class OCI8::Object::Base

def method_missing(method_id, *args)
  if @attributes.is_a? Array
    return @attributes if method_id == :to_ary
    super
  end
  # getter func
  if @attributes.has_key?(method_id)
    if args.length != 0
      raise ArgumentError, "wrong number of arguments (#{args.length} for 0)"
    end
    return @attributes[method_id]
  end
  # setter func
  method_name = method_id.to_s
  if method_name[-1] == ?=
    attr = method_name[0...-1].intern
    if @attributes.has_key?(attr)
      if args.length != 1
        raise ArgumentError, "wrong number of arguments (#{args.length} for 1)"
      end
      return @attributes[attr] = args[0]
    end
  end
  super if @con.nil?
  tdo = @con.get_tdo_by_class(self.class)
  return_type = tdo.instance_methods[method_id]
  if return_type == :none
    # procedure
    bind_arg_helper = BindArgumentHelper.new(*args)
    sql = <<EOS
E
#{tdo.typename} := :self;
#{method_id}(#{bind_arg_helper.arg_str});
f := val;
    csr = @con.parse_internal(sql)
    begin
      csr.bind_param(:self, nil, :named_type_internal, tdo)
      csr[:self].attributes = self
      bind_arg_helper.exec(@con, csr)
      @attributes = csr[:self].attributes
    ensure
      csr.close
    end
    return nil
  elsif return_type
    # function
    bind_arg_helper = BindArgumentHelper.new(*args)
    sql = <<EOS
E
#{tdo.typename} := :self;
:= val.#{method_id}(#{bind_arg_helper.arg_str});
f := val;
    csr = @con.parse_internal(sql)
    begin
      csr.bind_param(:self, nil, :named_type_internal, tdo)
      csr.bind_param(:rv, nil, return_type)
      csr[:self].attributes = self
      bind_arg_helper.exec(@con, csr)
      @attributes = csr[:self].attributes
      rv = csr[:rv]
    ensure
      csr.close
    end
    return rv
  end
  # The method is not found.
  super
end # method_missing