On Thu, May 24, 2018 at 3:34 PM, Katrin Fischer <katrin.fischer...@web.de> wrote:
> Hi Barton, > > Control-number is the index on 001. 001 should have the number and 003 the > MarcOrgCode, that's why it's stripped from $w for search. I don't know > about OCLCs practices, so can't tell how numbers are handled there. The > examples here show a number with ocm in 001: > > http://www.loc.gov/marc/bibliographic/bd001.html > >From that link: Contains the control number assigned by the organization creating, using, > or distributing the record. For interchange purposes, documentation of the > structure of the control number and input conventions should be provided to > exchange partners by the organization initiating the interchange. That potentially means that we would have to write XSLT to transform the links in $w for each 'exchange partner' -- i.e. test the Marc Org Code, then apply a bunch of rules to generate a value that we can search for. The examples don't leave me brimming with confidence that most exchange partners will use the same format for $w (after the Org Code) as for the 001: *001* #880524405## 003 CaOONL *001* ###86104385# 003 DLC *001* ocm14919759 003 OCoLC *001* #####9007496 003 DNLM The description for $w (http://www.loc.gov/marc/bibliographic/bd76x78x.html) > doesn't have a matching example: > > "System control number of the related record preceded by the MARC code, > enclosed in parentheses, for the agency to which the control number > applies." > > Hope this helps, > > Katrin > Well, at the very least, it lets me know what I'm getting myself into. I wonder if there's a way of translating the values found in $w into 001 outside of XSLT -- that's a language not well suited to the task. Could we do it in perl, and stash the results in some 9XX field? I was kind of hoping that we would be able to use whatever we got back from extractControlNumber as a base for any transformations. That may or may not be a safe assumption. > >
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