/**
* Adds tags to existring data cache
* Useful, when tags are generated after data is cached
* (i.g. doctrine object cache)
*
* If appending tag already exists, we will compare version to save
* tag with newest one
*
* @param string $key
* @param array $tags
* @return boolean
*/
public function addTagsToCache($key, array $tags)
{
$cacheMetadata = new CacheMetadata($this->getCache()->get($key));
$data = $cacheMetadata->getData();
if (null === $data) {
return false;
}
$cacheMetadata->addTags($tags);
$tags = $cacheMetadata->getTags();
return $this->set($key, $data, $this->getTTL($key), $tags);
}
