[Koha-zebra] Scan problem.

[Adam Dickmeiss]

Henri-Damien LAURENT wrote:
> Mike Taylor a écrit :
>> Henri-Damien LAURENT writes:
>>  > the latest question I found a workaround :
>>  >   my $scan= $conn->scan_pqf('@attr 1=21 @attr 6=3 @attr 5=102 @attr 8=1
>>  > "[A-z0-9]"');
>>  > That way, I can get all the publishers.
>>
>> Hmm.  But if you start your scan from the just "a" that will yield the
>> same start-point.  Remember that the term in a scan "query" is not
>> searched for, just used as a start-point within the list of all
>> terms.  If you want to start from the very beginning, you should
>> probably use the empty search-term "", which sorts to the start.
>>   
>>  > This query was wrong because no search parameter. I corrected it.
>>
>> And is it working?
>>   
> empty search term is not working.
> What works best is "0".
> 
>>  > >From perldoc ZOOM :
>>  >  number [default: 10]
>>  >            Indicates how many terms should be returned in the ScanSet. 
>>  > The number actually returned may be less, if the start-point is near the
>>  > end of the index, but will not be greater.
>>  > I tried to set number to 100 this way
>>  >   $conn->option(preferredRecordSyntax => "usmarc",number=>100);
>>  > 
>>  > And got only 10 results.
>>  > Am I doing wrong ?
>>
>> For some reason, you can't set multiple options in a single call like
>> this: the second and subsequent are ignored.  Use:
>>    $conn->option(preferredRecordSyntax => "usmarc");
>>    $conn->option(number=>100);
>>   
> Thanks for this very valuable information.
> It works now.
>>  > Is there a way to order "scanned" term on hit count ?
>>
>> Not that I know of.  If there is a way, it's Zebra-specific, and Adam
>> will be the one who knows about it.
>>   
> Let us wait his advice on that then.
> 

The order of scan terms are ordered in lex. order. Not by frequency. We 
are, however, working on this . The solution will still be "scan" but an 
attribute will signal "order by frequency". AKA faceted search.

/ Adam