Could you replace it with something that will sort it last instead of an empty
string? (Say, for example, replacement="{}"). This would still give something
that looks empty to a person, and would sort last.
BTW, it looks to me as though your pattern only requires that the input contain
just ONE non-roman character. For it to consist of ALL (and including at least
one) non-roman characters, I think your pattern should be "(^[^a-z]+$)".
JRJ
-----Original Message-----
From: themanwho [mailto:theman...@mac.com]
Sent: Monday, October 24, 2011 3:29 PM
To: solr-user@lucene.apache.org
Subject: sort non-roman character strings last
As the subject line says, when sorting documents on a field that may contain
only non-roman characters, I would like sort those documents last. My initial
approach was a pattern replacement filter:
First of all, lowercase everything...
then...
<filter class="solr.PatternReplaceFilterFactory" pattern="([^a-z])"
replacement="" replace="all">
(along with sortMissingLast=true)
The analysis servlet demonstrates the fieldtype is doing what it needs to do --
that is, if the field is strictly non-roman, I wind up with a null string.
However, when I sort ascending, these pesky documents still sort at the top of
the list.
What am I doing wrong or misunderstanding here? Guess -- does a null string
not qualify as a missing field?
Any suggestions?
Thanks a million for any clues.
Bill
Human wheels spin round and round
While the clock keeps the pace... -- John Mellencamp
________________________________________________________________
Bill Tantzen University of Minnesota Libraries
612-626-9949 (U of M) 612-325-1777 (cell)
--
View this message in context:
http://lucene.472066.n3.nabble.com/sort-non-roman-character-strings-last-tp3449415p3449415.html
Sent from the Solr - User mailing list archive at Nabble.com.
