107 lines
3.7 KiB
PHP
107 lines
3.7 KiB
PHP
<?php defined("SYSPATH") or die("No direct script access.");
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/**
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* Gallery - a web based photo album viewer and editor
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* Copyright (C) 2000-2011 Bharat Mediratta
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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class search_Core {
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/**
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* Add more terms to the query by wildcarding the stem value of the first
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* few terms in the query.
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*/
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static function add_query_terms($q) {
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$MAX_TERMS = 5;
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$terms = explode(" ", $q, $MAX_TERMS);
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for ($i = 0; $i < min(count($terms), $MAX_TERMS - 1); $i++) {
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// Don't wildcard quoted or already wildcarded terms
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if ((substr($terms[$i], 0, 1) != '"') && (substr($terms[$i], -1, 1) != "*")) {
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$terms[] = rtrim($terms[$i], "s") . "*";
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}
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}
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return implode(" ", $terms);
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}
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static function search($q, $limit, $offset) {
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$db = Database::instance();
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$q = $db->escape($q);
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if (!identity::active_user()->admin) {
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foreach (identity::group_ids_for_active_user() as $id) {
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$fields[] = "`view_$id` = TRUE"; // access::ALLOW
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}
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$access_sql = "AND (" . join(" OR ", $fields) . ")";
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} else {
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$access_sql = "";
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}
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$query =
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"SELECT SQL_CALC_FOUND_ROWS {items}.*, " .
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" MATCH({search_records}.`data`) AGAINST ('$q') AS `score` " .
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"FROM {items} JOIN {search_records} ON ({items}.`id` = {search_records}.`item_id`) " .
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"WHERE MATCH({search_records}.`data`) AGAINST ('$q' IN BOOLEAN MODE) " .
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$access_sql .
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"ORDER BY `score` DESC " .
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"LIMIT $limit OFFSET $offset";
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$data = $db->query($query);
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$count = $db->query("SELECT FOUND_ROWS() as c")->current()->c;
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return array($count, new ORM_Iterator(ORM::factory("item"), $data));
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}
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/**
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* @return string An error message suitable for inclusion in the task log
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*/
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static function check_index() {
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list ($remaining) = search::stats();
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if ($remaining) {
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site_status::warning(
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t('Your search index needs to be updated. <a href="%url" class="g-dialog-link">Fix this now</a>',
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array("url" => html::mark_clean(url::site("admin/maintenance/start/search_task::update_index?csrf=__CSRF__")))),
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"search_index_out_of_date");
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}
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}
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static function update($item) {
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$data = new ArrayObject();
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$record = ORM::factory("search_record")->where("item_id", "=", $item->id)->find();
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if (!$record->loaded()) {
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$record->item_id = $item->id;
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}
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$item = $record->item();
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module::event("item_index_data", $item, $data);
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$record->data = join(" ", (array)$data);
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$record->dirty = 0;
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$record->save();
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}
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static function stats() {
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$remaining = db::build()
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->from("items")
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->join("search_records", "items.id", "search_records.item_id", "left")
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->and_open()
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->where("search_records.item_id", "IS", null)
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->or_where("search_records.dirty", "=", 1)
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->close()
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->count_records();
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$total = ORM::factory("item")->count_all();
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$percent = round(100 * ($total - $remaining) / $total);
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return array($remaining, $total, $percent);
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}
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}
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