public function save(IStorable $storable)
{
$this->createSchema($schema = $storable->schema());
$schema->validate($store = $storable->store($this));
/**
* exactly empty arrays are unmodified state; otherwise NULL is delete state
*/
if (is_array($store) && empty($store)) {
return $storable;
}
$guid = $this->hasStorable($guid = $storable->guid()) ? $guid : null;
$this->register($storable);
if (empty($store) && $guid !== null) {
$this->delete($storable);
} else {
if (!empty($store) && $guid === null) {
$this->create($storable, $store);
} else {
if (!empty($store) && $guid !== null) {
$this->update($storable, $store);
}
}
}
return $storable;
}
