diff options
Diffstat (limited to 'app/models/preloaders/group_root_ancestor_preloader.rb')
-rw-r--r-- | app/models/preloaders/group_root_ancestor_preloader.rb | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/app/models/preloaders/group_root_ancestor_preloader.rb b/app/models/preloaders/group_root_ancestor_preloader.rb new file mode 100644 index 00000000000..3ca713d9635 --- /dev/null +++ b/app/models/preloaders/group_root_ancestor_preloader.rb @@ -0,0 +1,32 @@ +# frozen_string_literal: true + +module Preloaders + class GroupRootAncestorPreloader + def initialize(groups, root_ancestor_preloads = []) + @groups = groups + @root_ancestor_preloads = root_ancestor_preloads + end + + def execute + return unless ::Feature.enabled?(:use_traversal_ids, default_enabled: :yaml) + + # type == 'Group' condition located on subquery to prevent a filter in the query + root_query = Namespace.joins("INNER JOIN (#{join_sql}) as root_query ON root_query.root_id = namespaces.id") + .select('namespaces.*, root_query.id as source_id') + + root_query = root_query.preload(*@root_ancestor_preloads) if @root_ancestor_preloads.any? + + root_ancestors_by_id = root_query.group_by(&:source_id) + + @groups.each do |group| + group.root_ancestor = root_ancestors_by_id[group.id].first + end + end + + private + + def join_sql + Group.select('id, traversal_ids[1] as root_id').where(id: @groups.map(&:id)).to_sql + end + end +end |