diff options
Diffstat (limited to 'activerecord/lib/active_record/connection_adapters/deduplicable.rb')
-rw-r--r-- | activerecord/lib/active_record/connection_adapters/deduplicable.rb | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/deduplicable.rb b/activerecord/lib/active_record/connection_adapters/deduplicable.rb new file mode 100644 index 0000000000..fb2fd60bbc --- /dev/null +++ b/activerecord/lib/active_record/connection_adapters/deduplicable.rb @@ -0,0 +1,29 @@ +# frozen_string_literal: true + +module ActiveRecord + module ConnectionAdapters # :nodoc: + module Deduplicable + extend ActiveSupport::Concern + + module ClassMethods + def registry + @registry ||= {} + end + + def new(*) + super.deduplicate + end + end + + def deduplicate + self.class.registry[self] ||= deduplicated + end + alias :-@ :deduplicate + + private + def deduplicated + freeze + end + end + end +end |