space" in the previous rules
> > > > looks
> > > > > > bad
> > > > > > > > to me, since we do not have space anymore ;)
> > > > > > > >
> > > > > > > [...]
> > > > > > >
> > > > > > >
> > > > > >
> > > > > > > Just another random thought: some applications might really want
> > to
> > > > > have
> > > > > > > two "data" spaces;
> > > > > > > for example currently in the blog you cannot have a category and
> > a
> > > > blog
> > > > > > > post with the same name.
> > > > > > > If both end up in their respective "subfolders" "Blog.Posts" and
> > > > > > > "Blog.Categories", the problem goes away.
> > > > > > >
> > > > > >
> > > > > > Indeed, but I don't think it contradicts the rule. IMO the best
> > > > practice
> > > > > > should be to group the application data in one or more subspaces
> > > under
> > > > > the
> > > > > > application space. If the application generates only one type of
> > data
> > > > > (e.g.
> > > > > > Events) then it makes sense to have only one Data subspace. If the
> > > > > > application generates two or more types of data (Categories and
> > > Posts)
> > > > > then
> > > > > > it may need more subspaces. The only question is whether we should
> > > > group
> > > > > > these subspaces under a Data subspace, e.g.
> > > > > >
> > > > > > App / Data / Categories
> > > > > >
> > > > > > or leave them directly under the application space:
> > > > > >
> > > > > > App / Categories
> > > > > >
> > > > > > I prefer the second option.
> > > > > >
> > > > > > Another thing to decide is whether the Data space should be named
> > > > "Data"
> > > > > or
> > > > > > some domain-specific name. Considering that we can set the title of
> > > the
> > > > > > home page to anything we want, I prefer to use "Data" as name, so
> > > that
> > > > > the
> > > > > > code deals with a generic "Data" space, even though the user sees
> > > > > "Events"
> > > > > > in the breadcrumbs.
> > > > > >
> > > > > >
> > > > > > > On the other hand if the application pages end up directly inside
> > > the
> > > > > > main
> > > > > > > page, then e.g. you cannot have a category "Code" in the Blog.
> > > > > > > (You cannot have a blog post with it either, but that might be a
> > > > > smaller
> > > > > > > nuisance)
> > > > > > >
> > > > > >
> > > > > > Good point, and another reason to group the application data in
> > > nested
> > > > > > spaces under the application space.
> > > > > >
> > > > > > Thanks,
> > > > > > Marius
> > > _______________________________________________
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