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<?php |
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/** |
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* @author CONTENT CONTROL http://www.contentcontrol-berlin.de/ |
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* @copyright CONTENT CONTROL http://www.contentcontrol-berlin.de/ |
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* @license http://www.gnu.org/licenses/gpl.html GNU General Public License |
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*/ |
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use midgard\portable\storage\connection; |
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use midgard\portable\storage\subscriber; |
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use midgard\portable\api\error\exception; |
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use midgard\portable\storage\objectmanager; |
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use midgard\portable\storage\interfaces\metadata; |
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class midgard_object_class |
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{ |
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private static function resolve_classname($guid, $include_deleted = false) |
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{ |
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$qb = connection::get_em()->createQueryBuilder(); |
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$qb->from('midgard:midgard_repligard', 'r') |
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->select('r.typename, r.object_action') |
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->where('r.guid = ?1') |
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->setParameter(1, $guid); |
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try { |
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$result = $qb->getQuery()->getSingleResult(); |
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} catch (\Doctrine\ORM\NoResultException $e) { |
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throw exception::not_exists(); |
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} |
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if ($result["object_action"] == subscriber::ACTION_PURGE) { |
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throw exception::object_purged(); |
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} |
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if (!$include_deleted && $result["object_action"] == subscriber::ACTION_DELETE) { |
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throw exception::object_deleted(); |
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} |
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if ($include_deleted && !self::has_metadata($result["typename"])) { |
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throw exception::invalid_property_value(); |
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} |
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return $result["typename"]; |
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} |
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public static function resolve_fqn($classname) |
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{ |
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$cm = connection::get_em()->getClassMetadata('midgard:' . $classname); |
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return $cm->name; |
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} |
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public static function factory($classname, $id = null) |
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{ |
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if ($classname === null) { |
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return null; |
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} |
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$classname = self::resolve_fqn($classname); |
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return new $classname($id); |
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} |
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/** |
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* @return boolean |
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*/ |
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public static function undelete($guid) |
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{ |
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try { |
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$classname = self::resolve_classname($guid, true); |
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} catch (exception $e) { |
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return false; |
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} |
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$classname = self::resolve_fqn($classname); |
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$qb = new \midgard_query_builder($classname); |
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$qb->include_deleted(); |
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$qb->add_constraint('guid', '=', $guid); |
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$results = $qb->execute(); |
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if (count($results) === 0) { |
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exception::not_exists(); |
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return false; |
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} |
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$entity = array_shift($results); |
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if (!$entity->metadata_deleted) { |
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exception::internal(new \Exception("Object is not deleted.")); |
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return false; |
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} |
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try { |
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$om = new objectmanager(connection::get_em()); |
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$om->undelete($entity); |
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} catch (\Exception $e) { |
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exception::internal($e); |
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return false; |
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} |
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midgard_connection::get_instance()->set_error(MGD_ERR_OK); |
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return true; |
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} |
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public static function get_object_by_guid($guid) |
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{ |
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if (!mgd_is_guid($guid)) { |
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throw exception::not_exists(); |
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} |
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$type = self::resolve_classname($guid); |
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return self::factory($type, $guid); |
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} |
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public static function get_property_up($classname) |
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{ |
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if (is_object($classname)) { |
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$classname = get_class($classname); |
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} |
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$cm = connection::get_em()->getClassMetadata($classname); |
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return $cm->midgard['upfield']; |
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} |
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public static function get_property_parent($classname) |
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{ |
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if (is_object($classname)) { |
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$classname = get_class($classname); |
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} |
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$cm = connection::get_em()->getClassMetadata($classname); |
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return $cm->midgard['parentfield']; |
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} |
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public static function connect_default($classname, $signal, $callback, $userdata = null) // <== check! |
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{ |
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} |
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public static function has_metadata($classname) |
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{ |
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if (is_string($classname)) { |
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return in_array('midgard\\portable\\storage\\interfaces\\metadata', class_implements($classname)); |
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} |
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if (is_object($classname)) { |
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return ($classname instanceof metadata); |
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} |
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return false; |
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} |
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public static function get_schema_value($classname, $node_name) |
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{ |
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} |
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} |
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Let?s assume that you have a directory layout like this:
and let?s assume the following content of
Bar.php
:If both files
OtherDir/Foo.php
andSomeDir/Foo.php
are loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.php
However, as
OtherDir/Foo.php
does not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php
, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: