friendica/src/Core/Config/PreloadConfigAdapter.php

87 lines
2.0 KiB
PHP

<?php
namespace Friendica\Core\Config;
use Exception;
use Friendica\BaseObject;
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 BaseObject implements IConfigAdapter
{
private $config_loaded = false;
public function __construct()
{
$this->load();
}
public function load($family = 'config')
{
if ($this->config_loaded) {
return;
}
$configs = DBA::select('config', ['cat', 'v', 'k']);
while ($config = DBA::fetch($configs)) {
self::getApp()->setConfigValue($config['cat'], $config['k'], $config['v']);
}
DBA::close($configs);
$this->config_loaded = true;
}
public function get($cat, $k, $default_value = null, $refresh = false)
{
if ($refresh) {
$config = DBA::selectFirst('config', ['v'], ['cat' => $cat, 'k' => $k]);
if (DBA::isResult($config)) {
self::getApp()->setConfigValue($cat, $k, $config['v']);
}
}
$return = self::getApp()->getConfigValue($cat, $k, $default_value);
return $return;
}
public function set($cat, $k, $value)
{
// 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 : $value;
if (self::getApp()->getConfigValue($cat, $k) === $compare_value) {
return true;
}
self::getApp()->setConfigValue($cat, $k, $value);
// manage array value
$dbvalue = is_array($value) ? serialize($value) : $value;
$result = DBA::update('config', ['v' => $dbvalue], ['cat' => $cat, 'k' => $k], true);
if (!$result) {
throw new Exception('Unable to store config value in [' . $cat . '][' . $k . ']');
}
return true;
}
public function delete($cat, $k)
{
self::getApp()->deleteConfigValue($cat, $k);
$result = DBA::delete('config', ['cat' => $cat, 'k' => $k]);
return $result;
}
}