forked from GNUsocial/gnu-social
1d4f1f6bf6
Added some of the standard directories darcs-hash:20080506151729-84dde-563da8505e06a7302041c93ab157ced31165876c.gz
117 lines
3.7 KiB
PHP
117 lines
3.7 KiB
PHP
<?php
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/*
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* Laconica - a distributed open-source microblogging tool
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* Copyright (C) 2008, Controlez-Vous, Inc.
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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 Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at 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,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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if (!defined('LACONICA')) { exit(1); }
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class SearchEngine {
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protected $target;
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protected $table;
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function __construct($target, $table) {
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$this->target = $target;
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$this->table = $table;
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}
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function query($q) {
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}
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function limit($offset, $count, $rss = false) {
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return $this->target->limit($offset, $count);
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}
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function set_sort_mode($mode) {
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if ('chron' === $mode)
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return $this->target->orderBy('created desc');
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}
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}
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class SphinxSearch extends SearchEngine {
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private $sphinx;
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private $connected;
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function __construct($target, $table) {
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$fp = @fsockopen(common_config('sphinx', 'server'), common_config('sphinx', 'port'));
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if (!$fp) {
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$this->connected = false;
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return;
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}
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fclose($fp);
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parent::__construct($target, $table);
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$this->sphinx = new SphinxClient;
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$this->sphinx->setServer(common_config('sphinx', 'server'), common_config('sphinx', 'port'));
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$this->connected = true;
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}
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function is_connected() {
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return $this->connected;
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}
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function limit($offset, $count, $rss = false) {
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//FIXME without LARGEST_POSSIBLE, the most recent results aren't returned
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// this probably has a large impact on performance
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$LARGEST_POSSIBLE = 1e6;
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if ($rss) {
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$this->sphinx->setLimits($offset, $count, $count, $LARGEST_POSSIBLE);
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}
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else {
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// return at most 50 pages of results
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$this->sphinx->setLimits($offset, $count, 50 * ($count - 1), $LARGEST_POSSIBLE);
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}
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return $this->target->limit(0, $count);
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}
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function query($q) {
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$result = $this->sphinx->query($q, $this->table);
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if (!isset($result['matches'])) return false;
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$id_set = join(', ', array_keys($result['matches']));
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$this->target->whereAdd("id in ($id_set)");
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return true;
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}
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function set_sort_mode($mode) {
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if ('chron' === $mode) {
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$this->sphinx->SetSortMode(SPH_SORT_ATTR_DESC, 'created_ts');
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return $this->target->orderBy('created desc');
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}
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}
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}
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class MySQLSearch extends SearchEngine {
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function query($q) {
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if ('identica_people' === $this->table)
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return $this->target->whereAdd('MATCH(nickname, fullname, location, bio, homepage) ' .
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'against (\''.addslashes($q).'\')');
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if ('identica_notices' === $this->table)
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return $this->target->whereAdd('MATCH(content) ' .
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'against (\''.addslashes($q).'\')');
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}
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}
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class PGSearch extends SearchEngine {
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function query($q) {
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if ('identica_people' === $this->table)
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return $this->target->whereAdd('textsearch @@ plainto_tsquery(\''.addslashes($q).'\')');
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if ('identica_notices' === $this->table)
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return $this->target->whereAdd('to_tsvector(\'english\', content) @@ plainto_tsquery(\''.addslashes($q).'\')');
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}
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}
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