public function testToKey()
{
$data = ['local_cacheNtb\\User.1' => 'local_cacheNtb_User_1', 'local_cacheNtb\\User.1' => 'local_cacheNtb_User_1', 'local_cacheNtb-User-1' => 'local_cacheNtb_User_1'];
foreach ($data as $input => $expected) {
$this->assertEquals($expected, CacheHelper::to_key($input));
}
}
/**
* FixMe: Currently only db and has_one fields are cached.
* @param string|int $identifier an identifier which will be used for key generation
* @param callable $callback the function which can be called to fetch the data
* @return DataObject
*/
protected function cache($identifier, $callback)
{
$serializer = CacheHelper::get_serializer();
// check for cacheable extension of data object class
$className = $this->dataClass;
if (Object::has_extension($className, 'CacheableExtension')) {
// search in cache
$cache = CacheHelper::get_cache();
$key = CacheHelper::to_key("{$className}.{$identifier}");
if ($data = $cache->load($key)) {
return $serializer->deserialize($data);
} else {
// if not found in cache, perform callback
$data = $callback();
if (!$data) {
// if result is empty, return null
return null;
}
$cachedFunctions = array_keys($data->hasOne());
foreach ($cachedFunctions as $fn) {
$data->{$fn}();
}
$cache->save($serializer->serialize($data), $key);
// return result
return $data;
}
} else {
return $callback();
}
}
private function key()
{
$name = $this->ownerBaseClass;
$id = $this->Identifier();
return CacheHelper::to_key("{$name}.{$id}");
}
