function CommentStorageSchema::getSharedTableFieldSchema

Overrides SqlContentEntityStorageSchema::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;
}