<?php
/**
 * Implements Special:Uncategorizedpages
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 * http://www.gnu.org/copyleft/gpl.html
 *
 * @file
 * @ingroup SpecialPage
 */

/**
 * A special page looking for page without any category.
 *
 * @ingroup SpecialPage
 */
class UncategorizedPagesPage extends PageQueryPage {
	var $requestedNamespace = NS_MAIN;

	function getName() {
		return "Uncategorizedpages";
	}

	function sortDescending() {
		return false;
	}

	function isExpensive() {
		return true;
	}
	function isSyndicated() { return false; }

	function getSQL() {
		$dbr = wfGetDB( DB_SLAVE );
		list( $page, $categorylinks ) = $dbr->tableNamesN( 'page', 'categorylinks' );
		$name = $dbr->addQuotes( $this->getName() );

		return
			"
			SELECT
				$name as type,
				page_namespace AS namespace,
				page_title AS title,
				page_title AS value
			FROM $page
			LEFT JOIN $categorylinks ON page_id=cl_from
			WHERE cl_from IS NULL AND page_namespace={$this->requestedNamespace} AND page_is_redirect=0
			";
	}
}

/**
 * constructor
 */
function wfSpecialUncategorizedpages() {
	list( $limit, $offset ) = wfCheckLimits();

	$lpp = new UncategorizedPagesPage();

	return $lpp->doQuery( $offset, $limit );
}