public static function instance(EnvironmentConfig $config)
{
$configHash = md5(json_encode($config->getConfiguration()));
if (isset(self::$instances[$configHash])) {
return self::$instances[$configHash];
}
$pdo = new PDO($config->getDsn(), $config->getUsername(), $config->getPassword());
if ($config->getAdapter() == 'mysql') {
$adapter = new MysqlAdapter($pdo);
} elseif ($config->getAdapter() == 'pgsql') {
$adapter = new PgsqlAdapter($pdo);
} elseif ($config->getAdapter() == 'sqlite') {
$adapter = new SqliteAdapter($pdo);
} else {
throw new InvalidArgumentValueException('Unknown adapter "' . $config->getAdapter() . '". Use one of value: "mysql", "pgsql", "sqlite".');
}
$adapter->setCharset($config->getCharset());
self::$instances[$configHash] = $adapter;
return $adapter;
}
