cast

# File activerecord/lib/active_record/connection_adapters/postgresql/oid/point.rb, line 16
          def cast(value)
            case value
            when ::String
              return if value.blank?

              if value[0] == "(" && value[-1] == ")"
                value = value[1...-1]
              end
              x, y = value.split(",")
              build_point(x, y)
            when ::Array
              build_point(*value)
            else
              value
            end
          end