[Kolab-devel] UIDs as url with urn::uuid::

[Christian Mollekopf]

On 2012-03-14 16:50, Thomas Brüderli wrote:
> Christian Mollekopf wrote:
>> Hey Thomas,
>>
>> Yes, my "solution" was too sloppy. The reason is that xcard mandates 
>> an
>> uri scheme, not xCal though.
>> You are right that this is an implementation detail, and should be
>> hidden in the conversion code.
>> So I will add/remove the urn::uuid:: prefix internally.
>
> Perfect!
>
> But that doesn't solve the issue when other UIDs (e.g. from old Kolab
> objects) are used because something like
> "20101025160559.58545uuutb65kgsg at localhost" doesn't conform to the 
> UID
> scheme AFAIK. Any suggestions how to handle this case?
>

I suppose I can add uri conforming encoding internally.

Cheers,
Christian

> ~Thomas
>
>>
>> On 2012-03-14 12:21, Thomas Brüderli wrote:
>>> Hello Christian
>>>
>>> I have another question about UIDs in libkolabxml. The lib offers
>>> getters
>>> and setters for object UIDs and they're also generated 
>>> automatically
>>> for
>>> new objects. They are saved as URIs with the urn::uuid:: prefix in
>>> the xml.
>>>
>>> Now I was wondering whether the urn::uuid:: prefix is actually part
>>> of the
>>> UID or is it just the protocol used for conforming the spec?
>>> Currently the
>>> complete string is returned by uid() and I can also set an 
>>> arbitrary
>>> string
>>> without the prefix with setUid() which will result in an invalid 
>>> URI
>>> saved
>>> in the XML block. For the IMAP storage we also save the UID in the
>>> message
>>> subject and use it for searching. This currently also includes the
>>> urn::uuid: prefix.
>>>
>>> I think the setters and getters of the lib should handle pure UIDs
>>> without
>>> the urn prefix but rather add it when saving (to conform with the
>>> spec of
>>> the UID field being represented as an URI) and remove it when 
>>> reading
>>> the
>>> format.
>>>
>>> Here's an example of converting from the old Kolab format:
>>> I have an object with UID 
>>> 20101025160559.58545uuutb65kgsg at localhost.
>>> This
>>> results in
>>> <uid><uri>20101025160559.58545uuutb65kgsg at localhost</uri></uid>
>>> when saving into the new format which is IMO not correct. Without
>>> changing
>>> UIDs of a converted object this should rather result in
>>> <uid><text>20101025160559.58545uuutb65kgsg at localhost</text></uid>
>>>
>>> What was the reason to use URIs for saving UIDs anyways?
>>>
>>> Regards,
>>> Thomas
>>>
>>> _______________________________________________
>>> Kolab-devel mailing list
>>> Kolab-devel at kolab.org
>>> https://www.intevation.de/mailman/listinfo/kolab-devel
>>
>
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-- 
Christian Mollekopf
Software Engineer

Kolab Systems AG
Zürich, Switzerland

e: mollekopf at kolabsys.com
w: http://kolabsys.com

pgp: EA657400 Christian Mollekopf