/**
* Creates a singleton of a Kohana Cache group. If no group is supplied
* the __default__ cache group is used.
*
* // Create an instance of the default group
* $default_group = Cache::instance();
*
* // Create an instance of a group
* $foo_group = Cache::instance('foo');
*
* // Access an instantiated group directly
* $foo_group = Cache::$instances['default'];
*
* @param string the name of the cache group to use [Optional]
* @return Anqh_Cache
* @throws Kohana_Cache_Exception
*/
public static function instance($group = NULL)
{
return parent::instance($group);
}
private function selectExecute()
{
$select = DB::select()->from($this->table);
foreach ($this->where as $key => $value) {
$select->where($key, '=', $value);
}
if ($this->cached) {
$keycache = $this->getKeyCached();
$cache = Kohana_Cache::instance('memcache')->get($keycache);
if ($cache !== null) {
return $cache;
}
}
if ($this->limit == 1) {
$select = $select->execute()->current();
} else {
$select = $select->execute()->as_array();
}
if ($this->cached) {
Kohana_Cache::instance('memcache')->set($keycache, $select, $this->cached);
}
if ($select) {
return $select;
}
return false;
}
