Am 07.02.2011 15:11, schrieb Jerome Caffaro:
Dear Jerome,
For a given format I'd like to print out a field where a
specific condition is met. [...] Print ISSN:<BFE_FIELD
tag="022__$a" condition="$c=print" /> eISSN:<BFE_FIELD
tag="022__$a" condition="$c=online" />
Indeed we do not have such a condition parameter available
for the <BFE_FIELD /> tag. You will have to create your
own element (in Python) to produce the desired behaviour.
This is what I actually resorted to right now. It could just
have been that I missed some minimal invasive way to do it.
Alternatively you might want to enrich the bfe_field.py
element with such a "condition" parameter. Note that:
1) in principle you should not modify the default provided elements,
as they would get overwritten when you update Invenio. You should
consequently rename bfe_field.py to bfe_field_juelich.py, modify
it, and call it with<BFE_FIELD-JUELICH /> in your templates.
That's how it works right now.
2) better, if your addition of parameter "condition" is generic enough
your modifications could be integrated back into the the Invenio
software so that everyone can benefit from it. This might mean that
for eg. the condition can also be applied to other fields than the
current one:
<BFE_FIELD tag="022__$a" condition="260__c=print" />
I'll see if I can come up with something the like.
My current usage however is to fiddle out a specific ID
number from a bunch of numbers all given in the same Marc
field (ie. repeatable fields). So, condition is here
something like "if $2 is XYZ then use $a" but both from the
same field. Eg. I need the value of "ZDBID" from something
like this:
024 7_ $2ZDBID $a1461167-3
024 7_ $2ZDBPPN $a019545339
024 7_ $2EZBID $a52540
024 7_ $2OCLC $a645318259
024 7_ $2ERA $a1078
024 7_ $2ISI $aPHYSICAL REVIEW D
024 7_ $2SCOPUS $a110157
024 7_ $2JCR $aPHYS REV D
024 7_ $2SCOPUS $a29459
024 7_ $2Medline $a0242621
We usually create our own bfe_s, so I do not have real use case
scenarios in mind to detail how "condition" parameter should be
done to please most people. The community might want to contribute...
For the time being I've a very simple function, but I will
to enhance this a bit further, so suggestions are welcome. :)
--
Kind regards,
Alexander Wagner
Subject Specialist
Central Library
52425 Juelich
mail : [email protected]
phone: +49 2461 61-1586
Fax : +49 2461 61-6103
http://www.fz-juelich.de/zb/mitarbeiter/fachinformation#wagner
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Vorsitzender des Aufsichtsrats: MinDirig Dr. Karl Eugen Huthmacher
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Prof. Dr. Sebastian M. Schmidt
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