On Sep 5, 2008, at 12:30 PM, Vincent Massol wrote:

>
> On Sep 5, 2008, at 12:22 PM, Jean-Vincent Drean wrote:
>
>> On Fri, Sep 5, 2008 at 12:17 PM, Vincent Massol <[EMAIL PROTECTED]>
>> wrote:
>>>>
>>>> At first sight I'd say that using objects (including current tag
>>>> feature) would lead to complex queries.
>>>
>>> Yes but that's an API problem not a design one.
>>>
>>> If our API makes it complex to do queries on objects then we should
>>> fix it.  Not do workarounds! Because if we do this then we
>>> acknowledge
>>> that the whole foundation of XWiki is bad (i.e. Class/Objects don't
>>> work). That would be a shame :)
>>>
>>
>> I was thinking about performance too, I've added "at first sight"
>> because I'm not sure it would be noticeable.
>
> Same comment as above... :)
>
> We should check this since querying objects shouldn't cause any
> performance hit or we'll have problems since xwiki is all about adding
> objects.
>
> But at least do we agree that the way to add metadata to document is
> by using objects?
>
> Question: I've also added a syntaxId field in XWikiDocument a while
> back to support the different syntaxes. That should also be a good
> candidate for an Object.

Note that if it were an object we would be able to use the object  
viewer/editor to modify it's values. I think this would require a UI  
change so that modifying objects could be done easily in edit mode (in  
a panel on the right).

If we had this then maybe the notion of Language and Parent could be  
reimplemented as Objects too.

So do we want to go in the full direction of Objects. I think it would  
make a lot of sense and would lead to some very homogeneous design.

Now are there any drawbacks? So far I've heard those that I think are  
fixable:
- performance hit
- complex queries
- no permissions on objects

Any others?

Thanks
-Vincent

>
>
> I think all that's left to do is clarify the relationship between
> Objects and XWiki core (i.e. Objects used by xwiki core):
> - should they be created automatically by xwiki core if they don't
> exist (class + object),
> - should they not be created by have default values configured in
> xwiki's configuration
> - should they be created on first query if not found?
>
> Thanks
> -Vincent
_______________________________________________
devs mailing list
[email protected]
http://lists.xwiki.org/mailman/listinfo/devs

Reply via email to