net.dpml.station.server
Class RemoteApplication

java.lang.Object
  java.rmi.server.RemoteObject
      java.rmi.server.RemoteServer
          java.rmi.server.UnicastRemoteObject
              net.dpml.station.server.UnicastEventSource
                  net.dpml.station.server.RemoteApplication

All Implemented Interfaces:

Serializable, Remote, Application, Callback

public class RemoteApplication
extends UnicastEventSource
implements Callback, Application

The RemoteApplication is the default implementation of a remotely accessible Aplication.

Version:

1.0.5

Author:

Digital Product Meta Library

See Also:

Serialized Form

Field Summary

Fields inherited from class java.rmi.server.RemoteObject

ref

Fields inherited from interface net.dpml.station.Application

DEFAULT_SHUTDOWN_TIMEOUT, DEFAULT_STARTUP_TIMEOUT

Constructor Summary

RemoteApplication(Logger logger, ApplicationDescriptor descriptor, String id, int port)
Creation of an application instance.

Method Summary

void	addApplicationListener(ApplicationListener listener) Add an application listener.
void	error(Throwable throwable, boolean fatal) Method invoked by a process to signal that the process has encounter an error condition.
ApplicationDescriptor	getApplicationDescriptor() Return the profile associated with this application
String	getID() Return the application id.
PID	getPID() Return the process identifier of the process within which the application is running.
ProcessState	getProcessState() Return the current deployment state of the process.
Provider	getProvider() Return the component instance handler.
void	info(String message) Method invoked by a process to send a arbitary message to the the callback handler.
protected void	processEvent(EventObject eventObject) Internal event handler.
void	removeApplicationListener(ApplicationListener listener) Remove an application listener.
void	restart() Restart the application.
void	start() Start the application.
void	started(PID pid, Component handler) Method invoked by a process to signal that the process has commenced startup.
void	stop() Stop the application.
void	stopped() Method invoked by a process to signal its imminent termination.

Methods inherited from class net.dpml.station.server.UnicastEventSource

addListener, enqueueEvent, getLogger, listeners, removeListener

Methods inherited from class java.rmi.server.UnicastRemoteObject

clone, exportObject, exportObject, exportObject, unexportObject

Methods inherited from class java.rmi.server.RemoteServer

getClientHost, getLog, setLog

Methods inherited from class java.rmi.server.RemoteObject

equals, getRef, hashCode, toString, toStub

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

RemoteApplication

public RemoteApplication(Logger logger,
                         ApplicationDescriptor descriptor,
                         String id,
                         int port)
                  throws RemoteException

Creation of an application instance.

Parameters:

logger - the assigned logging channel

descriptor - the application descriptor

id - the application key

port - the rmi registry port on which the station is registered

Throws:

RemoteException - if a remote exception occurs

Method Detail

started

public void started(PID pid,
                    Component handler)
             throws ApplicationException

Method invoked by a process to signal that the process has commenced startup.

Specified by:

started in interface Callback

Parameters:

pid - the process identifier

handler - the component handler

Throws:

ApplicationException - if an application exception occurs

error

public void error(Throwable throwable,
                  boolean fatal)

Method invoked by a process to signal that the process has encounter an error condition.

Specified by:

error in interface Callback

Parameters:

throwable - the error condition

fatal - if true the process is requesting termination

info

public void info(String message)

Method invoked by a process to send a arbitary message to the the callback handler.

Specified by:

info in interface Callback

Parameters:

message - the message

stopped

public void stopped()

Method invoked by a process to signal its imminent termination.

Specified by:

stopped in interface Callback

getPID

public PID getPID()

Return the process identifier of the process within which the application is running. If the application is not running a null value is returned.

Specified by:

getPID in interface Application

Returns:

the pid

getID

public String getID()

Return the application id.

Specified by:

getID in interface Application

Returns:

the id

getApplicationDescriptor

public ApplicationDescriptor getApplicationDescriptor()

Return the profile associated with this application

Specified by:

getApplicationDescriptor in interface Application

Returns:

the application profile

getProcessState

public ProcessState getProcessState()

Return the current deployment state of the process.

Specified by:

getProcessState in interface Application

Returns:

the current process state

start

public void start()
           throws ApplicationException

Start the application.

Specified by:

start in interface Application

Throws:

ApplicationException - if an application error occurs

stop

public void stop()
          throws RemoteException

Stop the application.

Specified by:

stop in interface Application

Throws:

RemoteException - if a rmote error occurs

restart

public void restart()
             throws RemoteException

Restart the application.

Specified by:

restart in interface Application

Throws:

RemoteException - if a rmote error occurs

getProvider

public Provider getProvider()

Return the component instance handler.

Specified by:

getProvider in interface Application

Returns:

the instance handler (possibly null)

addApplicationListener

public void addApplicationListener(ApplicationListener listener)

Add an application listener.

Specified by:

addApplicationListener in interface Application

Parameters:

listener - the listener to add

removeApplicationListener

public void removeApplicationListener(ApplicationListener listener)

Remove an application listener.

Specified by:

removeApplicationListener in interface Application

Parameters:

listener - the listener to remove

processEvent

protected void processEvent(EventObject eventObject)

Internal event handler.

Specified by:

processEvent in class UnicastEventSource

Parameters:

eventObject - the event