Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\content_moderation;
Chris@0: 
Chris@0: use Drupal\Core\Entity\ContentEntityTypeInterface;
Chris@0: use Drupal\Core\Entity\Sql\SqlContentEntityStorageSchema;
Chris@0: 
Chris@0: /**
Chris@0:  * Defines the content moderation state schema handler.
Chris@0:  */
Chris@0: class ContentModerationStateStorageSchema extends SqlContentEntityStorageSchema {
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   protected function getEntitySchema(ContentEntityTypeInterface $entity_type, $reset = FALSE) {
Chris@0:     $schema = parent::getEntitySchema($entity_type, $reset);
Chris@0: 
Chris@0:     // Creates unique keys to guarantee the integrity of the entity and to make
Chris@0:     // the lookup in ModerationStateFieldItemList::getModerationState() fast.
Chris@0:     $unique_keys = [
Chris@0:       'content_entity_type_id',
Chris@0:       'content_entity_id',
Chris@0:       'content_entity_revision_id',
Chris@0:       'workflow',
Chris@0:       'langcode',
Chris@0:     ];
Chris@0:     $schema['content_moderation_state_field_data']['unique keys'] += [
Chris@0:       'content_moderation_state__lookup' => $unique_keys,
Chris@0:     ];
Chris@0:     $schema['content_moderation_state_field_revision']['unique keys'] += [
Chris@0:       'content_moderation_state__lookup' => $unique_keys,
Chris@0:     ];
Chris@0: 
Chris@0:     return $schema;
Chris@0:   }
Chris@0: 
Chris@0: }