[Koha-bugs] [Bug 22820] Display 830 series information when there is no 490 tag (MARC21)

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

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=22820

--- Comment #10 from Katrin Fischer <katrin.fischer at bsz-bw.de> ---
The current logic follows this (if I am not completely mistaken), which is
based on the data I was working with and how I understand the standard:

If it's a traced series (1st indicator =1), there will be a 490 + 8xx couple of
fields. In this case we display the information from 8xx. One main reason being
that the $w subfield used to link to a traced series record is only present in
8xx.

If the series is not traced (1st ind = 0), there is no corresponding 8xx, so we
display the information in 490.

If we changed this to display always 490 independent of the indicator
(traced/untraced) a lot of information would show doubled up, once linked by
phrase search and once by record control-number (if it exists like in our
case).

The solution would be to make sure if there is a corresponding 8xx for a 490
and make the decision based on that. One record can have multiple traced and
untraced 490 entries in whatever sequence. I am really not sure how to make
this work with XSLT means. Looking at the LOC page, $a don't have to match and
there is even an example with one 490 and 2 corresponding 8xx.

-- 

http://www.loc.gov/marc/bibliographic/bd490.html
0 - Series not traced
No series added entry is desired for the series. 

1 - Series traced
When value 1 is used, the appropriate field 800-830 is included in the
bibliographic record to provide the series added entry

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