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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle 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 3 of the License, or
// (at your option) any later version.
//
// Moodle 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 Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* @package moodlecore
* @subpackage backup-helper
* @copyright 2010 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
/**
* Implementation of iterator interface to work without information
*
* This class implementes the iterator but does nothing (as far as it
* doesn't handle real data at all). It's here to provide one common
* API when we want to skip some elements from structure, while also
* working with array/db iterators at the same time.
*
* TODO: Finish phpdocs
*/
class backup_null_iterator implements iterator {
public function rewind() {
}
public function current() {
}
public function key() {
}
public function next() {
}
public function valid() {
return false;
}
public function close() { // Added to provide compatibility with recordset iterators
}
}