[EP-tech] Searching with multiple compound fields

[Ian Stuart]

In EPrints, one can set up compound fields ("creator" is the classic 
example: it has "given name", "Family name", "honorific", and "id" 
sub-fields in one EPrint-field.

I've created a similar field, which I'm now using in a search.

Look at http://devel.edina.ac.uk:1203/45477/

I have an EPrint field called "Target repositories", this is a multipul 
field, in that I can have more than one "row"
It's also a compound field, in that each item consists of 11 sub-fields.

All is good, and I can happily read & write data to this setup.... not a 
problem.

Searching, however, has become an issue - and I wasn't aware of the 
issue until recently!

I create a search thus:

   my $ds = $session->get_repository->get_dataset("archive");
   my $search = EPrints::Search->new(
     satisfy_all => 1,
     session     => $session,
     dataset     => $ds,
   );
   my $date_range = '2000-01-01-3000-12-31';
   $search->add_field( $dso->get_field("broker_sent"), $date_range );
   $search->add_field( $dso->get_field("broker_live"), '', 'EX' );
   print $search->render_description->toString if ( $noise > 0 );

This prints a search string that says

   Date sent is between 01 January 2000 and 31 December 3000 inclusive
   <b xmlns="http://www.w3.org/1999/xhtml">AND</b> Date went live is
   UNSPECIFIED.

Unfortunately it's picking up eprintid 45477 - when obviously (to a 
human) it shouldn't.

So - how do I restrict a search so that the terms have to be within a 
single "row" of a multiple compound field?

-- 

Ian Stuart.
Developer: ORI, RJ-Broker, and OpenDepot.org
Bibliographics and Multimedia Service Delivery team,
EDINA,
The University of Edinburgh.

http://edina.ac.uk/

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