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# frozen_string_literal: true
module Gitlab
module Graphql
module Pagination
module Keyset
# Use the generic keyset implementation if the given ActiveRecord scope supports it.
# Note: this module is temporary, at some point it will be merged with Keyset::Connection
module GenericKeysetPagination
extend ActiveSupport::Concern
def ordered_items
return super unless Gitlab::Pagination::Keyset::Order.keyset_aware?(items)
items
end
def cursor_for(node)
return super unless Gitlab::Pagination::Keyset::Order.keyset_aware?(items)
order = Gitlab::Pagination::Keyset::Order.extract_keyset_order_object(items)
encode(order.cursor_attributes_for_node(node).to_json)
end
def slice_nodes(sliced, encoded_cursor, before_or_after)
return super unless Gitlab::Pagination::Keyset::Order.keyset_aware?(sliced)
order = Gitlab::Pagination::Keyset::Order.extract_keyset_order_object(sliced)
order = order.reversed_order if before_or_after == :before
decoded_cursor = ordering_from_encoded_json(encoded_cursor)
order.apply_cursor_conditions(sliced, decoded_cursor)
end
def sliced_nodes
return super unless Gitlab::Pagination::Keyset::Order.keyset_aware?(items)
sliced = ordered_items
sliced = slice_nodes(sliced, before, :before) if before.present?
sliced = slice_nodes(sliced, after, :after) if after.present?
sliced
end
end
end
end
end
end
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