On 7/24/07, daniel rosher <[EMAIL PROTECTED]> wrote:
Perhaps you can use a filter in the following way.
-Create a filter (via QueryFilter) that would contain all document that
do not have null values for the field
-flip the bits of the filter so that it now contains documents that have
null values for a field
-Use the filter in conjunction with subsequent queries.
That's pretty much what Solr does with it's filters. A negative
filter like -inStock:true
is generated as it's positive counterpart, and cached that way also
(generally smaller, and can satisfy both negative and positive
variants of the filter).
-Yonik
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