From lucene-user-return-2468-qmlist-jakarta-archive-lucene-user=jakarta.apache.org@jakarta.apache.org Thu Sep 12 23:13:12 2002 Return-Path: Delivered-To: apmail-jakarta-lucene-user-archive@apache.org Received: (qmail 14052 invoked from network); 12 Sep 2002 23:13:12 -0000 Received: from unknown (HELO nagoya.betaversion.org) (192.18.49.131) by daedalus.apache.org with SMTP; 12 Sep 2002 23:13:12 -0000 Received: (qmail 5491 invoked by uid 97); 12 Sep 2002 23:13:44 -0000 Delivered-To: qmlist-jakarta-archive-lucene-user@jakarta.apache.org Received: (qmail 5310 invoked by uid 97); 12 Sep 2002 23:13:43 -0000 Mailing-List: contact lucene-user-help@jakarta.apache.org; run by ezmlm Precedence: bulk List-Unsubscribe: List-Subscribe: List-Help: List-Post: List-Id: "Lucene Users List" Reply-To: "Lucene Users List" Delivered-To: mailing list lucene-user@jakarta.apache.org Received: (qmail 5224 invoked by uid 98); 12 Sep 2002 23:13:41 -0000 X-Antivirus: nagoya (v4218 created Aug 14 2002) Message-ID: <3D81200D.8070103@lucene.com> Date: Thu, 12 Sep 2002 16:15:25 -0700 From: Doug Cutting User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.1) Gecko/20020826 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Lucene Users List Subject: Re: GoogleQueryParser References: <50EA669584662B498F13A5F24630A0C00164CEA6@peach.mnet.private> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Rating: daedalus.apache.org 1.6.2 0/1000/N X-Spam-Rating: daedalus.apache.org 1.6.2 0/1000/N Halácsy Péter wrote: > To be exact it's not a bug, it's feature ;) Well, the structured query language of Lucene (and Google and others) is not a strict boolean language. For example I think the QueryParser of Lucene do not support parenthesis: a AND (b OR C) Lucene's query parser does support parentheses. As with programming language, if you really care about operator precedence, parenthesize heavily. A fully parenthesized boolean query should always be interpreted correctly by Lucene's query parser. Doug -- To unsubscribe, e-mail: For additional commands, e-mail: