PaP
Class SubscribeRequestServer

java.lang.Object
  |
  +--PaP.SubscribeRequestServer

All Implemented Interfaces:

java.awt.event.ActionListener, java.util.EventListener, java.io.Serializable

public class SubscribeRequestServer

extends java.lang.Object

implements java.awt.event.ActionListener, java.io.Serializable

Server for individual subscription requests from clients. The server receives event registrations, checks whether or not they shall be reported, and keep registrations to be reported until the report is sent. Reports are sent only when registrations exists, but it is the clien that specifies when or how often the reports shall be sent.

See Also:

Serialized Form

Field Summary

private BaseFrame	bf Debug trace window (only temporarly)
private ActorContext	context The context that defines who shall be the sender of the reports
private int	next The number of registrations in the store
private SubscribeRequest	req The received subscribe request specification to be handled by this server
private java.lang.String[]	store The store to keep registrations until they are reported
private javax.swing.Timer	timer Timer used to measure time until next report

Constructor Summary

SubscribeRequestServer(SubscribeRequest sr, ActorContext ctx, BaseFrame frame)
Initiate the subscribe server instance.

Method Summary

void	actionPerformed(java.awt.event.ActionEvent e) Reported timeout from the initiated timer
private void	addEvent(int et, GAI sc, java.lang.String at) Store an event evaluated to be stored.
boolean	cancelSubscribe() Cancel this subscription.
private void	initiateTimer() Check if timer needs to be initiated and eventually initiate it
private boolean	inSetGAI(GAI[] set, GAI value) Check if specified value satisfies requirement to be stored.
private boolean	inSetInt(int[] set, int value) Check if specified value satisfies requirement to be stored.
private boolean	inSetString(java.lang.String[] set, java.lang.String value) Check if specified value satisfies requirement to be stored.
void	registerEvent(int et, GAI sc, java.lang.String at) Report of an event.
private void	reportEvents() Report to subscription client registered event
private void	terminateTimer() Terminate and discard eventually initiated timer

Methods inherited from class java.lang.Object

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

Field Detail

req

private SubscribeRequest req

The received subscribe request specification to be handled by this server

store

private java.lang.String[] store

The store to keep registrations until they are reported

next

private int next

The number of registrations in the store

timer

private javax.swing.Timer timer

Timer used to measure time until next report

context

private ActorContext context

The context that defines who shall be the sender of the reports

bf

private BaseFrame bf

Debug trace window (only temporarly)

Constructor Detail

SubscribeRequestServer

public SubscribeRequestServer(SubscribeRequest sr,
                              ActorContext ctx,
                              BaseFrame frame)

Initiate the subscribe server instance.

Parameters:

sr - The specification of the subscribe request.

ctx - The context to be used to specify the sender of the subscribe reports.

frame - Debugging trace window (temporarly)

Method Detail

cancelSubscribe

public boolean cancelSubscribe()

Cancel this subscription. Deallocates and terminates the instance.

registerEvent

public void registerEvent(int et,
                          GAI sc,
                          java.lang.String at)

Report of an event. The event is checked and eventually stored.

Parameters:

et - Event type

sc - Address of the entity the event concerns

at - Application specific information

addEvent

private void addEvent(int et,
                      GAI sc,
                      java.lang.String at)

Store an event evaluated to be stored.

Parameters:

et - Event type

sc - Address of the entity the event concerns

at - Application specific information

actionPerformed

public void actionPerformed(java.awt.event.ActionEvent e)

Reported timeout from the initiated timer

Specified by:

actionPerformed in interface java.awt.event.ActionListener

initiateTimer

private void initiateTimer()

Check if timer needs to be initiated and eventually initiate it

terminateTimer

private void terminateTimer()

Terminate and discard eventually initiated timer

reportEvents

private void reportEvents()

Report to subscription client registered event

inSetInt

private boolean inSetInt(int[] set,
                         int value)

Check if specified value satisfies requirement to be stored.

Parameters:

set - The set of values to search in, null means any

value - The value to search in 'set'.

Returns:

true means satisfied, false not satisfied.

inSetGAI

private boolean inSetGAI(GAI[] set,
                         GAI value)

Check if specified value satisfies requirement to be stored.

Parameters:

set - The set of values to search in, null means any

value - The value to search in 'set'.

Returns:

true means satisfied, false not satisfied.

inSetString

private boolean inSetString(java.lang.String[] set,
                            java.lang.String value)

Check if specified value satisfies requirement to be stored.

Parameters:

set - The set of values to search in, null means any

value - The value to search in 'set'.

Returns:

true means satisfied, false not satisfied.