org.apache.activemq.util

Class ServiceSupport

java.lang.Object

org.apache.activemq.util.ServiceSupport

All Implemented Interfaces:

Service

Direct Known Subclasses:

AbstractLocker, InMemoryJobSchedulerStore, JobSchedulerImpl, LockableServiceSupport, MessageDatabase, MQTTPacketIdGenerator, PListStoreImpl, Scheduler, TransportServerSupport, TransportSupport

public abstract class ServiceSupport
extends Object
implements Service

A helper class for working with services together with a useful base class for service implementations.

Constructor Summary

Constructors

Constructor and Description
ServiceSupport()

Method Summary

Modifier and Type	Method and Description
void	addServiceListener(ServiceListener l)
static void	dispose(Service service)
protected abstract void	doStart()
protected abstract void	doStop(ServiceStopper stopper)
boolean	isStarted()
boolean	isStopped()
boolean	isStopping()
protected void	postStop(ServiceStopper stopper) handle for various operations after stopping the service (like locking)
protected void	preStart() handle for various operations before starting the service (like locking)
void	removeServiceListener(ServiceListener l)
void	start()
void	stop()

Methods inherited from class java.lang.Object

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

Constructor Detail

ServiceSupport

public ServiceSupport()

Method Detail

dispose

public static void dispose(Service service)

start

public void start()
           throws Exception

Specified by:

start in interface Service

Throws:

Exception

stop

public void stop()
          throws Exception

Specified by:

stop in interface Service

Throws:

Exception

isStarted

public boolean isStarted()

Returns:

true if this service has been started

isStopping

public boolean isStopping()

Returns:

true if this service is in the process of closing

isStopped

public boolean isStopped()

Returns:

true if this service is closed

addServiceListener

public void addServiceListener(ServiceListener l)

removeServiceListener

public void removeServiceListener(ServiceListener l)

postStop

protected void postStop(ServiceStopper stopper)
                 throws Exception

handle for various operations after stopping the service (like locking)

Throws:

Exception

doStop

protected abstract void doStop(ServiceStopper stopper)
                        throws Exception

Throws:

Exception

preStart

protected void preStart()
                 throws Exception

handle for various operations before starting the service (like locking)

Throws:

Exception

doStart

protected abstract void doStart()
                         throws Exception

Throws:

Exception