Return-Path: X-Original-To: apmail-lucene-java-user-archive@www.apache.org Delivered-To: apmail-lucene-java-user-archive@www.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id C27DA7C6E for ; Mon, 19 Dec 2011 13:39:40 +0000 (UTC) Received: (qmail 82707 invoked by uid 500); 19 Dec 2011 13:39:38 -0000 Delivered-To: apmail-lucene-java-user-archive@lucene.apache.org Received: (qmail 82653 invoked by uid 500); 19 Dec 2011 13:39:38 -0000 Mailing-List: contact java-user-help@lucene.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: java-user@lucene.apache.org Delivered-To: mailing list java-user@lucene.apache.org Received: (qmail 82637 invoked by uid 99); 19 Dec 2011 13:39:38 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 19 Dec 2011 13:39:38 +0000 X-ASF-Spam-Status: No, hits=-0.0 required=5.0 tests=SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of uwe@thetaphi.de designates 188.138.97.18 as permitted sender) Received: from [188.138.97.18] (HELO mail.sd-datasolutions.de) (188.138.97.18) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 19 Dec 2011 13:39:32 +0000 Received: from VEGA (port-92-196-125-184.dynamic.qsc.de [92.196.125.184]) by mail.sd-datasolutions.de (Postfix) with ESMTPSA id E51A014AA356 for ; Mon, 19 Dec 2011 13:39:11 +0000 (UTC) From: "Uwe Schindler" To: References: <4EEF0C65.6020709@fastmail.fm> In-Reply-To: Subject: RE: Query that returns all docs that contain a field Date: Mon, 19 Dec 2011 14:39:56 +0100 Message-ID: <005c01ccbe53$b266b420$17341c60$@thetaphi.de> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Outlook 14.0 Thread-Index: AQIV9t65+vUVoFiNMZUTh/Nxeel4dwINHFamAgoqo2GVL/8IIA== Content-Language: de X-Virus-Checked: Checked by ClamAV on apache.org Hi, There is also a Query/Filter based on that FieldCache: o.a.l.search.FieldValueFilter, possibly wrapped with ConstantScoreQuery Uwe ----- Uwe Schindler H.-H.-Meier-Allee 63, D-28213 Bremen http://www.thetaphi.de eMail: uwe@thetaphi.de > -----Original Message----- > From: Michael McCandless [mailto:lucene@mikemccandless.com] > Sent: Monday, December 19, 2011 2:36 PM > To: java-user@lucene.apache.org > Cc: paul_t100@fastmail.fm > Subject: Re: Query that returns all docs that contain a field > > You could also use FieldCache.getDocsWithField; it returns a bit set where the > bit is set if that document had that field. > > Mike McCandless > > http://blog.mikemccandless.com > > On Mon, Dec 19, 2011 at 7:32 AM, Trejkaz wrote: > > On Mon, Dec 19, 2011 at 9:05 PM, Paul Taylor > wrote: > >> I was looking for a Query that returns all documents that contain a > >> particular field, it doesnt matter what the value of the field is > >> just that the document contains the field. > > > > If you don't care about performance (or if it runs fast enough > > already), use a PrefixQuery with "" as the prefix. > > > > If you care about performance, add a new field which contains the > > names of each field in the document, and query on that. > > > > TX > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org > > For additional commands, e-mail: java-user-help@lucene.apache.org > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org > For additional commands, e-mail: java-user-help@lucene.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org For additional commands, e-mail: java-user-help@lucene.apache.org