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;
use Friendica\BaseObject;
use Friendica\Database\DBA;
require_once 'include/dba.php';
/**
* JustInTime Configuration Adapter
*
* Default Config Adapter. Provides the best performance for pages loading few configuration variables.
*
* @author Hypolite Petovan <hypolite@mrpetovan.com>
*/
class JITConfigAdapter extends BaseObject implements IConfigAdapter
{
private $cache;
private $in_db;
public function load($cat = "config")
{
// We don't preload "system" anymore.
// This reduces the number of database reads a lot.
if ($cat === 'system') {
return;
}
$configs = DBA::select('config', ['v', 'k'], ['cat' => $cat]);
while ($config = DBA::fetch($configs)) {
$k = $config['k'];
self::getApp()->setConfigValue($cat, $k, $config['v']);
if ($cat !== 'config') {
$this->cache[$cat][$k] = $config['v'];
$this->in_db[$cat][$k] = true;
}
}
DBA::close($configs);
}
public function get($cat, $k, $default_value = null, $refresh = false)
{
$a = self::getApp();
if (!$refresh) {
// Do we have the cached value? Then return it
if (isset($this->cache[$cat][$k])) {
if ($this->cache[$cat][$k] === '!<unset>!') {
return $default_value;
} else {
return $this->cache[$cat][$k];
}
}
}
$config = DBA::selectFirst('config', ['v'], ['cat' => $cat, 'k' => $k]);
if (DBA::isResult($config)) {
// manage array value
$value = (preg_match("|^a:[0-9]+:{.*}$|s", $config['v']) ? unserialize($config['v']) : $config['v']);
// Assign the value from the database to the cache
$this->cache[$cat][$k] = $value;
$this->in_db[$cat][$k] = true;
return $value;
} elseif (isset($a->config[$cat][$k])) {
// Assign the value (mostly) from config/local.config.php file to the cache
$this->cache[$cat][$k] = $a->config[$cat][$k];
$this->in_db[$cat][$k] = false;
return $a->config[$cat][$k];
} elseif (isset($a->config[$k])) {
// Assign the value (mostly) from config/local.config.php file to the cache
$this->cache[$k] = $a->config[$k];
$this->in_db[$k] = false;
return $a->config[$k];
}
$this->cache[$cat][$k] = '!<unset>!';
$this->in_db[$cat][$k] = false;
return $default_value;
}
public function set($cat, $k, $value)
{
$a = self::getApp();
// We store our setting values in a string variable.
// So we have to do the conversion here so that the compare below works.
// The exception are array values.
$dbvalue = (!is_array($value) ? (string)$value : $value);
$stored = $this->get($cat, $k, null, true);
if (!isset($this->in_db[$cat])) {
$this->in_db[$cat] = [];
}
if (!isset($this->in_db[$cat][$k])) {
$this->in_db[$cat] = false;
}
if (($stored === $dbvalue) && $this->in_db[$cat][$k]) {
return true;
}
self::getApp()->setConfigValue($cat, $k, $value);
// Assign the just added value to the cache
$this->cache[$cat][$k] = $dbvalue;
// manage array value
$dbvalue = (is_array($value) ? serialize($value) : $dbvalue);
$result = DBA::update('config', ['v' => $dbvalue], ['cat' => $cat, 'k' => $k], true);
if ($result) {
$this->in_db[$cat][$k] = true;
}
return $result;
}
public function delete($cat, $k)
{
if (isset($this->cache[$cat][$k])) {
unset($this->cache[$cat][$k]);
unset($this->in_db[$cat][$k]);
}
$result = DBA::delete('config', ['cat' => $cat, 'k' => $k]);
return $result;
}
}