[SNMP4J] How to Remove an SNMP Community String.

[Vivi Zhang]

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Hi,

I would really appreciate any help to find a way to remove an SNMP 
community string . 

I am using SNMP4j 1.9.3c, and SNMP4j agent 1.2.1d.

I have no problem to add more community string to a running SNMP agent. 
But, when I have not been successfully remove a community string.

Following is a section of code which initializes community mib and other 
mibs.

        vacmMIB = new VacmMIB(new MOServer[] { server });
        snmpTargetMIB = new SnmpTargetMIB(dispatcher);
        snmpNotificationMIB = new SnmpNotificationMIB();
      *  snmpCommunityMIB = new SnmpCommunityMIB(snmpTargetMIB);*
        this.getServer().addContext(DEFAULTCONTEXT);
        initConfigMIB();
        notificationOriginator = new NotificationOriginatorImpl(session,
                                                                vacmMIB,
                                                                
snmpv2MIB.getSysUpTime(),
                                                                
snmpTargetMIB,
                                                                
snmpNotificationMIB);
        snmpv2MIB.setNotificationOriginator(notificationOriginator);

Following is a section of code which add a community string to community MIB

        Variable[] com2sec = new Variable[] {
                new OctetString(aCommunity), SECNAMEV1V2,  
getContextEngineID(), DEFAULTCONTEXT,
                new OctetString(), // transport tag
                new Integer32(StorageType.nonVolatile), // storage type
                new Integer32(RowStatus.active) // row status
        };

        MOTableRow row = 
communityMIB.getSnmpCommunityEntry().createRow(index,
                                                                        
com2sec);
        communityMIB.getSnmpCommunityEntry().addRow(row);

To remove all community strings, I tried following code:
   MOMutableTableModel comEntryModel = 
(MOMutableTableModel)communityMIB.getSnmpCommunityEntry().getModel();
   comEntryModel .clear();

After this call, I expect all community rows are gone, and all SNMP 
queries should fail.  But this does not happen.

I also try to remove an individual community string using API call
communityMIB.getSnmpCommunityEntry().removeRow(index); where index is a 
valid OID for a community string. 

In both cases, the row is removed, but the event did not fired since 
moTableModelListeners  == null.
public synchronized MOTableRow removeRow(OID index) {
    *MOTableRow row = (MOTableRow) rows.remove(index);*
    if ((row != null) && (moTableModelListeners != null)) {
      MOTableModelEvent event =
         new MOTableModelEvent(this, MOTableModelEvent.ROW_REMOVED, row);
      fireTableModelChanged(event);
    }
    return row;
  }

After the calls, I am still able to query the snmp agent with "removed" 
community string.

Wonder if it is expected behavior.  Or I need config the 
TableModelListeners for SnmpCommunityEntry table. 

Please advise.

Vivi