[xwiki-dev] Charting macro

[Catalin Hritcu]

Hi Shawn,

On 2/8/07, Shawn Lauzon <lauzon at us.ibm.com> wrote:
>
> Hi Catalin,
>
> Yes, I did find that page, but it doesn't give any information on how to use
> it; just what kind of capabilities it has.
>
I just documented the most important parameters of the {chart} macro:
http://www.xwiki.org/xwiki/bin/view/Code/ChartMacro

Hope this can help you. Once the 2 small fixes we made today in the
charting plugin will be applied to xwiki.org I will also add a lot of
samples I prepared a while ago (they are all using data from tables
though). If you want to see them now you can temporary download them
here: http://www.ps.uni-sb.de/~hritcu/temp/samples.zip

> The error I'm currently getting is:
>
> java.lang.ClassNotFoundException:
> com.xpn.xwiki.plugin.charts.source.XWikiComments
>
> Which is because I'm trying to use the ObjectDataSourceFactory and I don't
> know how to use it.
Sorry, but ObjectDataSourceFactory seems not to be working any more
(don't even know if it ever did). In the most cases a table data
source should be enough.

> I've tried to view the XWiki.XWikiComments type of
> object, but it's trying to instantiate an object of that type in the
> plugin.charts.source package. I can tell from the source that I'm not using
> it as it's supposed to be used, but I can't tell how it is supposed to be
> used.
>
It was some sort of extension mechanism we devised when we first built
the plugin. Looking in retrospect it no longer seems like a good
extension mechanism. Still, the use case we had in mind then, does not
seem to be similar to what you have in mind now.

> There does seem to be at least one bug (ChartingPlugin.getName() returns
> super.getName(), when it should return "charting") which I can open an issue
> for and provide a patch, but I am guessing that that is what this bug is
> about http://jira.xwiki.org/jira/browse/XWIKI-824
>
Exactly. It was fixed today and committed on SVN :)

> Though maybe it would help to explain how I want to use it. I've got
> tracking data stored as objects on sets of pages (forms / classes /etc.) I
> want to be able to write a query which returns a set of objects, and then
> use the charting plugin to create charts based on some of the fields in
> those objects. This differs from the static tables that are in the example,
> but I hope this use case is still valid.
>
> Finally, if there's any help that I can provide, I'm certainly available.
> Thanks ...

Yes, it would be great to have this for xwiki. However, at the time
this is just not implemented. It would be great if you could help us
implementing this. I will have a look at the options we have for this
and then come back to you. Until then it would be great if you could
create a JIRA issue for this where you detail your use case.

Catalin

>
> "Catalin Hritcu" <catalin.hritcu at gmail.com> wrote on 02/08/2007 03:16:59 AM:
>
>
>  > And the link to the documentation of the plugin is this:
>  > http://old.xwiki.org/xwiki/bin/view/Dev/XWikiCharting
>  >
>  > Feel free to ask me if you have further problems/questions.
>  >
>  > Catalin
>  >
>  > On 2/8/07, Catalin Hritcu <catalin.hritcu at gmail.com> wrote:
>  > > Can you give us a more informative description of the error you are
> getting?
>  > >
>  > > Catalin
>  > >
>  > > On 2/8/07, Shawn Lauzon <lauzon at us.ibm.com> wrote:
>  > > >
>  > > > Hi all ... anyone know how to use this? It looks like there is
>  > lots of code
>  > > > out there, but I see no instructions. I played around with it enough
> to at
>  > > > least get errors from the macro, but not enough to see anything.
> Pointers
>  > > > appreciated, and I can help document if someone gives a bit of a
> push.
>  > > > Thanks ...
>  > > >
>  > > > shawn.
>  > > >
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