org.jclouds.osgi
Class MetadataBundleListener

java.lang.Object
  org.jclouds.osgi.MetadataBundleListener

All Implemented Interfaces:

EventListener, org.osgi.framework.BundleListener

public class MetadataBundleListener
extends Object
implements org.osgi.framework.BundleListener

A BundleListener that listens for BundleEvent and searches for ProviderMetadata and ApiMetadata in newly installed Bundles. This is used as a workaround for OSGi environments where the ServiceLoader cannot cross bundle boundaries.

Constructor Summary

MetadataBundleListener()

Method Summary

void	bundleChanged(org.osgi.framework.BundleEvent event)
ApiMetadata	getApiMetadata(org.osgi.framework.Bundle bundle) Creates an instance of ApiMetadata from the Bundle.
String	getApiMetadataClassName(org.osgi.framework.Bundle bundle) Retrieves the ProviderMetadata class name for the bundle if it exists.
String	getMetadataClassName(org.osgi.framework.Bundle bundle, String pathToMetadata)
ProviderMetadata	getProviderMetadata(org.osgi.framework.Bundle bundle) Creates an instance of ProviderMetadata from the Bundle.
String	getProviderMetadataClassName(org.osgi.framework.Bundle bundle) Retrieves the ProviderMetadata class name for the bundle if it exists.
void	start(org.osgi.framework.BundleContext bundleContext)
void	stop(org.osgi.framework.BundleContext bundleContext)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MetadataBundleListener

public MetadataBundleListener()

Method Detail

start

public void start(org.osgi.framework.BundleContext bundleContext)

stop

public void stop(org.osgi.framework.BundleContext bundleContext)

bundleChanged

public void bundleChanged(org.osgi.framework.BundleEvent event)

Specified by:

bundleChanged in interface org.osgi.framework.BundleListener

getProviderMetadata

public ProviderMetadata getProviderMetadata(org.osgi.framework.Bundle bundle)

Creates an instance of ProviderMetadata from the Bundle.

Parameters:

bundle -

Returns:

getApiMetadata

public ApiMetadata getApiMetadata(org.osgi.framework.Bundle bundle)

Creates an instance of ApiMetadata from the Bundle.

Parameters:

bundle -

Returns:

getMetadataClassName

public String getMetadataClassName(org.osgi.framework.Bundle bundle,
                                   String pathToMetadata)

getProviderMetadataClassName

public String getProviderMetadataClassName(org.osgi.framework.Bundle bundle)

Retrieves the ProviderMetadata class name for the bundle if it exists.

Parameters:

bundle -

Returns:

getApiMetadataClassName

public String getApiMetadataClassName(org.osgi.framework.Bundle bundle)

Retrieves the ProviderMetadata class name for the bundle if it exists.

Parameters:

bundle -

Returns: