[Koha-bugs] [Bug 6590] Removing hyphens from isbn and issn when cataloging a biblio

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

http://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=6590

Magnus Enger <magnus at enger.priv.no> changed:

           What    |Removed                     |Added
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             Status|Failed QA                   |In Discussion

--- Comment #20 from Magnus Enger <magnus at enger.priv.no> ---
(In reply to comment #12)
> Alternate implementation idea:  use Zebra indexing configs to index both the
> plaintext ISBN (as it's written in the MARC record) and the normalized ISBN.
> This way, we don't have to change any of the actual data in the records or
> how search works; we just add more access points to the data.  Less chance
> of regression this way.
> 
> I think if we added isbn.chr file to etc/zebradb/etc, updated default.idx to
> include it, and modified record.abs to add ISBN and ISSN to those index
> types, we could pull this off.

This sounds promising, but we need to be careful how we do the normalization.
We could extract {0-9xX} from 020$a, but then this would result in an incorrect
ISBN being indexed:

020     $a0914378260 (pbk. : v. 1) :$c$5.00

(This example is taken from
http://lists.indexdata.dk/pipermail/zebralist/2009-March/002136.html)

So we need to do something like extract the first "word" from 020$a, and then
extract {0-9xX} from it. Can we do that with a .chr file? 

Maybe it is easier with DOM indexing, as hinted at here?
http://lists.indexdata.dk/pipermail/zebralist/2009-March/002137.html

Or could we do some trickery before the indexing? Like add a Koha-specific,
hidden subfield to 020 where we store a normalized ISBN when a record is
saved/updated? Business::ISBN would be good for doing that, I think.

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