eprints_tech messages

From: Stephen Shorrock <sms67 AT cam.ac.uk>
Date: Wed, 05 Nov 2008 16:27:51 +0000

http://mailman.ecs.soton.ac.uk/mailman/listinfo/eprints-tech
*** EPrints community wiki - http://wiki.eprints.org/
admin AT company.org.ua wrote:
> http://mailman.ecs.soton.ac.uk/mailman/listinfo/eprints-tech
> *** EPrints community wiki - http://wiki.eprints.org/
> Hello
> I have problem (with example from api_core.pdf ) Not Work
>
>    my $session = new EPrints::Session;
>    exit( 0 ) unless( defined $session );
>    my $ds = $session->get_repository->get_dataset( ↵
"archive" );
>    # Create search expression
>     my $search = new EPrints::Search(                                      ↵
                                                         
>         session => $session,                                            ↵
                                                            
>         dataset => $ds,                                                 ↵
                                                            
>         custom_order => 'title' );                                      ↵
                                                            
> $search->add_field(
>     [
>        $ds->get_field("type"),
>        $ds->get_field("title")
>    ],
>      "book_section",
>       "IN",
>      "ALL" );
> my $list = $search->perform_search;
> # Modify result for return
> my  AT result=();                                                          ↵
                                                            
> # Map function to each result                                              ↵
                                                         
> $list->map(                                                             ↵
                                                            
>                 sub {                                                      ↵
                                                         
>                 my( $session, $dataset, $eprint ) =  AT _;                 ↵
                                                            
>                 push  AT result, $eprint->get_id;                       ↵
                                                               
>                 }                                                          ↵
                                                         
>         );
>
> If delete  "$ds->get_field("title")"  this exemple ↵
is work
> How to search in  full text search which matches
> word in title or abstract   ?
>
>
>   
Hello admin,

The way I read the perldocs is that if you were searching for book 
sections with the string 'example' in the title or abstract you would 
add the following search fields:

$search->add_field(
    $ds->get_field("type"),
    "book_section",
      "EQ",
     "ALL" );

(finds all book_sections) and

$search->add_field(
    ↵
[$ds->get_field("abstract"),$ds->get_field("title")],
     "example",
     "IN",
     "ANY" );



Regards,
Stephen

perldoc:

3. The "match" parameter which can be one of:
match=IN
           Treat the value as a list of whitespace-separated words. 
Search for each one in the full-text index.
           In the case of subjects, match these subject ids or the those 
of any of their decendants in the subject tree.

match=EQ (equal)
           Treat the value as a single string. Match only fields which 
have this value.

match=EX (exact)
           If the value is an empty string then search for fields which 
are empty, as oppose to skipping this search field.
           In the case of subjects, match the specified subjects, but 
not their decendants.

match=NO
           This is only really used internally, it means the search 
field will just fail to match anything without doing any actual search\u2010
           ing.

4. the "merge" parameter which can be one of:
merge=ANY
           Match an item if any of the words in the value match.
merge=ALL
           Match an item only if all of the words in the value match.