[Koha-bugs] [Bug 10306] Publication information can only be mapped to either 260 or 264 (RDA)

[bugzilla-daemon at bugs.koha-community.org]

http://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=10306

Galen Charlton <gmcharlt at gmail.com> changed:

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                 CC|                            |gmcharlt at gmail.com

--- Comment #5 from Galen Charlton <gmcharlt at gmail.com> ---
To outline a way of dealing with this:

One way of looking at the problem is that RDA and the 260/264 forces us to deal
with the fact that some attributes that we might want to stick in a column in
biblio or biblioitems needs to draw from multiple MARC fields.

XSLT and XPath give ways to do that sort of parsing... so we can add it to Koha
something like this:

- Create a new table to store XSLT stylesheets.  This could be a combination of
standard stylesheets (e.g., the MARC21 to MODS transforming) and local ones.
- Create a new table to specify mappings to columns, something like this:

  koha_attribute_map
     kohafield    # name of table and column to store the results
     xslt         # reference to the XSLT to use, if need be
     xpath        # what to use to extract the value

The process would then be, when saving a bib record, that for each attribute
specified in koha_attribute_map, the XSLT (if specified) would be applied to
the MARCXML, then the XPath used to extract a result, which is then placed in
the column specified by kohafield.

This process could be used to supplemnt the one-subfield-to-one-column mapping
that the MARC frameworks already specify, or with a bit more work, replace it.

I should note that this general idea is inspired largely by similar mechanisms
in Evergreen.

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