RelatonOmg is a Ruby gem that searches and fetches standards from The Object Management Group (OMG).

The standards are scraped from https://www.omg.org/spec

Installation

Add this line to your application’s Gemfile:

gem 'relaton-omg'

And then execute:

$ bundle install

Or install it yourself as:

$ gem install relaton-omg

Usage

Search document

Reference format is OMG + {ACRONYM} + {VERSION}

• ACRONYM is an acronym from the list of specs https://www.omg.org/spec/#all

• VERSION (optional) if omitted then the latest version is fetched

require 'relaton/omg'
=> true

item = Relaton::Omg::Bibliography.get 'OMG AMI4CCM 1.0'
[relaton-omg] INFO: (OMG AMI4CCM 1.0) Fetching from www.omg.org ...
[relaton-omg] INFO: (OMG AMI4CCM 1.0) Found: `OMG AMI4CCM 1.0`
=> #<Relaton::Bib::ItemData:0x0000000128bf7650
...

# Return nil if the document doesn't exist.
Relaton::Omg::Bibliography.get 'OMG 1111'
[relaton-omg] INFO: (OMG 1111) Fetching from www.omg.org ...
[relaton-omg] INFO: (OMG 1111) Not found.
=> nil

Serialization

item.to_xml
=> "<bibitem id="OMGAMI4CCM10" schema-version="v1.4.1">
      <fetched>2026-02-27</fetched>
      <title language="en" script="Latn" type="main">Asynchronous Method Invocation for CCM</title>
      <uri type="src">https://www.omg.org/spec/AMI4CCM/1.0/About-AMI4CCM</uri>
      <uri type="pdf">https://www.omg.org/spec/AMI4CCM/1.0/PDF</uri>
      <docidentifier type="OMG" primary="true">OMG AMI4CCM 1.0</docidentifier>
      ...
    </bibitem>"

item.to_xml bibdata: true
=>  "<bibdata schema-version="v1.4.1">
      <fetched>2026-02-27</fetched>
      <title language="en" script="Latn" type="main">Asynchronous Method Invocation for CCM</title>
      <uri type="src">https://www.omg.org/spec/AMI4CCM/1.0/About-AMI4CCM</uri>
      <uri type="pdf">https://www.omg.org/spec/AMI4CCM/1.0/PDF</uri>
      <docidentifier type="OMG" primary="true">OMG AMI4CCM 1.0</docidentifier>
      ...
    </bibdata>"

Typed links

OMG documents may have src and pdf link source types.

item.source[0].type
=> "src"

item.source[0].content
=> "https://www.omg.org/spec/AMI4CCM/1.0/About-AMI4CCM"

Create bibliographic item from XML

xml = File.read 'spec/fixtures/omg_ami4ccm_1_0.xml', encoding: 'UTF-8'
item = Relaton::Omg::Bibitem.from_xml xml
=> #<Relaton::Bib::ItemData:0x00000001248f8c00
...

Create bibliographic item from YAML

yaml = File.read 'spec/fixtures/omg_ami4ccm_1_0.yaml', encoding: 'UTF-8'
item = Relaton::Omg::Item.from_yaml yaml
=> #<Relaton::Bib::ItemData:0x000000012813b180
...

Logging

RelatonOmg uses the relaton-logger gem for logging. By default, it logs to STDOUT. To change the log levels and add other loggers, read the relaton-logger documentation.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/relaton/relaton-omg.

License

The gem is available as open source under the terms of the MIT License.