org.apache.felix.examples.spellcheckclient
Class Activator

java.lang.Object
  org.apache.felix.examples.spellcheckclient.Activator

All Implemented Interfaces:

java.util.EventListener, org.osgi.framework.BundleActivator, org.osgi.framework.ServiceListener

public class Activator
extends java.lang.Object
implements org.osgi.framework.BundleActivator, org.osgi.framework.ServiceListener

Author:

Felix Project Team

Constructor Summary

Activator()

Method Summary

void	serviceChanged(org.osgi.framework.ServiceEvent event) Implements ServiceListener.serviceChanged().
void	start(org.osgi.framework.BundleContext context) Implements BundleActivator.start().
void	stop(org.osgi.framework.BundleContext context) Implements BundleActivator.stop().

Methods inherited from class java.lang.Object

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

Constructor Detail

Activator

public Activator()

Method Detail

start

public void start(org.osgi.framework.BundleContext context)
           throws java.lang.Exception

Implements BundleActivator.start(). Adds itself as a listener for service events, then queries for all available spell check services. If none are found it goes into its normal "passage checking loop" and waits for a spell check service to arrive. Once it has a spell check service it reads passages from standard input and checks their spelling using the spell check service. (NOTE: It is very bad practice to use the calling thread to perform a lengthy process like this; this is only done for the purpose of the tutorial.)

Specified by:

start in interface org.osgi.framework.BundleActivator

Parameters:

context - the framework context for the bundle.

Throws:

java.lang.Exception

stop

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

Implements BundleActivator.stop(). Does nothing since the framework will automatically unget any used services.

Specified by:

stop in interface org.osgi.framework.BundleActivator

Parameters:

context - the framework context for the bundle.

serviceChanged

public void serviceChanged(org.osgi.framework.ServiceEvent event)

Implements ServiceListener.serviceChanged(). Checks to see if the service we are using is leaving or tries to get a service if we need one.

Specified by:

serviceChanged in interface org.osgi.framework.ServiceListener

Parameters:

event - the fired service event.