/**
* 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();
}
}
public function testCacheDataListWithoutCacheableExtension()
{
$key = 'Member_1';
Member::remove_extension('CacheableExtension');
$this->cacheDataObject();
$cache = CacheHelper::get_cache()->load($key);
$this->assertFalse($cache);
}
/**
* @param SS_HTTPRequest $request
*/
public function run($request)
{
CacheHelper::get_cache()->clean(Zend_Cache::CLEANING_MODE_ALL);
}
/**
*
*/
public function onBeforeDelete()
{
// delete the cache
CacheHelper::get_cache()->remove($this->key());
parent::onBeforeDelete();
}
public function testGetCache()
{
$cache = CacheHelper::get_cache();
$this->assertEquals(ClassInfo::class_name($cache), 'Zend_Cache_Frontend_Function');
}
