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 <h1 class="page">OSGi Bundle-Service Diagrams</h1>
 <div id="preamble">
 <div class="sectionbody">
 <table class="tableblock frame-all grid-all stretch">
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 <col style="width: 50%;">
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 <td class="tableblock halign-left valign-top"><p class="tableblock">!bundle-services.jpg</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">align=center!</p></td>
 </tr>
 </tbody>
 </table>
 <div class="paragraph">
 <p>From Peter Kriens' blog on {link:Bundle-Service Diagrams | <a href="http://www.osgi.org/blog/2006/04/details-are-important-when-you-are.html}" class="bare">http://www.osgi.org/blog/2006/04/details-are-important-when-you-are.html}</a>: {quote} &#8230;&#8203;
 use a circle for a bundle and a triangle for a service.
 The service can be used in 3 different ways by a bundle, and this needs to be depicted:</p>
 </div>
 <div class="olist arabic">
 <ol class="arabic">
 <li>
 <p>Consumer - The bundle that gets the service is the consumer.
 The arrow from the bundle attaches to the horizontal or vertical line on a service triangle.
 An OSGi service can be consumed many times by any bundle.
 Many bundles can therefore connect to the horizontal or vertical line of the triangle.</p>
 </li>
 <li>
 <p>Implementer - The bundle that implements the service must register it.
 This is depicted by drawing a line to a corner of the triangle.
 An OSGi service can be registered many times by the same or different bundles.</p>
 </li>
 <li>
 <p>Listener - A listener bundle connects to one of the angled lines of the triangle.
 A listener is notified of registrations, modifications and unregistrations of the service.
 A service can have many listeners.</p>
 </li>
 </ol>
 </div>
 <div class="paragraph">
 <p>A service is identified by its <em>interface</em>.
 {quote}</p>
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 <h2 id="_materials"><a class="anchor" href="#_materials"></a>Materials</h2>
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 <ul>
 <li>
 <p>link:{{ refs.-bundle-services-dia.path }}[Bundle-Service Diagram Dia Diagram Editor file]</p>
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