From: Jani Nikula Date: Tue, 14 Oct 2014 16:32:54 +0000 (+0300) Subject: [PATCH] lib: make notmuch_query_count_messages exact X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=26ef2c0507d00aefe87c867cc73da48c4c678568;p=notmuch-archives.git [PATCH] lib: make notmuch_query_count_messages exact --- diff --git a/e9/17650dd3ce12210f859e702dbcf3c4f0cbd745 b/e9/17650dd3ce12210f859e702dbcf3c4f0cbd745 new file mode 100644 index 000000000..51649db38 --- /dev/null +++ b/e9/17650dd3ce12210f859e702dbcf3c4f0cbd745 @@ -0,0 +1,130 @@ +Return-Path: +X-Original-To: notmuch@notmuchmail.org +Delivered-To: notmuch@notmuchmail.org +Received: from localhost (localhost [127.0.0.1]) + by olra.theworths.org (Postfix) with ESMTP id 2B732431FB6 + for ; Tue, 14 Oct 2014 09:33:08 -0700 (PDT) +X-Virus-Scanned: Debian amavisd-new at olra.theworths.org +X-Spam-Flag: NO +X-Spam-Score: -0.7 +X-Spam-Level: +X-Spam-Status: No, score=-0.7 tagged_above=-999 required=5 + tests=[RCVD_IN_DNSWL_LOW=-0.7] autolearn=disabled +Received: from olra.theworths.org ([127.0.0.1]) + by localhost (olra.theworths.org [127.0.0.1]) (amavisd-new, port 10024) + with ESMTP id r+QsW40HrO0c for ; 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+ Tue, 14 Oct 2014 09:32:56 -0700 (PDT) +Received: from localhost (mobile-internet-5d6ad2-138.dhcp.inet.fi. + [93.106.210.138]) + by mx.google.com with ESMTPSA id ga7sm16287360wic.5.2014.10.14.09.32.55 + for + (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); + Tue, 14 Oct 2014 09:32:56 -0700 (PDT) +From: Jani Nikula +To: Sergei Shilovsky , + notmuch@notmuchmail.org +Subject: [PATCH] lib: make notmuch_query_count_messages exact +Date: Tue, 14 Oct 2014 19:32:54 +0300 +Message-Id: <1413304374-17997-1-git-send-email-jani@nikula.org> +X-Mailer: git-send-email 2.1.1 +In-Reply-To: <1413298112-19912-2-git-send-email-sshilovsky@gmail.com> +References: <1413298112-19912-2-git-send-email-sshilovsky@gmail.com> +X-BeenThere: notmuch@notmuchmail.org +X-Mailman-Version: 2.1.13 +Precedence: list +List-Id: "Use and development of the notmuch mail system." + +List-Unsubscribe: , + +List-Archive: +List-Post: +List-Help: +List-Subscribe: , + +X-List-Received-Date: Tue, 14 Oct 2014 16:33:08 -0000 + +Our tests have expected this to be exact all along, but maybe +inaccuracies only show up with big databases. +--- + devel/TODO | 5 ----- + lib/notmuch.h | 6 +++--- + lib/query.cc | 7 ++++++- + 3 files changed, 9 insertions(+), 9 deletions(-) + +diff --git a/devel/TODO b/devel/TODO +index 1cf4089f1d93..116194d82ad1 100644 +--- a/devel/TODO ++++ b/devel/TODO +@@ -188,11 +188,6 @@ into the shared-library interface. + Audit all libnotmuch entry points to ensure that all Xapian calls are + wrapped in a try/catch block. + +-Fix the "count" functionality to be exact as Olly explained in IRC: +- +- ojwb> cworth: if you set the check_at_least parameter to the +- database size, get_matches_estimated() will be exact +- + Fix the threading of a message that has a References: header but no + In-Reply-To: header (see id:"87lixxnxpb.fsf@yoom.home.cworth.org"). + +diff --git a/lib/notmuch.h b/lib/notmuch.h +index dae041640fdb..6091082617e7 100644 +--- a/lib/notmuch.h ++++ b/lib/notmuch.h +@@ -893,10 +893,10 @@ void + notmuch_threads_destroy (notmuch_threads_t *threads); + + /** +- * Return an estimate of the number of messages matching a search. ++ * Return the number of messages matching a search. + * +- * This function performs a search and returns Xapian's best +- * guess as to number of matching messages. ++ * This function performs a search and returns the number of matching ++ * messages. + * + * If a Xapian exception occurs, this function may return 0 (after + * printing a message). +diff --git a/lib/query.cc b/lib/query.cc +index 60ff8bd9a39e..ce26e3f3e4ed 100644 +--- a/lib/query.cc ++++ b/lib/query.cc +@@ -557,7 +557,12 @@ notmuch_query_count_messages (notmuch_query_t *query) + + enquire.set_query (final_query); + +- mset = enquire.get_mset (0, notmuch->xapian_db->get_doccount ()); ++ /* ++ * Set the checkatleast parameter to the number of documents ++ * in the database to make get_matches_estimated() exact. ++ */ ++ mset = enquire.get_mset (0, notmuch->xapian_db->get_doccount (), ++ notmuch->xapian_db->get_doccount ()); + + count = mset.get_matches_estimated(); + +-- +2.1.1 +