Contents

# frozen_string_literal: false

# @!method ActiveRecord::Migration#rename_composite_type(name, to:)
# Change the name and/or schema of a composite type
#
# @param [#to_s] name (nil) The qualified name of the type
# @option [#to_s] :to (nil) The new qualified name for the type
#
# @example
#
#   rename_composite_type "point", to: "paint.colored_point"
#
# The operation is always reversible.

module PGTrunk::Operations::CompositeTypes
  # @private
  class RenameCompositeType < Base
    validates :new_name, presence: true
    validates :force, :if_exists, :columns, absence: true

    def to_sql(_version)
      [*change_schema, *change_name].join("; ")
    end

    def invert
      self.class.new(**to_h, name: new_name, to: name)
    end

    private

    def change_schema
      return if name.schema == new_name.schema

      "ALTER TYPE #{name.to_sql} SET SCHEMA #{new_name.schema.inspect};"
    end

    def change_name
      return if new_name.name == name.name

      moved = name.merge(schema: new_name.schema)
      "ALTER TYPE #{moved.to_sql} RENAME TO #{new_name.name.inspect};"
    end
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
pg_trunk-0.1.0	lib/pg_trunk/operations/composite_types/rename_composite_type.rb