3 namespace Friendica\Core\Config;
6 use Friendica\Database\DBA;
9 * Preload Configuration Adapter
11 * Minimizes the number of database queries to retrieve configuration values at the cost of memory.
13 * @author Hypolite Petovan <hypolite@mrpetovan.com>
15 class PreloadConfigAdapter implements IConfigAdapter
17 private $config_loaded = false;
20 * @var IConfigCache The config cache of this driver
25 * @param IConfigCache $configCache The config cache of this driver
27 public function __construct(IConfigCache $configCache)
29 $this->configCache = $configCache;
36 public function load($family = 'config')
38 if ($this->config_loaded) {
42 $configs = DBA::select('config', ['cat', 'v', 'k']);
43 while ($config = DBA::fetch($configs)) {
44 $this->configCache->set($config['cat'], $config['k'], $config['v']);
48 $this->config_loaded = true;
54 public function get($cat, $k, $default_value = null, $refresh = false)
57 $config = DBA::selectFirst('config', ['v'], ['cat' => $cat, 'k' => $k]);
58 if (DBA::isResult($config)) {
59 $this->configCache->set($cat, $k, $config['v']);
63 $return = $this->configCache->get($cat, $k, $default_value);
71 public function set($cat, $k, $value)
73 // We store our setting values as strings.
74 // So we have to do the conversion here so that the compare below works.
75 // The exception are array values.
76 $compare_value = !is_array($value) ? (string)$value : $value;
78 if ($this->configCache->get($cat, $k) === $compare_value) {
82 $this->configCache->set($cat, $k, $value);
85 $dbvalue = is_array($value) ? serialize($value) : $value;
87 $result = DBA::update('config', ['v' => $dbvalue], ['cat' => $cat, 'k' => $k], true);
89 throw new Exception('Unable to store config value in [' . $cat . '][' . $k . ']');
98 public function delete($cat, $k)
100 $this->configCache->delete($cat, $k);
102 $result = DBA::delete('config', ['cat' => $cat, 'k' => $k]);