[Cubicweb] About cwuri

Aurélien Campéas aurelien.campeas at logilab.fr
Wed Feb 12 15:51:36 CET 2014

Dear List,

While reviewing https://www.cubicweb.org/ticket/3390388 and some other
cwuri-related issues, along with working on the container cloning
feature, it occurred to me that I didn't know what cwuris are.

Digging in the doc, I read this:

  Reference URL of the entity, which is not expected to change.

(in devrepo/datamodel/metadata.rst).

This is troubling. It seems we are storing in the database, for each
single entity, something of the form `http://someurl/eid`.

The implementation suggests that the base url is config.base_url,
which is hence instance config dependant.

This contradicts the "not expected to change" part of the spec.

Moreover, I strongly object to storing in the database a second primary
key (we already have eids) with a component that may actually change
and is sometimes not even defined.

My current conclusion is that the cwuri attribute is misdesigned
and does not belong to the database.


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