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	<title>BasePatterns.org &#187; osgi</title>
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	<link>http://basepatterns.org</link>
	<description>Trends in software design</description>
	<lastBuildDate>Thu, 04 Mar 2010 03:46:39 +0000</lastBuildDate>
	
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			<item>
		<title>Whiteboard Registry</title>
		<link>http://basepatterns.org/2009/10/whiteboard-registry/</link>
		<comments>http://basepatterns.org/2009/10/whiteboard-registry/#comments</comments>
		<pubDate>Thu, 08 Oct 2009 06:59:44 +0000</pubDate>
		<dc:creator>fortuna</dc:creator>
				<category><![CDATA[Java]]></category>
		<category><![CDATA[osgi]]></category>
		<category><![CDATA[patterns]]></category>
		<category><![CDATA[registry]]></category>
		<category><![CDATA[whiteboard]]></category>

		<guid isPermaLink="false">http://basepatterns.org/?p=86</guid>
		<description><![CDATA[In OSGi using a publisher/subscriber design can be somewhat more complicated that traditional Java environments:

public class SomeBundleActivator implements BundleActivator {

  private SomeService service = ...

  private ServiceRegistration registration;

  public void start(BundleContext context) {
    registration = context.registerService(SomeService.class.getName(), service, null);
  }
  ...
}

public class AnotherBundleActivator implements BundleActivator {

  private [...]]]></description>
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		<title>OSGi Service Locator</title>
		<link>http://basepatterns.org/2009/09/osgi-service-locator/</link>
		<comments>http://basepatterns.org/2009/09/osgi-service-locator/#comments</comments>
		<pubDate>Wed, 30 Sep 2009 01:27:10 +0000</pubDate>
		<dc:creator>fortuna</dc:creator>
				<category><![CDATA[Java]]></category>
		<category><![CDATA[osgi]]></category>
		<category><![CDATA[patterns]]></category>
		<category><![CDATA[service locator]]></category>

		<guid isPermaLink="false">http://basepatterns.org/?p=74</guid>
		<description><![CDATA[The Service Locator pattern is a well-established mechanism for accessing local and remote services in a consistent manner:

public interface ServiceLocator {

    &#60;T&#62; T findService(String serviceName) throws ServiceNotAvailableException;
}

Using a structured service name interface we can improve uniformity and reduce the potential for typos:

public enum ServiceName {

  SomeService(&#34;SomeService&#34;);

  private final String filter;
 [...]]]></description>
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