/**
* 取得一个数据数据库连接对象
*
* @param mix $params
* @return object
*/
public static function get($db = 'default', $new = false)
{
if (empty($db)) {
$db = 'default';
}
$configs = Hi_Store::get('config')->db->{$db};
if (empty($configs)) {
throw new Hi_Db_Exception('没有找到对应的数据库配置');
}
foreach ($configs as $cs) {
$params[] = get_object_vars($cs);
}
//为每个数据库链接分配key
$key = 'db-' . md5(serialize($params));
//如果不强制新建连接，从连接缓存中选取
if (!$new) {
$db = Hi_Store::get($key);
if ($db instanceof Hi_Db_Adapter_Abstract) {
return $db;
}
}
try {
if (!is_array($params)) {
throw new Hi_Db_Exception('数据库配置错误');
}
$adapter = ucwords($params[0]['type']);
$adapterClass = "Hi_Db_Adapter_{$adapter}";
$adapter = new $adapterClass($params);
Hi_Store::set($key, $adapter);
return $adapter;
} catch (Hi_Db_Exception $e) {
throw $e;
}
}
/**
* 构造一个缓存对象
*
* @param string $type 缓存的类型，当前memcached和file可选
* @param array $options
* @throws Hi_Cache_Exception
*/
public function __construct($type = 'file', $options = array())
{
$ts = array('file', 'memcached');
$type = strtolower($type);
if (!in_array($type, $ts, true)) {
throw new Hi_Cache_Exception('The cache type is "file" or "memcached"');
}
if ($type == 'memcached') {
$options['appid'] = Hi_Env::$APPID;
}
$cacheClass = 'Hi_Cache_' . ucwords($type);
$options['type'] = $type;
$key = md5(serialize($options));
$this->_backend = Hi_Store::get($key);
if ($this->_backend instanceof $cacheClass) {
return;
}
$this->_backend = new $cacheClass($options);
Hi_Store::set($key, $this->_backend);
}
public function __construct($action)
{
$this->_config = Hi_Store::get('config');
$this->_action = $action;
}
