Hi!

This feature of counting the times a field occurs, is this a speciality of the 
authors field or a general feature applicable to any fiel (index) definition?

We have this question wether a field is set in several circimstances. (Though 
nothing timecritical and the "and not" range thing works as well.)

--
Kind regards,

Alexander Wagner

Subject Specialist
Central Library
52425 Juelich

mail : [email protected]
phone: +49 2461 61-1586
Fax  : +49 2461 61-6103
www.fz-juelich.de/zb/DE/zb-fi


----- Reply message -----
From: "Ludmila Marian" <[email protected]>
Date: Thu, Jul 18, 2013 15:16
Subject: How to search for the existence of a field
To: "Ferran Jorba" <[email protected]>
Cc: "[email protected]" <[email protected]>

Hello Ferran,

You will probably have to add the authorcount as an index, via BibIndex
Admin interface (if it's not already there) and then run bibindex -w
authorcount to index all records for this field. The advantage of having
authorcount index enabled is that the searches involving author
existence would be *much* faster.

For CDS, the speed for indexing authorcounts was ~8000recs/min, so
relatively fast. Also, you could run the task with priority -1 to make
sure it does not affect the incoming tasks.

Cheers,
Ludmila



On 07/18/2013 02:50 PM, Ferran Jorba wrote:
> Hello Ludmila,
>
>> Since you're running Invenio-1.1 you could use the authorcount index:
>> a search for authorcount:1+ would retrieve all records that have at
>> least one author.
>> <http://invenio-software.org/repo/invenio/commit/?id=b6152478eaf8196aa0fa71e864bfd31590626ba8>
> we are indeed on 1.1.0, and I've checked that this patch is part of our
> installation, but this search doesn't work for us:
>
>   http://ddd.uab.cat/search?p=authorcount%3A1%2B
>
> Do we have to do any magical step to activate it?
>
> Thanks,
>
> Ferran



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