2007/5/1, Evgeny Egorochkin <<a href="mailto:phreedom.stdin@gmail.com">phreedom.stdin@gmail.com</a>>:<div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> On Tuesday 01 May 2007 21:47:42 Mikkel Kamstrup Erlandsen wrote: > 2007/5/1, Evgeny Egorochkin <<a href="mailto:phreedom.stdin@gmail.com">phreedom.stdin@gmail.com</a>>: > > On Tuesday 01 May 2007 17:55:26 Mikkel Kamstrup Erlandsen wrote: > > > > > $MIN_CARDINALITY > > > > > > > > > > >   Minimum cardinality. Minimum number of properties of this type > > > > you > > > > > > must > > > > > > > > > > set > > > > > > for a given file. > > > > > >   Lets specify mandatory properties. Default is 0. > > > > > > > > > > Is there any example of a mandatory property? Does it even make > > > > sense? > > > > > > File name or URI? > > > > > > I don't see why they have to be mandatory. Not everything comes from a > > > file. > > > > > > In the search API it is specifically avoided to use global identifiers > > > > for > > > > > objects - as fx a mandatory uri would be. My opinion is that we > > > > shouldn't > > > > > *force* URIs or any mandatory property onto any object. > > > > The intent of this was to make life easier for apps by guaranteeing > > existence > > of some basic properties, however I do agree that the list would be > > extremely > > short if not non-existent. > > Also taking URI as an example, you would need to enforce that it actually > contains a valid uri or else it would be useless anyway. We could add > another type called "uri" which guarantees that the values form a valid > uri. I don't think we should guarantee that any fields are indeed set > though. At this moment it makes sense to drop minCardinality. It can be added later if needed. Another issue worth considering in the perspective is units.</blockquote><div> Units... I stumbled across that a while ago, but haven't given it much thought. I think that it might be just as confusing as it useful - also it is a new requirement to meet the standard (that might or might not be trivial to add). </div> <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">IMHO We should finalize the first edition of the standard and extend it if the need arises.</blockquote><div> Yes, but we shouldn't paint our selves into a corner :-) </div> <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> I find it strange that nobody else comments on this. Perhaps everybody agree :)</blockquote><div> Hehe, I can bet you that not everybody agrees :-) Most of the other involved persons are core maintainers of search engines so are pretty stressed out already... </div> Cheers, Mikkel </div>