[OPEN-ILS-DEV] ***SPAM*** [PATCH] add stylesheet to expand MARC21 880 fields

[Galen Charlton]

Hi,

On Jun 7, 2010, at 11:16 PM, Mike Rylander wrote:
> ISTM the same could be achieved without the cost of an XSLT with
> 
> //marc:datafield[@tag='245' or (@tag='880' and
> starts-with(./marc:subfield[@code='6']/text(),
> '245'))]/marc:subfield[@code='a']
> 
> I could certainly be missing something, though.

Indeed it could, but using the XSLT allows the XPath to be more concise without having to make the user worry about 880 fields beyond remembering to set format to 'marc21expand880'.  In the particular database that inspired this patch, where for at least the first pass the indexing is based on a direct mapping of MARC subfields to index names per the legacy ILS's definitions, there are about 180 MARC tags involved spread among 12 indexes.  The time required to create such indexes during ingest wasn't noticeably longer that that required for the MODS-based indexes.

Regards,

Galen
--
Galen Charlton
VP, Data Services
Equinox Software, Inc. / Your Library's Guide to Open Source
email:  gmc at esilibrary.com
direct: +1 352-215-7548
skype:  gmcharlt
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