eprints_tech messages

From: Stephen Shorrock <sms67 AT cam.ac.uk>
Date: Fri, 07 Nov 2008 13:34:02 +0000

http://mailman.ecs.soton.ac.uk/mailman/listinfo/eprints-tech
*** EPrints community wiki - http://wiki.eprints.org/
Hi All,

I was wondering whether anyone has managed to get round some issues I've 
found with the search API.

I'd like to be able to do a couple of things:

A, Include non-word characters in my search queries (eg underscore _ 
asterix *)

B, Achieve an SQL type 'OR' in the conditions that are created for an 
exact match which includes white space eg 'project X' OR 'theme_Y' .

To try and achieve B I attempted to use two search fields eg;

$search->add_field([ $ds->get_field( "projects" ↵
)],["project 
X""],"EX","ALL" );
$search->add_field([ $ds->get_field( "projects" 
)],["theme_Y""],"EX","ALL" );

But, as I think is mentioned somewhere in the code, the second search 
condition overwrites the first.

Interestingly in the docs of Search::Field there is the note:

"It can search over several metadata fields, and the value of the value 
of the search field is usually a string containing a list of whitespace 
seperated words, or other search criteria."

I don't want a whitespace separated list of words, so what is and how 
can I utilise 'other search criteria'? are there any escape characters 
that can be used?

Thanks in advance,

Stephen