[Koha-devel] How we can input a very large field

[Paul POULAIN]

Andrés Tarallo a écrit :
> Albert:
> 
> The solution you are proposig seem to be very clean. For doing that some 
> fieldos should be blobs. However in the current DB Schema is not clear 
> to me that this can be done. On the other hand searches in blobs could 
> be very slow.
> Andres

The DB scheme & Koha perl code supports fields > 255 char. The problem 
was only in HTML that had a limit to 255. In marc_words, there is a 
bloblink field. It's field only if the entry is >255 char. In this case, 
the bloblink contains the number of the blob in marc_blob file.
With this, you have fields <255 easily accessible & other still managed.
Note that with marc_word structure all words are indexed, so 
SearchMarc.pm can deal with any size with indexed performances.

Hope it's clear.


-- 
Paul POULAIN
Consultant indépendant en logiciels libres
responsable francophone de koha (SIGB libre http://www.koha-fr.org)