/**
* Factory for cache implementations.
*
* @param array $options Cache options.
*
* @throws CacheException
* @return ICache
*/
private static function _returnCacheFromImpl($options)
{
switch ($options['impl']) {
case 'file':
return FileCacheImpl::getInstance($options);
case 'apc':
return ApcCacheImpl::getInstance($options);
case 'dummy':
return DummyCacheImpl::getInstance($options);
case 'zend':
return ZendCacheImpl::getInstance($options['zend']);
case 'memcached':
return MemcachedCacheImpl::getInstance($options['memcached']);
default:
throw new CacheException('Invalid cache impl requested');
}
}
/**
* Returns an instance of a cache.
*
* @param array $options Options for the cache backend.
*
* @return DummyCacheImpl
*/
public static function getInstance($options = array())
{
$dir = $options['directory'];
if (!isset(self::$_instances[$dir])) {
$ret = new FileCacheImpl($options);
self::$_instances[$dir] = $ret;
$ret->_init();
} else {
$ret = self::$_instances[$dir];
}
return $ret;
}