Hello Paul, Friday, August 26, 2005, 8:40:44 PM, you wrote:
PE> On Friday 26 August 2005 17:58, [EMAIL PROTECTED] wrote: >> >> A simple question and I guess it may have been asked before. >> >> Does the order of Querys in a BooleanQuery affect search speed? By this I >> mean if the first clause of a BooleanQuery only returns a few results and >> the second clause returns lots of results and the two are ANDed is this >> faster than the other way around? Similarly, does searching stop if no PE> Subqueries of BooleanQuery are called clauses in Lucene. PE> The order of clauses does not matter. PE> Having only required clauses does matter, normally a lot. >> results are found and the logical operations would mean no results can be >> found (similar to Javas "short circuiting" of logical operations)? PE> The development version tries to do as much "short circuiting" as possible. PE> Lucene 1.4.3 neither short circuits for "or" (optional clauses) PE> nor for "not" (prohibited clauses). PE> Both do short circuiting for "and" (required clauses). PE> Regards, PE> Paul Elschot PE> --------------------------------------------------------------------- PE> To unsubscribe, e-mail: [EMAIL PROTECTED] PE> For additional commands, e-mail: [EMAIL PROTECTED] -- Best regards, Maxim mailto:[EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
