rtm
0.3.0
<h4>Ruby Topic Maps (RTM)</h4>
<p>
RTM is a Topic Maps engine written in Ruby. See http://rtm.topicmapslab.de/
for instructions. Several backends and extensions are available as separate
gems.
</p>
<h4>Overview</h4>
<p>
From a developer’s perspective, RTM is a schema-less database
management system. The Topic Maps standard (described below) on which RTM
is based provides a way of creating a self-describing schema just by using
it.
</p>
<h4>Quickstart</h4>
<pre>
require 'rtm'
connection = RTM.connect # uses the default Ontopia in-memory backend
topic_map = connection.create "http://example.org/my_topic_map/"
some_topic = topicmap.get!("identifier_of_the_topic")
some_topic["-"] = "default name for the topic"
topic_map.to_xtm("my_xtm_file.xtm")
</pre>
<h4>Topic Maps</h4>
<p>
Topic Maps is an international industry standard (ISO13250) for
interchangeably representing information about the structure of information
resources used to define topics, and the relationships between topics. A
set of one or more interrelated documents that employs the notation defined
by this International Standard is called a topic map. A topic map defines a
multidimensional topic space - a space in which the locations are topics,
and in which the distances between topics are measurable in terms of the
number of intervening topics which must be visited in order to get from one
topic to another, and the kinds of relationships that define the path from
one topic to another, if any, through the intervening topics, if any. In
addition, information objects can have properties, as well as values for
those properties, assigned to them. The Topic Maps Data Model which is used
in this implementation can be found on
http://www.isotopicmaps.org/sam/sam-model/.
</p>
<h4>Backends</h4>
<ul>
<li>rtm-ontopia: JRuby only, recommended, uses Ontopia:
http://code.google.com/p/ontopia/
</li>
<li>rtm-tinytim: JRuby only, uses TinyTiM: http://tinytim.sourceforge.net/
</li>
<li>rtm-activerecord: uses a custom ActiveRecord schema
</li>
</ul>
<h4>Extensions</h4>
<ul>
<li>rtm-tmql: Adds support for the Topic Maps Query Language (TMQL),
http://isotopicmaps.org/tmql/
</li>
<li>rtm-tmcl: Adds support for the Topic Maps Constraint Language (TMCL),
http://isotopicmaps.org/tmcl/
</li>
</ul>
<h4>License</h4>
<p>
Copyright 2009 Topic Maps Lab, University of Leipzig. Apache License,
Version 2.0
</p>
installgem install rtm
