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Versions: 9
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Contents
require 'rom/sql/type_extensions'
module ROM
module SQL
module Postgres
module Types
# @api private
class ArrayTypes
attr_reader :elements
attr_reader :constructor
attr_reader :base_write_type
attr_reader :base_read_type
def initialize(base_write_type, base_read_type)
@elements = {}
@base_write_type = base_write_type
@base_read_type = base_read_type
@constructor = proc { |db_type, member|
if member
-> arr { Sequel.pg_array(arr.map { |v| member[v] }, db_type) }
else
-> arr { Sequel.pg_array(arr, db_type) }
end
}
end
def [](db_type, member_type = nil)
elements.fetch(db_type) do
name = "#{db_type}[]"
write_type = build_write_type(db_type, member_type)
read_type = build_read_type(db_type, member_type)
array_type = Types.Type(name, write_type).meta(type: db_type, read: read_type)
register_extension(array_type)
elements[db_type] = array_type
end
end
private
def build_write_type(db_type, member_type)
if member_type
base_write_type.constructor(constructor[db_type, member_type])
else
base_write_type.constructor(constructor[db_type])
end
end
def build_read_type(db_type, member_type)
if member_type && member_type.meta[:read]
base_read_type.of(member_type.meta[:read])
else
base_read_type
end
end
def register_extension(type)
TypeExtensions.register(type) { include ArrayMethods }
end
end
end
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems