Return-Path: Delivered-To: apmail-db-derby-user-archive@www.apache.org Received: (qmail 90660 invoked from network); 4 Oct 2007 04:38:16 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.2) by minotaur.apache.org with SMTP; 4 Oct 2007 04:38:16 -0000 Received: (qmail 44794 invoked by uid 500); 4 Oct 2007 04:38:04 -0000 Delivered-To: apmail-db-derby-user-archive@db.apache.org Received: (qmail 44764 invoked by uid 500); 4 Oct 2007 04:38:04 -0000 Mailing-List: contact derby-user-help@db.apache.org; run by ezmlm Precedence: bulk list-help: list-unsubscribe: List-Post: List-Id: Reply-To: "Derby Discussion" Delivered-To: mailing list derby-user@db.apache.org Received: (qmail 44745 invoked by uid 99); 4 Oct 2007 04:38:04 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 03 Oct 2007 21:38:04 -0700 X-ASF-Spam-Status: No, hits=-1.0 required=10.0 tests=RCVD_IN_DNSWL_LOW,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: local policy) Received: from [192.18.43.133] (HELO sca-es-mail-2.sun.com) (192.18.43.133) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 04 Oct 2007 04:38:04 +0000 Received: from fe-sfbay-10.sun.com ([192.18.43.129]) by sca-es-mail-2.sun.com (8.13.7+Sun/8.12.9) with ESMTP id l944bhpR029425 for ; Wed, 3 Oct 2007 21:37:43 -0700 (PDT) Received: from conversion-daemon.fe-sfbay-10.sun.com by fe-sfbay-10.sun.com (Sun Java System Messaging Server 6.2-8.04 (built Feb 28 2007)) id <0JPD00D01E6O3X00@fe-sfbay-10.sun.com> (original mail from Craig.Russell@Sun.COM) for derby-user@db.apache.org; Wed, 03 Oct 2007 21:37:43 -0700 (PDT) Received: from [192.168.0.12] (c-24-6-172-77.hsd1.ca.comcast.net [24.6.172.77]) by fe-sfbay-10.sun.com (Sun Java System Messaging Server 6.2-8.04 (built Feb 28 2007)) with ESMTPSA id <0JPD003FNE6VTG40@fe-sfbay-10.sun.com> for derby-user@db.apache.org; Wed, 03 Oct 2007 21:37:43 -0700 (PDT) Date: Wed, 03 Oct 2007 21:37:27 -0700 From: Craig L Russell Subject: Re: checking if table exists In-reply-to: <47039CA6.7070406@amberpoint.com> Sender: Craig.Russell@Sun.COM To: Derby Discussion Message-id: <54A62B0D-B154-49A4-95EA-02F8C34C4DBF@SUN.com> MIME-version: 1.0 X-Mailer: Apple Mail (2.752.3) Content-type: multipart/signed; protocol="application/pkcs7-signature"; boundary=Apple-Mail-167-564566633; micalg=sha1 References: <95F9136B-1A7A-414B-8F93-2C37EA4F982E@uni-dortmund.de> <009f01c805b8$ad5417f0$6401a8c0@emea.itt.net> <5C990742-C12A-4637-AC72-E2BD5FB6BBC5@uni-dortmund.de> <47039CA6.7070406@amberpoint.com> X-Virus-Checked: Checked by ClamAV on apache.org --Apple-Mail-167-564566633 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed On Oct 3, 2007, at 6:44 AM, Bryan Pendleton wrote: >> while((result.next()) & (tableExists = false)) { > > Is this possibly a typo? Make sure it says: > > while((result.next()) && (tableExists == false)) { > > You want to do a logical and, not a bitwise and; The difference between boolean1 & boolean2 is not bitwise versus logical; it's between unconditional & versus conditional && operation. In this case, either & or && works fine since there are no side effects of the assignment of false to tableExists. > also you want to do a comparison, not an assignment. This I agree with. Regards, Craig > > thanks, > > bryan > > Craig Russell Architect, Sun Java Enterprise System http://java.sun.com/products/jdo 408 276-5638 mailto:Craig.Russell@sun.com P.S. A good JDO? 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