: I have a single type field that can contain zero or more values (comma
: separated values). This field stores some sort of access value.
:
: In the filter, I am given a list of allowed values for the field and a
: document must be considered if all values contained in its field must be
: present in the allowed values specified in the filter.
: How can i write filter query for this?
My prefered solution is:
1) index the *unique* values as a multivalued StrField
(ex: foo)
2) create a second field containing the *count* of unique values,
CountFieldValuesUpdateProcessorFactory makes this trivial
(ex: foo_count)
3) query/filter using the frange parser with l & h both =0, and the
function being foo_count minus the sum of the termfreq results for each
value the user posesses.
Examples query...
: 1. Case #1) If the allowed values specified in the filter are (a1, a3,
: a4, a6) --> the document should not be considered since user doesn’t have
fq={!frange l=0 h=0}sub(foo_count,
sum(termfreq(foo,'a1),
termfreq(foo,'a3'),
termfreq(foo,'a4'),
termfreq(foo,'a6')))
-Hoss
http://www.lucidworks.com/
