Hello, Mark -- We ran into the same problem with sequenced images in a set. Rather try to bend RELS-EXT to our will, we decided to create a STRUCT datastream that contains a METS structmap with the structure of the atomistic object, including ORDER. This approach has a couple of downsides: it means some repetition on data in both RELS-EXT and STRUCT, and the STRUCT datastream doesn't get indexed in the resource index. (But you could easily index it elsewhere, such as in Solr.) Nonetheless, for our purposes this approach worked better, especially as the STRUCT datastream has numerous other users, being the key datastream that ties our atomistic objects together.
-- Scott On 04/28/2011 04:47 AM, Asger Askov Blekinge wrote: > Hi > > What you have found is one of weaknesses in the Fedora RDF structure. > The normal way, btw, is to have each of the pages declare their page > number in a literal relation. > > Remember, a RELS-EXT relation does not have to be to another object, it > can be literal. > > so something like > > <rdf:RDF> > <rdf:Description rdf:about="info:fedora/ThisObject"> > <myNS:hasPart rdf:resource="info:fedora/TheIssue"> > <myNS:pageNr>15</myNS:pageNr> > </rdf:Description> > </rdf:RDF> > > When you do a triple store query, you will then be able to sort based on > the PageNr. > > Note, this approach does not guarantee that no the pages will have > distinct numbers in an issue. > > Regards > > > On 2011-04-28 05:47, Mark Jordan wrote: >> Hi, >> >> I'm curious to know what the conventional way of expressing ordered (i.e., >> numerically sequential) relationships between FC objects is. A typical use >> case here is a 24-page newspaper issue, where the 'issue'-level object has >> no page image datastreams but its RELS-EXT datastream points to (using a >> hasPart assetion) all 24 'page'-level objects (which each have TIFF, JPG, >> thumbnail, and text transcript datastreams). Each page object's RELS-EXT >> datastream points to the parent issue object with a isPartOf assertion. >> >> In METS, structMap div elements use the ORDER attribute to indicate sequence >> (for example of the pages in a newspaper issue). Unless I am missing >> something, the Fedora relationship ontology doesn't express sequence in >> relationships such as hasPart, and I can't find any reference to order in >> the FOXML schema or examples. >> >> If anyone can point me to some examples or documentation I've missed, I'd >> appreciate it. >> >> Mark >> >> Mark Jordan >> Head of Library Systems >> W.A.C. Bennett Library, Simon Fraser University >> Burnaby, British Columbia, V5A 1S6, Canada >> Voice: 778.782.5753 / Fax: 778.782.3023 / Skype: mark.jordan50 >> mjor...@sfu.ca >> >> >> ------------------------------------------------------------------------------ >> WhatsUp Gold - Download Free Network Management Software >> The most intuitive, comprehensive, and cost-effective network >> management toolset available today. Delivers lowest initial >> acquisition cost and overall TCO of any competing solution. >> http://p.sf.net/sfu/whatsupgold-sd >> _______________________________________________ >> Fedora-commons-users mailing list >> Fedora-commons-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/fedora-commons-users > > > ------------------------------------------------------------------------------ > WhatsUp Gold - Download Free Network Management Software > The most intuitive, comprehensive, and cost-effective network > management toolset available today. Delivers lowest initial > acquisition cost and overall TCO of any competing solution. > http://p.sf.net/sfu/whatsupgold-sd > _______________________________________________ > Fedora-commons-users mailing list > Fedora-commons-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/fedora-commons-users -- Scott Prater Library, Instructional, and Research Applications (LIRA) Division of Information Technology (DoIT) University of Wisconsin - Madison pra...@wisc.edu ------------------------------------------------------------------------------ WhatsUp Gold - Download Free Network Management Software The most intuitive, comprehensive, and cost-effective network management toolset available today. Delivers lowest initial acquisition cost and overall TCO of any competing solution. http://p.sf.net/sfu/whatsupgold-sd _______________________________________________ Fedora-commons-users mailing list Fedora-commons-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/fedora-commons-users
