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# frozen_string_literal: true
module Gitlab
module BackgroundMigration
module UserMentions
module Models
module Concerns
module Namespace
# isolate recursive traversal code for namespace hierarchy
module RecursiveTraversal
extend ActiveSupport::Concern
def root_ancestor
return self if persisted? && parent_id.nil?
strong_memoize(:root_ancestor) do
Gitlab::ObjectHierarchy
.new(self.class.where(id: id))
.base_and_ancestors
.reorder(nil)
.find_by(parent_id: nil)
end
end
# Returns all ancestors, self, and descendants of the current namespace.
def self_and_hierarchy
Gitlab::ObjectHierarchy
.new(self.class.where(id: id))
.all_objects
end
# Returns all the ancestors of the current namespaces.
def ancestors
return self.class.none unless parent_id
Gitlab::ObjectHierarchy
.new(self.class.where(id: parent_id))
.base_and_ancestors
end
# returns all ancestors upto but excluding the given namespace
# when no namespace is given, all ancestors upto the top are returned
def ancestors_upto(top = nil, hierarchy_order: nil)
Gitlab::ObjectHierarchy.new(self.class.where(id: id))
.ancestors(upto: top, hierarchy_order: hierarchy_order)
end
def self_and_ancestors(hierarchy_order: nil)
return self.class.where(id: id) unless parent_id
Gitlab::ObjectHierarchy
.new(self.class.where(id: id))
.base_and_ancestors(hierarchy_order: hierarchy_order)
end
# Returns all the descendants of the current namespace.
def descendants
Gitlab::ObjectHierarchy
.new(self.class.where(parent_id: id))
.base_and_descendants
end
def self_and_descendants
Gitlab::ObjectHierarchy
.new(self.class.where(id: id))
.base_and_descendants
end
end
end
end
end
end
end
end
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