Either have your update client explicitly set a boolean field that indicates
whether location is present, or use an update processor to set an explicit
boolean field that means no location present:
<updateRequestProcessorChain name="location-present">
<processor class="solr.CloneFieldUpdateProcessorFactory">
<str name="source">location_field</str>
<str name="dest">has_location_b</str>
</processor>
<processor class="solr.RegexReplaceProcessorFactory">
<str name="fieldName">has_location_b</str>
<str name="pattern">[^\s]+</str>
<str name="replacement">true</str>
</processor>
<processor class="solr.DefaultValueUpdateProcessorFactory">
<str name="fieldName">has_location_b</str>
<bool name="value">false</bool>
</processor>
<processor class="solr.LogUpdateProcessorFactory" />
<processor class="solr.RunUpdateProcessorFactory" />
</updateRequestProcessorChain>
-- Jack Krupansky
-----Original Message-----
From: kevinlieb
Sent: Wednesday, June 05, 2013 5:43 PM
To: solr-user@lucene.apache.org
Subject: search for docs where location not present
I have a location-type field in my schema where I store lat / lon of a
document when this data is available. In around half of my documents this
info is not available and I just don't store anything.
I am trying to find the documents where the location is not set but nothing
is working.
I tried q=location_field:* and get back no results
I tried q=-location_field:[* TO *] but got back an error
I even tried something like:
q=*:*&fq={!geofilt sfield=location_field}&pt=34.02093,-118.210755&d=25000
(distance set to a very large number)
but it returned fields even if they had no location_field set.
Can anyone think of a way to do this?
Thanks in advance!
--
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