/** * {@inheritdoc} */ public function checkIntegrity(ExecutionMetadataStateInterface $metadata_state) { $violation_list = new IntegrityViolationList(); if (empty($this->configuration['list'])) { $violation_list->addViolationWithMessage($this->t('List variable is missing.')); return $violation_list; } try { $list_definition = $metadata_state->fetchDefinitionByPropertyPath($this->configuration['list']); } catch (RulesIntegrityException $e) { $violation_list->addViolationWithMessage($this->t('List variable %list does not exist. @message', ['%list' => $this->configuration['list'], '@message' => $e->getMessage()])); return $violation_list; } $list_item_name = isset($this->configuration['list_item']) ? $this->configuration['list_item'] : 'list_item'; if ($metadata_state->hasDataDefinition($list_item_name)) { $violation_list->addViolationWithMessage($this->t('List item name %name conflicts with an existing variable.', ['%name' => $list_item_name])); return $violation_list; } if ($list_definition instanceof ListDataDefinitionInterface) { $list_item_definition = $list_definition->getItemDefinition(); $metadata_state->setDataDefinition($list_item_name, $list_item_definition); $violation_list = parent::checkIntegrity($metadata_state); // Remove the list item variable after the loop, it is out of scope now. $metadata_state->removeDataDefinition($list_item_name); return $violation_list; } $violation_list->addViolationWithMessage($this->t('The data type of list variable %list is not a list.', ['%list' => $this->configuration['list']])); return $violation_list; }