Friendica Communications Platform (please note that this is a clone of the repository at github, issues are handled there) https://friendi.ca
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<?php
namespace Friendica\Core\Config\Adapter;
use Friendica\Database\DBA;
/**
* Preload User Configuration Adapter
*
* Minimizes the number of database queries to retrieve configuration values at the cost of memory.
*
* @author Hypolite Petovan <hypolite@mrpetovan.com>
*/
class PreloadPConfigAdapter extends AbstractDbaConfigAdapter implements IPConfigAdapter
{
/**
* @var array true if config for user is loaded
*/
private $config_loaded;
/**
* @param int $uid The UID of the current user
*/
public function __construct($uid = null)
{
parent::__construct();
$this->config_loaded = [];
if (isset($uid)) {
$this->load($uid, 'config');
}
}
/**
* {@inheritdoc}
*/
public function load($uid, $cat)
{
$return = [];
if (empty($uid)) {
return $return;
}
if (!$this->isLoaded($uid, $cat, null)) {
return $return;
}
$pconfigs = DBA::select('pconfig', ['cat', 'v', 'k'], ['uid' => $uid]);
while ($pconfig = DBA::fetch($pconfigs)) {
$value = $pconfig['v'];
if (isset($value) && $value !== '') {
$return[$pconfig['cat']][$pconfig['k']] = $value;
} else {
$return[$pconfig['cat']][$pconfig['k']] = '!<unset>!';
}
}
DBA::close($pconfigs);
$this->config_loaded[$uid] = true;
return $return;
}
/**
* {@inheritdoc}
*/
public function get($uid, $cat, $key)
{
if (!$this->isConnected()) {
return '!<unset>!';
}
if (!$this->isLoaded($uid, $cat, $key)) {
$this->load($uid, $cat);
}
$config = DBA::selectFirst('pconfig', ['v'], ['uid' => $uid, 'cat' => $cat, 'k' => $key]);
if (DBA::isResult($config)) {
// manage array value
$value = (preg_match("|^a:[0-9]+:{.*}$|s", $config['v']) ? unserialize($config['v']) : $config['v']);
if (isset($value) && $value !== '') {
return $value;
}
}
return '!<unset>!';
}
/**
* {@inheritdoc}
*/
public function set($uid, $cat, $key, $value)
{
if (!$this->isConnected()) {
return false;
}
if (!$this->isLoaded($uid, $cat, $key)) {
$this->load($uid, $cat);
}
// We store our setting values as strings.
// So we have to do the conversion here so that the compare below works.
// The exception are array values.
$compare_value = !is_array($value) ? (string)$value : $value;
if ($this->get($uid, $cat, $key) === $compare_value) {
return true;
}
// manage array value
$dbvalue = is_array($value) ? serialize($value) : $value;
$result = DBA::update('pconfig', ['v' => $dbvalue], ['uid' => $uid, 'cat' => $cat, 'k' => $key], true);
return $result;
}
/**
* {@inheritdoc}
*/
public function delete($uid, $cat, $key)
{
if (!$this->isConnected()) {
return false;
}
if (!$this->isLoaded($uid, $cat, $key)) {
$this->load($uid, $cat);
}
$result = DBA::delete('pconfig', ['uid' => $uid, 'cat' => $cat, 'k' => $key]);
return $result;
}
/**
* {@inheritdoc}
*/
public function isLoaded($uid, $cat, $key)
{
if (!$this->isConnected()) {
return false;
}
return isset($this->config_loaded[$uid]) && $this->config_loaded[$uid];
}
}