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<?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 search_Core {
static function search($q, $limit, $offset) {
$db = Database::instance();
$q = $db->escape_str($q);
if (!user::active()->admin) {
foreach (user::group_ids() as $id) {
$fields[] = "`view_$id` = TRUE"; // access::ALLOW
}
$access_sql = "AND (" . join(" AND ", $fields) . ")";
} else {
$access_sql = "";
}
// Count the total number of rows. We can't do this with our regular query because of the
// limit statement. It's possible that if we get rid of the limit (but keep the offset) on
// the 2nd query and combine the two, it might be faster than making 2 separate queries.
$count_query = "SELECT COUNT(*) AS c " .
"FROM {items} JOIN {search_records} ON ({items}.`id` = {search_records}.`item_id`) " .
"WHERE MATCH({search_records}.`data`) AGAINST ('$q' IN BOOLEAN MODE) " .
$access_sql;
$count = $db->query($count_query)->current()->c;
$query = "SELECT {items}.*, MATCH({search_records}.`data`) AGAINST ('$q') AS `score` " .
"FROM {items} JOIN {search_records} ON ({items}.`id` = {search_records}.`item_id`) " .
"WHERE MATCH({search_records}.`data`) AGAINST ('$q' IN BOOLEAN MODE) " .
$access_sql .
"ORDER BY `score` DESC " .
"LIMIT $limit OFFSET $offset";
return array($count, new ORM_Iterator(ORM::factory("item"), $db->query($query)));
}
/**
* @return string An error message suitable for inclusion in the task log
*/
static function check_index() {
list ($remaining) = search::stats();
if ($remaining) {
site_status::warning(
t('Your search index needs to be updated. <a href="%url" class="gDialogLink">Fix this now</a>',
array("url" => SafeString::of_safe_html(url::site("admin/maintenance/start/search_task::update_index?csrf=__CSRF__")))),
"search_index_out_of_date");
}
}
static function update($item) {
$data = new ArrayObject();
$record = ORM::factory("search_record")->where("item_id", $item->id)->find();
if (!$record->loaded) {
$record->item_id = $item->id;
}
module::event("item_index_data", $record->item(), $data);
$record->data = join(" ", (array)$data);
$record->dirty = 0;
$record->save();
}
static function stats() {
$remaining = Database::instance()
->select("items.id")
->from("items")
->join("search_records", "items.id", "search_records.item_id", "left")
->open_paren()
->where("search_records.item_id", null)
->orwhere("search_records.dirty", 1)
->close_paren()
->get()
->count();
$total = ORM::factory("item")->count_all();
$percent = round(100 * ($total - $remaining) / $total);
return array($remaining, $total, $percent);
}
}
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