/**
* Adds a cache to the stack specification
*
* @param \LayerCache\Cache\CachingLayer|string $cache
* @return \LayerCache\StackBuilder
*/
public function addLayer($cache)
{
if (is_object($cache)) {
if (!$cache instanceof CachingLayer) {
throw new \LayerCache\Exception('Cache should implement \\LayerCache\\Cache\\CachingLayer interface!');
}
$obj = $cache;
} elseif (is_string($cache)) {
if (!$this->cacheMap->has($cache)) {
throw new \LayerCache\Exception("No named cache found: '{$cache}'");
}
$obj = $this->cacheMap->get($cache);
} else {
throw new Exception('Cache should be an object or a string');
}
$this->currentLayer = $this->createLayer($obj);
$this->layers[] = $this->currentLayer;
return $this;
}
/**
* Returns true if the named stack exists, false otherwise
*
* @static
* @param string $name
* @return bool
*/
public static function hasStack($name)
{
return self::$stackMap && self::$stackMap->has($name);
}