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Diffstat (limited to 'lib/gitlab/database/postgres_index.rb')
-rw-r--r-- | lib/gitlab/database/postgres_index.rb | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/lib/gitlab/database/postgres_index.rb b/lib/gitlab/database/postgres_index.rb new file mode 100644 index 00000000000..2a9f23f0098 --- /dev/null +++ b/lib/gitlab/database/postgres_index.rb @@ -0,0 +1,31 @@ +# frozen_string_literal: true + +module Gitlab + module Database + class PostgresIndex < ActiveRecord::Base + self.table_name = 'postgres_indexes' + self.primary_key = 'identifier' + + scope :by_identifier, ->(identifier) do + raise ArgumentError, "Index name is not fully qualified with a schema: #{identifier}" unless identifier =~ /^\w+\.\w+$/ + + find(identifier) + end + + # A 'regular' index is a non-unique index, + # that does not serve an exclusion constraint and + # is defined on a table that is not partitioned. + scope :regular, -> { where(unique: false, partitioned: false, exclusion: false)} + + scope :random_few, ->(how_many) do + limit(how_many).order(Arel.sql('RANDOM()')) + end + + scope :not_match, ->(regex) { where("name !~ ?", regex)} + + def to_s + name + end + end + end +end |