: If the query stars with a negative clause Lucene returns nothing.
that's not true. If a "Query" in lucene is a BooleanQuery that only
contains negative clauses, then Lucene returns nothing (because nothing is
positively selected) ... but it if there is a mix of negative lcauses and
positive clauses doesn't matter what order the clauses are in.
in *solr* there is code that attempts to detect a query containing purely
negative clauses and it adds a "MatchAllDocs" query in that case -- but it
only works at the top level of a query. nested queries like this...
+fieldA:foo +(-fieldB:bar -fieldC:baz)
...won't work as you expect, because that nested query is only negative
clauses. you can add your own MatchAllDocs query explicitly using the *:*
syntax....
+fieldA:foo +(*:* -fieldB:bar -fieldC:baz)
: endDate[NOW TO *] OR -endDate:[* TO *]
side note: you really, REALLY don't wnat to mix the "+/-" syntax with
"ANT/OR/NOT" .. it almost never works out the way you expect...
: >can I search for a date, which is either in the future OR missing
: >completely (meaning open ended)
: >
: >I've tried -endDate:[* TO *] OR endDate[NOW TO *] but that doesn't work.
unless you've set the default op to "AND" this should work...
fq = endDate:[NOW TO *] (*:* -endDate:[* TO *])
-Hoss
