100 lines
3.3 KiB
PHP
100 lines
3.3 KiB
PHP
![]() |
<?php defined("SYSPATH") or die("No direct script access.");
|
||
|
/**
|
||
|
* Gallery - a web based photo album viewer and editor
|
||
|
* Copyright (C) 2000-2009 Bharat Mediratta
|
||
|
*
|
||
|
* 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.
|
||
|
*/
|
||
|
class rescue_task_Core {
|
||
|
const LEFT = 0;
|
||
|
const RIGHT = 1;
|
||
|
|
||
|
static function available_tasks() {
|
||
|
return array(Task_Definition::factory()
|
||
|
->callback("rescue_task::fix_mptt")
|
||
|
->name(t("Fix Album/Photo hierarchy"))
|
||
|
->description(t("Fix problems where your album/photo breadcrumbs are out of " .
|
||
|
"sync with your actual hierarchy."))
|
||
|
->severity(log::SUCCESS));
|
||
|
}
|
||
|
|
||
|
static function fix_mptt($task) {
|
||
|
$start = microtime(true);
|
||
|
|
||
|
$total = $task->get("total");
|
||
|
if (empty($total)) {
|
||
|
$task->set("total", $total = Database::instance()->count_records("items"));
|
||
|
$task->set("stack", array(array(1, self::LEFT)));
|
||
|
$task->set("ptr", 1);
|
||
|
$task->set("completed", 0);
|
||
|
}
|
||
|
|
||
|
$ptr = $task->get("ptr");
|
||
|
$stack = $task->get("stack");
|
||
|
$completed = $task->get("completed");
|
||
|
|
||
|
// Implement a depth-first tree walk using a stack. Not the most efficient, but it's simple.
|
||
|
while ($stack && microtime(true) - $start < 1.5) {
|
||
|
list($id, $state) = array_pop($stack);
|
||
|
switch ($state) {
|
||
|
case self::LEFT:
|
||
|
self::set_left($id, $ptr++);
|
||
|
$item = ORM::factory("item", $id);
|
||
|
array_push($stack, array($id, self::RIGHT));
|
||
|
foreach (self::children($id) as $child) {
|
||
|
array_push($stack, array($child->id, self::LEFT));
|
||
|
}
|
||
|
break;
|
||
|
|
||
|
case self::RIGHT:
|
||
|
self::set_right($id, $ptr++);
|
||
|
$completed++;
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
$task->set("stack", $stack);
|
||
|
$task->set("ptr", $ptr);
|
||
|
$task->set("completed", $completed);
|
||
|
|
||
|
if ($total == $completed) {
|
||
|
$task->done = true;
|
||
|
$task->state = "success";
|
||
|
$task->percent_complete = 100;
|
||
|
} else {
|
||
|
$task->percent_complete = round(100 * $completed / $total);
|
||
|
}
|
||
|
$task->status = t2("One row updated", "%count / %total rows updated", $completed,
|
||
|
array("total" => $total));
|
||
|
}
|
||
|
|
||
|
static function children($parent_id) {
|
||
|
return Database::instance()
|
||
|
->select("id")
|
||
|
->from("items")
|
||
|
->where("parent_id", $parent_id)
|
||
|
->orderby("left", "ASC")
|
||
|
->get();
|
||
|
}
|
||
|
|
||
|
static function set_left($id, $value) {
|
||
|
Database::instance()->update("items", array("left" => $value), array("id" => $id));
|
||
|
}
|
||
|
|
||
|
static function set_right($id, $value) {
|
||
|
Database::instance()->update("items", array("right" => $value), array("id" => $id));
|
||
|
}
|
||
|
}
|