Return-Path: Delivered-To: apmail-incubator-clerezza-dev-archive@minotaur.apache.org Received: (qmail 73991 invoked from network); 18 Mar 2011 13:19:53 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.3) by minotaur.apache.org with SMTP; 18 Mar 2011 13:19:53 -0000 Received: (qmail 86792 invoked by uid 500); 18 Mar 2011 13:19:53 -0000 Delivered-To: apmail-incubator-clerezza-dev-archive@incubator.apache.org Received: (qmail 86763 invoked by uid 500); 18 Mar 2011 13:19:53 -0000 Mailing-List: contact clerezza-dev-help@incubator.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: clerezza-dev@incubator.apache.org Delivered-To: mailing list clerezza-dev@incubator.apache.org Received: (qmail 86755 invoked by uid 99); 18 Mar 2011 13:19:53 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 18 Mar 2011 13:19:53 +0000 X-ASF-Spam-Status: No, hits=-0.0 required=5.0 tests=RCVD_IN_DNSWL_LOW,SPF_NEUTRAL X-Spam-Check-By: apache.org Received-SPF: neutral (athena.apache.org: local policy) Received: from [209.85.214.47] (HELO mail-bw0-f47.google.com) (209.85.214.47) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 18 Mar 2011 13:19:47 +0000 Received: by bwz10 with SMTP id 10so3123941bwz.6 for ; Fri, 18 Mar 2011 06:19:26 -0700 (PDT) MIME-Version: 1.0 Received: by 10.204.25.194 with SMTP id a2mr931343bkc.197.1300454366171; Fri, 18 Mar 2011 06:19:26 -0700 (PDT) Sender: reto@trialox.org Received: by 10.204.58.17 with HTTP; Fri, 18 Mar 2011 06:19:26 -0700 (PDT) X-Originating-IP: [217.71.247.242] In-Reply-To: References: Date: Fri, 18 Mar 2011 14:19:26 +0100 X-Google-Sender-Auth: cXjMPystU0DnCjcJn4VuAEw5Ycw Message-ID: Subject: Re: A question about Jena Sparql Engine and the TDB Store From: Reto Bachmann-Gmuer To: Olivier Grisel Cc: clerezza-dev Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On Fri, Mar 18, 2011 at 12:31 PM, Olivier Grisel wrote: > > On 18 March 2011 12:22, Reto Bachmann-Gmuer w= rote: > > I was convinced that sparql-fastlane wasa laready an issue, but it does= n't > > seem to. > > > > Thanks for adding the issues. > > Actually I found one: > > =C2=A0https://issues.apache.org/jira/browse/CLEREZZA-194 > > But for some reason it was closed as "won't fix". I linked it to > CLEREZZA-466 for reference. I undesrstood the issue CLEREZZA-194=C2=A0as a suggestion to replace the arq based implementation with another one, so basically as providing another implementation of org.apache.clerezza.rdf.core.sparql.QueryEngine. The fastlane approach (mentioned in the comments on to issue 194) is different as allows support for endpoint that are tied to the storage. I've added CLEREZZA-468 which comprises the needed changes in SCB core and marked 466 as depending on it. I'm not sure about CLEREZZA-467, it is currently possible (afaik) to run a query against multiple graphs using FROM and FROM NAMED clauses, with a resolution of CLEREZZA-468 and 466 such a query would be forwarded to the tdb.storage provider and has to be handled - not sure how the state between the resolution of 466 and 467 is supposed to look like. Reto