I agree with Adam -- verifying that objects are bound to valid Content Models before attempting to run their disseminations is another useful mechanism to maintain referential integrity among Fedora objects, not just at ingest time, but also after updates.
-- Scott aj...@virginia.edu wrote: >> If a) were already implemented (particularly if we said that a hasService >> relationship means a hasModel->FedoraContentModel-3.0 relationship must also >> exist), I'm not sure c) would add any value...just code. But I haven't had >> my coffee yet...I might be missing something. > > It's admittedly not likely, but the additional code would cover the case > where someone _had_ a valid content model in a repo, and then broke it by > doing something odd to its RELS-EXT. I can dimly imagine doing something like > that by executing a poorly-designed batch change to the RELS-EXTs of a number > of objects. > > --- > A. Soroka > Digital Research and Scholarship R & D > the University of Virginia Library > > > > On Oct 29, 2010, at 10:26 AM, Chris Wilper wrote: > >> Hi Steve, >> >>> (a) when ingesting content model objects, should we enforce a RELS-EXT >>> assertion to a valid content model for content model objects? or >>> (b) should we create a Resource Index triple identifying the >>> fedora-system:ContentModel-3.0 as a default for content model objects when >>> none is specified in RELS-EXT? >> I think a) would be better, as b) would be too surprising for most >> people. The challenge, as you noted, is how to infer that an object >> was intended to be a cmodel if it doesn't correctly indicate it via >> the hasModel relationship. Two obvious things to check are the >> existanence of the DS_COMPOSITE_MODEL datastream and the existance of >> the hasService relation. If either is present, there is an >> overwhelming probability that the object was intended to be a content >> model object. >> >>> (c) should we stop CMA features working (eg the dissemination execution) if >>> the object identified as the content model does not itself identify through >>> RELS-EXT that it is a content model object? >> If a) were already implemented (particularly if we said that a >> hasService relationship means a hasModel->FedoraContentModel-3.0 >> relationship must also exist), I'm not sure c) would add any >> value...just code. But I haven't had my coffee yet...I might be >> missing something. >> >> - Chris >> >> ------------------------------------------------------------------------------ >> Nokia and AT&T present the 2010 Calling All Innovators-North America contest >> Create new apps & games for the Nokia N8 for consumers in U.S. and Canada >> $10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing >> Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store >> http://p.sf.net/sfu/nokia-dev2dev >> _______________________________________________ >> Fedora-commons-users mailing list >> Fedora-commons-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/fedora-commons-users > > > ------------------------------------------------------------------------------ > Nokia and AT&T present the 2010 Calling All Innovators-North America contest > Create new apps & games for the Nokia N8 for consumers in U.S. and Canada > $10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing > Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store > http://p.sf.net/sfu/nokia-dev2dev > _______________________________________________ > 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 ------------------------------------------------------------------------------ Nokia and AT&T present the 2010 Calling All Innovators-North America contest Create new apps & games for the Nokia N8 for consumers in U.S. and Canada $10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store http://p.sf.net/sfu/nokia-dev2dev _______________________________________________ Fedora-commons-users mailing list Fedora-commons-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/fedora-commons-users
