: My first impression is that it is exactly like specifying the terms ... : however, the boolean expression in me it telling me that's NOT( RADISH OR : SHOE) ... which, from the programming example I sited before means a
http://wiki.apache.org/lucene-java/BooleanQuerySyntax When dealing with Lucene people are strongly encouraged to think in terms of MUST, MUST_NOT and SHOULD (which are represented in the query parser as the prefixes "+", "-" and the default) instead of in terms of AND, OR, and NOT ... Lucene's Boolean Queries (and thus Lucene's QueryParser) is not a strict Boolean Logic system, so it's best not to try and think of it like one. : Put another way, if +(A B) means I must have at least an A or B (or both), : but +A +B means I have to have both.... : : Then why doesn't -(X Y) mean I must not have an X or Y (or not both), where : -X -Y means I can't have either. -$FOO means that documents MUST_NOT match the query expressed by $FOO, if $FOO is (X Y) then documents must not match either X or Y. +$FOO means that documents MUST match the query expressed by $FOO, if $FOO is (A B) then documents must match either A or B. -Hoss --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
