com.buglabs.application
Class AbstractServiceTracker

java.lang.Object
  com.buglabs.application.AbstractServiceTracker

All Implemented Interfaces:

IServiceProvider, ServiceTrackerCustomizer

public abstract class AbstractServiceTracker
extends java.lang.Object
implements ServiceTrackerCustomizer, IServiceProvider

Service tracker for the BugApplication Bundle;

Constructor Summary

AbstractServiceTracker(org.osgi.framework.BundleContext context)

Method Summary

java.lang.Object	addingService(org.osgi.framework.ServiceReference reference) Used by OSGi to signal that a service was added.
protected boolean	canStart() Determines if the application can be started.
abstract void	doStart() Invoked when all services have been registered.
abstract void	doStop() Invoked when a service is unregistered.
org.osgi.framework.BundleContext	getBundleContext()
java.lang.Object	getService(java.lang.Class clazz) Helper method to retrieve a service of type class.
java.util.List	getServices() Used to retrieve a list of qualified service names.
boolean	hasStarted()
void	initServices() Implementations should add services of interest
void	modifiedService(org.osgi.framework.ServiceReference reference, java.lang.Object service) A service tracked by the ServiceTracker object has been modified.
void	removedService(org.osgi.framework.ServiceReference reference, java.lang.Object service) Used by OSGi to signal that a service was removed.
void	stop()

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractServiceTracker

public AbstractServiceTracker(org.osgi.framework.BundleContext context)

Method Detail

doStart

public abstract void doStart()

Invoked when all services have been registered.

doStop

public abstract void doStop()

Invoked when a service is unregistered.

initServices

public void initServices()

Implementations should add services of interest

addingService

public java.lang.Object addingService(org.osgi.framework.ServiceReference reference)

Used by OSGi to signal that a service was added.

Specified by:

addingService in interface ServiceTrackerCustomizer

Parameters:

reference - Reference to service being added to the ServiceTracker object.

Returns:

The service object to be tracked for the ServiceReference object or null if the ServiceReference object should not be tracked.

modifiedService

public void modifiedService(org.osgi.framework.ServiceReference reference,
                            java.lang.Object service)

Description copied from interface: ServiceTrackerCustomizer

A service tracked by the ServiceTracker object has been modified.

This method is called when a service being tracked by the ServiceTracker object has had it properties modified.

Specified by:

modifiedService in interface ServiceTrackerCustomizer

Parameters:

reference - Reference to service that has been modified.

service - The service object for the modified service.

removedService

public void removedService(org.osgi.framework.ServiceReference reference,
                           java.lang.Object service)

Used by OSGi to signal that a service was removed.

Specified by:

removedService in interface ServiceTrackerCustomizer

Parameters:

reference - Reference to service that has been removed.

service - The service object for the removed service.

canStart

protected boolean canStart()

Determines if the application can be started.

getService

public java.lang.Object getService(java.lang.Class clazz)

Helper method to retrieve a service of type class.

Specified by:

getService in interface IServiceProvider

getServices

public java.util.List getServices()

Used to retrieve a list of qualified service names. If you want your application to depend on another service, simply add the fully qualified name of the service to this list.

Returns:

a list of Strings containing the fully qualified name of each service.

getBundleContext

public org.osgi.framework.BundleContext getBundleContext()

hasStarted

public boolean hasStarted()

stop

public void stop()