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Contents
# -*- coding: utf-8 -*-
#
# Copyright (C) 2013 Kouhei Sutou <kou@clear-code.com>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License version 2.1 as published by the Free Software Foundation.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
module Groonga
# Represents sub records of a {Record}. Grouped result set by
# {Table#group} only has sub records.
#
# {SubRecords} acts like an ::Array.
class SubRecords
include Enumerable
# The record that has this sub records.
attr_reader :record
# Creates a sub records container for the _record_.
#
# Normally, users don't need to instantiate {SubRecords}
# directly. {Record#sub_records} creates and returns a
# {SubRecords}.
#
# @param record [Record] The record that has this sub records.
def initialize(record)
@record = record
end
# @yield [record] Gives a sub record to the block.
# @yieldparam record [Record] A sub record.
# @return [void]
def each(&block)
@record.table.each_sub_record(@record.record_raw_id, &block)
end
# @return [Array<Record>] Sub records as ::Array.
def to_a
@sub_records ||= super
end
# Acts as ::Array
alias_method :to_ary, :to_a
# @param index [Integer] A 0-origin index.
# @return [Record] A sub record at _index_.
def [](index)
to_a[index]
end
end
end
Version data entries
36 entries across 36 versions & 1 rubygems