org.xmlBlaster.engine.admin.extern.snmp
Class SessionTableObserver

java.lang.Object
  org.xmlBlaster.engine.admin.extern.snmp.SessionTableObserver

All Implemented Interfaces:

Observer

public class SessionTableObserver

extends java.lang.Object

implements Observer

SessionTableObserver represents the observer side of an observer pattern. When SessionTableObserver receives an update notification from SessionTableSubject, it adds or removes an entry to/from clientTable.

Version:

@VERSION@

Author:

Udo Thalmann

Field Summary

private java.util.BitSet	indexSet
private static int	MAXINDX
private jax.AgentXSession	session
private SessionEntryImpl	sessionEntryImpl
private java.util.Hashtable	sessionHashtable
private SessionTable	sessionTable
private SessionTableSubject	sessionTableSubject

Constructor Summary

SessionTableObserver(SessionTableSubject sessionTableSubject, jax.AgentXSession session)
Adds itself to the sessionTableSubject as observer.

Method Summary

void	sendTrap(jax.AgentXSession session) For each session table entry sendTrap checks trap condition cbQueueMaxEntries * cbQueueThreshold < cbQueueNumEntries.
void	update(Subject o) Adds or removes a session entry to/from the session table.

Methods inherited from class java.lang.Object

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

Field Detail

sessionTableSubject

private SessionTableSubject sessionTableSubject

session

private jax.AgentXSession session

sessionEntryImpl

private SessionEntryImpl sessionEntryImpl

sessionTable

private SessionTable sessionTable

sessionHashtable

private java.util.Hashtable sessionHashtable

indexSet

private java.util.BitSet indexSet

MAXINDX

private static final int MAXINDX

See Also:

Constant Field Values

Constructor Detail

SessionTableObserver

public SessionTableObserver(SessionTableSubject sessionTableSubject,
                            jax.AgentXSession session)

Adds itself to the sessionTableSubject as observer. Creates a new sessionTable and adds it to the agentX session. Creates a Hashtable for (session, index) entries. Creates a BitSet for available indices.

Method Detail

sendTrap

public void sendTrap(jax.AgentXSession session)

For each session table entry sendTrap checks trap condition cbQueueMaxEntries * cbQueueThreshold < cbQueueNumEntries. Sends a CbQueueThresholdOverflow trap if the condition is fulfilled.

update

public void update(Subject o)

Adds or removes a session entry to/from the session table. Updates session indexSet. Updates sessionHashtable. Updates reference counter in clientTableObserver.

Specified by:

update in interface Observer