mirror of
https://github.com/moodle/moodle.git
synced 2025-08-04 08:26:37 +02:00
103 lines
2.7 KiB
PHP
103 lines
2.7 KiB
PHP
<?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/>.
|
|
|
|
|
|
/**
|
|
* Native postgresql recordset.
|
|
*
|
|
* @package core
|
|
* @subpackage dml
|
|
* @copyright 2008 Petr Skoda (http://skodak.org)
|
|
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
|
|
*/
|
|
|
|
defined('MOODLE_INTERNAL') || die();
|
|
|
|
require_once($CFG->libdir.'/dml/moodle_recordset.php');
|
|
|
|
/**
|
|
* pgsql specific moodle recordset class
|
|
*/
|
|
class pgsql_native_moodle_recordset extends moodle_recordset {
|
|
|
|
protected $result;
|
|
protected $current; // current row as array
|
|
protected $bytea_oid;
|
|
protected $blobs = array();
|
|
|
|
public function __construct($result, $bytea_oid) {
|
|
$this->result = $result;
|
|
$this->bytea_oid = $bytea_oid;
|
|
|
|
// find out if there are any blobs
|
|
$numrows = pg_num_fields($result);
|
|
for($i=0; $i<$numrows; $i++) {
|
|
$type_oid = pg_field_type_oid($result, $i);
|
|
if ($type_oid == $this->bytea_oid) {
|
|
$this->blobs[] = pg_field_name($result, $i);
|
|
}
|
|
}
|
|
|
|
$this->current = $this->fetch_next();
|
|
}
|
|
|
|
public function __destruct() {
|
|
$this->close();
|
|
}
|
|
|
|
private function fetch_next() {
|
|
$row = pg_fetch_assoc($this->result);
|
|
|
|
if ($this->blobs) {
|
|
foreach ($this->blobs as $blob) {
|
|
$row[$blob] = $row[$blob] !== null ? pg_unescape_bytea($row[$blob]) : null;
|
|
}
|
|
}
|
|
|
|
return $row;
|
|
}
|
|
|
|
public function current() {
|
|
return (object)$this->current;
|
|
}
|
|
|
|
public function key() {
|
|
/// return first column value as key
|
|
if (!$this->current) {
|
|
return false;
|
|
}
|
|
$key = reset($this->current);
|
|
return $key;
|
|
}
|
|
|
|
public function next() {
|
|
$this->current = $this->fetch_next();
|
|
}
|
|
|
|
public function valid() {
|
|
return !empty($this->current);
|
|
}
|
|
|
|
public function close() {
|
|
if ($this->result) {
|
|
pg_free_result($this->result);
|
|
$this->result = null;
|
|
}
|
|
$this->current = null;
|
|
$this->blobs = null;
|
|
}
|
|
}
|