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<h1 class="title">Open-source Java-based OMG DDS implementation<br>
<i><font size="-1">by Fouad Allaoui, Ahmed Yehdih, Didier Donsez (advisor)<br>(Version : 20/08/2005)</font></i>
</h1>
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<p id="toc">
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<ul>
<li class="tm2"><a href="#download">Download</a></li>
<li class="tm2"><a href="#licence">Licence Terms</a></li>
<li class="tm2"><a href="#presentation">What is Data Distribution Service (DDS) ?</a></li>
<li class="tm2"><a href="#installation">Installation</a></li>
<li class="tm2"><a href="#demonstrations">Demonstrations</a></li>
<li class="tm2"><a href="#documentation">Documentation</a></li>
<li class="tm2"><a href="#contact">Contact</a></li>
</ul>
</font>
</p>
</ul>
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</p>
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<b>The distribution provides an open-source Java-based DDS-DCPS implementation.<br>The purpose of this implementation is pedagogical and demontrations</b>
<h1 class="title" id="download">Download</h1>
<p>
Download the <a href="http://www-adele.imag.fr/~donsez/dev/dds/dds.zip">latest distribution</a>.
</p>
<h1 class="title" id="licence">Licence terms</h1>
<p>
Read the <a href="LICENCE.txt">licence terms</a>.
</p>
<h1 class="title" id="presentation">What is Data Distribution Service (DDS) ?</h1>
<p>
The Object Management Group (OMG) is an international organization
responsible for middleware standards. The OMG has recently adopted
the specification for the Data Distribution Service for Real-Time
Systems; which establishes a standard interface for publish-subscribe
communications. DDS satisfies a long awaited need
for a fast, flexible, fault tolerant publish-subscribe based data
distribution service.<br><br>
The <a href="http://www.omg.org/docs/formal/04-12-02.pdf">OMG-DDS</a> specification describes two levels of interfaces:<br>
<ul>
<li>A lower DCPS (Data-Centric Publish-Subscribe) level that is targeted towards the
efficient delivery of the proper information to the proper recipients.<br><br></li>
<li>An optional higher DLRL (Data Local Reconstruction Layer) level, which allows
for a simple integration of the Service into the application layer.</li>
</ul>
A report (in french) is provided in the $DDS_HOME/docs directory.
</p>
<h1 class="title" id="installation">Installation</h1>
<p>
Follows these steps to install the environement and DDS application :<br>
<ol>
<li>install <a href="http://java.sun.com">JDK</a> and <a href http://ant.apache.org>the Java-based build tool Ant</a> (configure your path).</li>
<li>install an ORB which provides an events services. We have tested our DDS implementation with <a href="http://www.jacorb.org">Jacorb</a></li>
<li>configure and add the JACORB_HOME variable in your path.</li>
<li>unzip dds.zip in your installation directory DDS_HOME.</li>
<li>Launch "ant compile" from your installation directory</li>
</ol>
</p>
<h1 class="title" id="demonstrations">Demonstrations</h1>
<h2>Simple example</h2>
<p>
The Foo producer produces (and publishes) a random integer.<br>
Consumers display the current integer into a Swing GUI.<br>
<i>NB: The Foo example is given in the DDS specification</i><br>
<br>
Run the following commands (in seperate consoles) from the installation directory<br>
<ol>
<li>start ant NS</li>
<li>start ant server</li>
<li>start ant FooP</li>
<li>start ant FooC</li>
<li>start ant FooC</li>
</ol>
or Launch "ant foo" from your installation directory.
</p>
<h2>Temperature example</h2>
<p>
The temperature producer produces (and publishes) fictive temperature measurements following a (simple) sinusoidal law.<br>
Consumers display the current temperature into a Swing GUI.<br>
<br>
Run the following commands (in seperate consoles) from the installation directory<br>
<ol>
<li>start ant NS</li>
<li>start ant server</li>
<li>start ant TempP</li>
<li>start ant TempC</li>
<li>start ant TempC</li>
</ol>
or Launch "ant temperature" from your installation directory.
</p>
<h2>Position example</h2>
<p>
The position producer produces (and publishes) fictive positions following a (simple) track for a initial position.<br>
The consumer is a POITracker (Point-Of-Interest) which display a message when the current position is close one of the stored POIs.<br>
<b>Not implemented for the moment</b><br>
Suggestion:
The consumer could reuse the OSGi <a href="http://www-adele.imag.fr/~donsez/dev/osgi/poitracker/readme.html">POI Tracker</a> code.<br>
The producer could reuse the OSGi <a href="http://www-adele.imag.fr/~donsez/dev/osgi/gpspositionproducer/readme.html">GPS Position Producer</a> code.
</p>
<p>
<i><b>Nota Bene:</b> Under Windows, do not forget to kill the thread (java.exe)
after an excecution, else the next execution will not start.</i>
</p>
<h1 class="title" id="documentation">Documentation</h1>
<p>
<ul>
<li>A MSc (First-year Master of Science) report (<a href="DDS-report-french.doc">in french</a>)</li>
<li>A MSc defense presentation (<a href="DDS-presentation-french.ppt">in french</a>)</li>
</ul>
Some links on DDS:
<ul>
<li><a href="http://download.ociweb.com/DDS/DDS.pdf">OCI C++ open-source implementation of DDS</a> for <a href="http://www.cs.wustl.edu/~schmidt/TAO.html">TAO</a></li>
<li>Ramzi KAROUI, <a href="http://www.omg.org/news/meetings/workshops/RT_2005/03-1_Karoui.pdf">CORBA /DDS, COMPETING or COMPLEMENTING THECHNOLOGIES ?</a> at OMG Real-time and Embedded Systems Workshop, July 2005</li>
<li><a href="http://www.prismtech.com/section-item.asp?sid4=&sid3=&sid2=55&sid=18&id=324">SPLICE</a> (PrismTech/Thales commercial implementation)</li>
<li><a href="http://www.rti.com/products_ndds.html">NDDS</a> (RTI commercial implementation)</li>
</ul>
<p>
<h1 class="title" id="contact">Contact</h1>
<ul>
<li>Fouad Allaoui<a href="mailto:allfou@gmail.com?subject=DDS">allfou@gmail.com</a></li>
<li>Ahmed Ould Yehdih<a href="mailto:ahmed.yehdih@gmail.com?subject=DDS">ahmed.yehdih@gmail.com</a></li>
<li>Didier Donsez<a href="mailto:didier.donsez@imag.fr?subject=DDS">didier.donsez@imag.fr</a></li>
</ul>
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