function CommentStorageSchema::getSharedTableFieldSchema

File

core/modules/comment/src/CommentStorageSchema.php, line 48

Class

CommentStorageSchema

Defines the comment schema handler.

Namespace

Code

protected function getSharedTableFieldSchema(FieldStorageDefinitionInterface $storage_definition, $table_name, array $column_mapping) {
  $schema = parent::getSharedTableFieldSchema($storage_definition, $table_name, $column_mapping);
  $field_name = $storage_definition->getName();
  if ($table_name == 'comment_field_data') {
    // Remove unneeded indexes.
    unset($schema['indexes']['comment_field__pid__target_id']);
    unset($schema['indexes']['comment_field__entity_id__target_id']);
    switch ($field_name) {
      case 'thread':
        // Improves the performance of the comment__num_new index defined
        // in getEntitySchema().
        $schema['fields'][$field_name]['not null'] = TRUE;
        break;

      case 'entity_type':
      case 'field_name':
        assert($storage_definition instanceof RequiredFieldStorageDefinitionInterface);
        if ($storage_definition->isStorageRequired()) {
          // The 'entity_type' and 'field_name' are required so they also need
          // to be marked as NOT NULL.
          $schema['fields'][$field_name]['not null'] = TRUE;
        }
        break;

      case 'created':
        $this->addSharedTableFieldIndex($storage_definition, $schema, TRUE);
        break;

      case 'uid':
        $this->addSharedTableFieldForeignKey($storage_definition, $schema, 'users', 'uid');
    }
  }
  return $schema;
}