3 namespace Friendica\Core\Config;
6 use Friendica\BaseObject;
7 use Friendica\Database\DBA;
10 * Preload Configuration Adapter
12 * Minimizes the number of database queries to retrieve configuration values at the cost of memory.
14 * @author Hypolite Petovan <hypolite@mrpetovan.com>
16 class PreloadConfigAdapter extends BaseObject implements IConfigAdapter
18 private $config_loaded = false;
20 public function __construct()
25 public function load($family = 'config')
27 if ($this->config_loaded) {
31 $configs = DBA::select('config', ['cat', 'v', 'k']);
32 while ($config = DBA::fetch($configs)) {
33 self::getApp()->setConfigValue($config['cat'], $config['k'], $config['v']);
37 $this->config_loaded = true;
40 public function get($cat, $k, $default_value = null, $refresh = false)
43 $config = DBA::selectFirst('config', ['v'], ['cat' => $cat, 'k' => $k]);
44 if (DBA::isResult($config)) {
45 self::getApp()->setConfigValue($cat, $k, $config['v']);
49 $return = self::getApp()->getConfigValue($cat, $k, $default_value);
54 public function set($cat, $k, $value)
56 // We store our setting values as strings.
57 // So we have to do the conversion here so that the compare below works.
58 // The exception are array values.
59 $compare_value = !is_array($value) ? (string)$value : $value;
61 if (self::getApp()->getConfigValue($cat, $k) === $compare_value) {
65 self::getApp()->setConfigValue($cat, $k, $value);
68 $dbvalue = is_array($value) ? serialize($value) : $value;
70 $result = DBA::update('config', ['v' => $dbvalue], ['cat' => $cat, 'k' => $k], true);
72 throw new Exception('Unable to store config value in [' . $cat . '][' . $k . ']');
78 public function delete($cat, $k)
80 self::getApp()->deleteConfigValue($cat, $k);
82 $result = DBA::delete('config', ['cat' => $cat, 'k' => $k]);