doctrine / orm

                        }

                    }

                    if (count($targetMetadata->getIdentifierColumnNames()) != count($assoc['joinTable']['inverseJoinColumns'])) {

                        $ce[] = "The inverse join columns of the many-to-many table '" . $assoc['joinTable']['name'] . "' " .

                                "have to contain to ALL identifier columns of the target entity '". $targetMetadata->name . "', " .

                                "however '" . implode(", ", array_diff($targetMetadata->getIdentifierColumnNames(), array_values($assoc['relationToTargetKeyColumns']))) .

                                "' are missing.";

                    }

                    if (count($class->getIdentifierColumnNames()) != count($assoc['joinTable']['joinColumns'])) {

                        $ce[] = "The join columns of the many-to-many table '" . $assoc['joinTable']['name'] . "' " .

                                "' are missing.";

                    }

                    if (count($class->getIdentifierColumnNames()) != count($assoc['joinTable']['joinColumns'])) {

                        $ce[] = "The join columns of the many-to-many table '" . $assoc['joinTable']['name'] . "' " .

                                "have to contain to ALL identifier columns of the source entity '". $class->name . "', " .

                                "however '" . implode(", ", array_diff($class->getIdentifierColumnNames(), array_values($assoc['relationToSourceKeyColumns']))) .

                                "' are missing.";

                    }

                } elseif ($assoc['type'] & ClassMetadataInfo::TO_ONE) {

                    $identifierColumns = $targetMetadata->getIdentifierColumnNames();