/**
* @return Nano_Migrate_ScriptEmpty
*/
public static function instance()
{
if (null == self::$instance) {
self::$instance = new self();
}
return self::$instance;
}
public function load()
{
$queries = $this->path . '/queries.php';
$script = $this->path . '/script.php';
if (file_exists($queries)) {
$sql = null;
include $queries;
if (is_array($sql)) {
$this->queries = $sql;
}
}
if (file_exists($script)) {
include_once $script;
$suffix = str_replace('-', '_', baseName($this->path));
$class = 'Nano_Migrate_Script_' . $suffix;
if (class_exists($class, false)) {
$reflection = new ReflectionClass($class);
if ($reflection->isInstantiable() && $reflection->isSubclassOf('Nano_Migrate_Script')) {
$this->script = $reflection->newInstance();
} else {
$this->script = Nano_Migrate_ScriptEmpty::instance();
}
} else {
$this->script = Nano_Migrate_ScriptEmpty::instance();
}
} else {
$this->script = Nano_Migrate_ScriptEmpty::instance();
}
}
