Sha256: f192d3ca37d32b45a59f186967315c47f19e1f79ad47b05e4ec727ef2b70b95d
Contents?: true
Size: 696 Bytes
Versions: 5
Compression:
Stored size: 696 Bytes
Contents
module Alf
module Algebra
class Rename
include Operator
include Relational
include Unary
signature do |s|
s.argument :renaming, Renaming, {}
end
def heading
@heading ||= operand.heading.rename(renaming)
end
def keys
@keys ||= operand.keys.rename(renaming)
end
def complete_renaming
renaming.complete(operand.heading.to_attr_list)
end
private
def _type_check(options)
no_unknown!(renaming.to_attr_list - operand.attr_list)
no_name_clash!(renaming.invert.to_attr_list, operand.attr_list)
end
end # class Rename
end # module Algebra
end # module Alf
Version data entries
5 entries across 5 versions & 1 rubygems