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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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                use midgard\portable\api\dbobject;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class midgard_object_class  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private static function resolve_classname(string $guid, bool $include_deleted = false) : string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $qb = connection::get_em()->createQueryBuilder();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $qb->from(connection::get_fqcn('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 factory(?string $classname, $id = null) : ?dbobject  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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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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                        $classname = connection::get_fqcn($classname);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return new $classname($id);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public static function undelete(string $guid) : bool  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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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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                        $classname = connection::get_fqcn($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 (empty($results)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            exception::not_exists();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return false;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $entity = $results[0];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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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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                             1                          | 
                
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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(string $guid) : dbobject  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                             3                          | 
                
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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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                             7                          | 
                
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                        $type = self::resolve_classname($guid);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        return self::factory($type, $guid);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                             7                          | 
                
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                             1                          | 
                
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                    public static function get_property_up(string $classname) : ?string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                             6                          | 
                
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                        $cm = connection::get_em()->getClassMetadata($classname);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                             4                          | 
                
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                        return $cm->midgard['upfield'];  | 
            
                            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                             2                          | 
                
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                    public static function get_property_parent(string $classname) : ?string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                             2                          | 
                
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                        $cm = connection::get_em()->getClassMetadata($classname);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                             2                          | 
                
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                        return $cm->midgard['parentfield'];  | 
            
                            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                             2                          | 
                
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                    public static function has_metadata($classname) : bool  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                             2                          | 
                
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                        if (is_string($classname)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                             2                          | 
                
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                            return in_array(metadata::class, class_implements($classname));  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (is_object($classname)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                             7                          | 
                
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                            return $classname instanceof metadata;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                             7                          | 
                
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                        return false;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                             7                          | 
                
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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Let?s assume that you have a directory layout like this:
. |-- OtherDir | |-- Bar.php | `-- Foo.php `-- SomeDir `-- Foo.phpand let?s assume the following content of
Bar.php:If both files
OtherDir/Foo.phpandSomeDir/Foo.phpare 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.phpHowever, as
OtherDir/Foo.phpdoes 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: