/**
* 析构时将本次请求所加载的类写入到文件缓存，下次预先加载
*/
public function __destruct()
{
$path = $this->_reqPath();
$key = $path . '::classes';
$cache = Hi_Cache::factory('file');
if (!$cache->exist($key)) {
$cache->set($key, self::$_classes, 3600);
}
}
/**
* 获取表的信息，相当于执行 desc table
*
* @param $caseSensitive<bool> 字段名是否大小写敏感
* @return array
*/
public function info()
{
if (!empty($this->_info)) {
return $this->_info;
}
$cacheKey = "db_table_info_{$this->_name}";
$cache = Hi_Cache::factory();
$info = $cache->get($cacheKey, true);
if ($info) {
$this->_info = $info;
return $info;
}
$sql = "DESC {$this->_name}";
try {
$this->_info = $this->_db->fetchAssoc($sql, 'Field');
$pks = array();
foreach ($this->_info as $key => $val) {
if ($val['Key'] == 'PRI') {
$pks[] = $key;
if ($val['Extra'] == 'auto_increment') {
$this->_isAutoIncrement = true;
}
}
if ($val['Key'] == 'UNI') {
$this->_uniqueKeys[] = $key;
}
}
if (sizeof($pks) > 1) {
throw new Hi_Db_Table_Exception('该类暂时还不支持联合主键的表');
}
$this->_primaryKey = $pks[0];
if (isset($cache)) {
$cache->set($cacheKey, $this->_info);
}
return $this->_info;
} catch (Hi_Db_Exception $e) {
throw new Hi_Db_Table_Exception($e->getMessage(), $e->getCode());
}
}
private function _setMcCache()
{
$this->_cache = Hi_Cache::factory('memcached');
}
public function index()
{
echo 'Hello, world!';
$cache = Hi_Cache::factory('file');
echo $cache->get('xxxx');
}
