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<?php
/**
 * This program is part of Mahara
 *
 *  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 St, Fifth Floor, Boston, MA  02110-1301 USA
 *
 * @package    mahara
 * @subpackage search
 * @author     Martyn Smith <martyn@catalyst.net.nz>
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL
 * @copyright  (C) 2006,2007 Catalyst IT Ltd http://catalyst.net.nz
 *
 */

defined('INTERNAL') || die();

/**
 * Base search class. Provides a common interface with which searches can be
 * carried out.
 */
abstract class PluginSearch {

    /**
     * Given a query string and limits, return an array of matching users
     *
     * @param string  The query string
     * @param integer How many results to return
     * @param integer What result to start at (0 == first result)
     * @return array  A data structure containing results looking like ...
     *         $results = array(
     *               count   => integer, // total number of results
     *               limit   => integer, // how many results are returned
     *               offset  => integer, // starting from which result
     *               results => array(   // the result records
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     *                   array(
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     *                       id            => integer,
     *                       username      => string,
     *                       institution   => string,
     *                       firstname     => string,
     *                       lastname      => string,
     *                       preferredname => string,
     *                       email         => string,
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     *                   ),
     *                   array(
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     *                       id            => integer,
     *                       username      => string,
     *                       institution   => string,
     *                       firstname     => string,
     *                       lastname      => string,
     *                       preferredname => string,
     *                       email         => string,
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     *                   ),
     *                   array(...),
     *               ),
     *           );
     */
    public static abstract function search_user($query_string, $limit, $offset = 0);
}

?>