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<?php
/**
 * Class to walk into a list of Title objects.
 *
 * Note: this entire file is a byte-for-byte copy of UserArray.php with
 * s/User/Title/.  If anyone can figure out how to do this nicely with
 * inheritance or something, please do so.
 *
 * 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
 */

/**
 * The TitleArray class only exists to provide the newFromResult method at pre-
 * sent.
 */
abstract class TitleArray implements Iterator {
	/**
	 * @param ResultWrapper $res A SQL result including at least page_namespace and
	 *   page_title -- also can have page_id, page_len, page_is_redirect,
	 *   page_latest (if those will be used).  See Title::newFromRow.
	 * @return TitleArrayFromResult
	 */
	static function newFromResult( $res ) {
		$array = null;
		if ( !Hooks::run( 'TitleArrayFromResult', array( &$array, $res ) ) ) {
			return null;
		}
		if ( $array === null ) {
			$array = self::newFromResult_internal( $res );
		}
		return $array;
	}

	/**
	 * @param ResultWrapper $res
	 * @return TitleArrayFromResult
	 */
	protected static function newFromResult_internal( $res ) {
		$array = new TitleArrayFromResult( $res );
		return $array;
	}
}