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 Configuration Adapter
*
* Minimizes the number of database queries to retrieve configuration values at the cost of memory.
*
* @author Hypolite Petovan <hypolite@mrpetovan.com>
*/
class PreloadConfigAdapter extends AbstractDbaConfigAdapter implements IConfigAdapter
{
private $config_loaded = false;
/**
* {@inheritdoc}
*/
public function load($cat = 'config')
{
$return = [];
if (!$this->isConnected()) {
return $return;
}
if ($this->config_loaded) {
return $return;
}
$configs = DBA::select('config', ['cat', 'v', 'k']);
while ($config = DBA::fetch($configs)) {
$value = $config['v'];
if (isset($value) && $value !== '') {
$return[$config['cat']][$config['k']] = $value;
} else {
$return[$config['cat']][$config['k']] = '!<unset>!';
}
}
DBA::close($configs);
$this->config_loaded = true;
return $return;
}
/**
* {@inheritdoc}
*/
public function get($cat, $key)
{
if (!$this->isConnected()) {
return '!<unset>!';
}
$config = DBA::selectFirst('config', ['v'], ['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 $value;
}
}
return '!<unset>!';
}
/**
* {@inheritdoc}
*/
public function set($cat, $key, $value)
{
if (!$this->isConnected()) {
return false;
}
// 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($cat, $key) === $compare_value) {
return true;
}
// manage array value
$dbvalue = is_array($value) ? serialize($value) : $value;
$result = DBA::update('config', ['v' => $dbvalue], ['cat' => $cat, 'k' => $key], true);
return $result;
}
/**
* {@inheritdoc}
*/
public function delete($cat, $key)
{
if (!$this->isConnected()) {
return false;
}
$result = DBA::delete('config', ['cat' => $cat, 'k' => $key]);
return $result;
}
/**
* {@inheritdoc}
*/
public function isLoaded($cat, $key)
{
if (!$this->isConnected()) {
return false;
}
return $this->config_loaded;
}
}