Ok, I'm confused again, not unusual.... To create a bitset for the following condition
Zip IS NOT NULL why invert the bitset? a token containing the empty string matches documents that
contain that token
Isn't this exactly what he wants? Or am I mis-reading this? I'm reading it as "any document that contains a ZIP will match a token containing the empty string"..... Or am I getting tokens and terms all mixed up? what you want to do is create a bitset for every document that has a value
in that field, and then invert the BitSet.