uk.co.westhawk.snmp.beans
Class InterfaceIndexesBean

java.lang.Object
  |
  +--uk.co.westhawk.snmp.beans.SNMPBean
        |
        +--uk.co.westhawk.snmp.beans.SNMPRunBean
              |
              +--uk.co.westhawk.snmp.beans.InterfaceIndexesBean

All Implemented Interfaces:

java.util.Observer, java.lang.Runnable

public class InterfaceIndexesBean

extends SNMPRunBean

implements java.util.Observer

This bean collects information about the number of interfaces on a system and their index.

The number is the number of network interfaces (regardless of their current state) present on this system. The number will remain the same untill the next time the SNMP server is restarted. The interfaces may go up and down while running.

The properties in the parent classes should be set, before calling the action() method. Via a PropertyChangeEvent the application/applet will be notified.

Version:

$Revision: 1.9 $ $Date: 2002/10/10 15:13:56 $

Author:

Birgit Arkesteijn

See Also:

SNMPBean.setHost(java.lang.String), SNMPBean.setPort(int), SNMPBean.setCommunityName(java.lang.String), SNMPRunBean.setUpdateInterval(int), SNMPBean.addPropertyChangeListener(java.beans.PropertyChangeListener), SNMPBean.action(), InterfaceGetNextPdu

Fields inherited from class uk.co.westhawk.snmp.beans.SNMPRunBean

interval, me, running

Fields inherited from class uk.co.westhawk.snmp.beans.SNMPBean

community, context, host, message, port, propertyChangeListener

Constructor Summary

InterfaceIndexesBean()
The default constructor.

InterfaceIndexesBean(java.lang.String h, int p)
The constructor that will set the host and the port no.

Method Summary

void	action() This method starts the action of the bean.
int	getInterfaceCount() Returns the number of current interfaces.
java.util.Enumeration	getInterfaceIndexes() Returns the indexes (as Strings) of the current interfaces (the list of ifIndex).
java.util.Date	getLastUpdateDate() Returns the date of the moment when this bean was last updated.
void	run() Implements the running of the bean.
void	update(java.util.Observable obs, java.lang.Object ov) This method is called when the Pdu response is received.

Methods inherited from class uk.co.westhawk.snmp.beans.SNMPRunBean

getUpdateInterval, isRunning, setRunning, setUpdateInterval, setUpdateInterval

Methods inherited from class uk.co.westhawk.snmp.beans.SNMPBean

addPropertyChangeListener, firePropertyChange, getCommunityName, getHost, getMessage, getPort, isHostPortReachable, removePropertyChangeListener, setCommunityName, setHost, setMessage, setPort, setPort

Methods inherited from class java.lang.Object

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

Constructor Detail

InterfaceIndexesBean

public InterfaceIndexesBean()

The default constructor.

InterfaceIndexesBean

public InterfaceIndexesBean(java.lang.String h,
                            int p)

The constructor that will set the host and the port no.

Parameters:

h - the hostname

p - the port no

See Also:

SNMPBean.setHost(java.lang.String), SNMPBean.setPort(int)

Method Detail

getLastUpdateDate

public java.util.Date getLastUpdateDate()

Returns the date of the moment when this bean was last updated. This might be null when the first time the update was not finished.

Returns:

the last update date

getInterfaceIndexes

public java.util.Enumeration getInterfaceIndexes()

Returns the indexes (as Strings) of the current interfaces (the list of ifIndex).

getInterfaceCount

public int getInterfaceCount()

Returns the number of current interfaces.

action

public void action()

This method starts the action of the bean. It will initialises all variables before starting.

Overrides:

action in class SNMPBean

run

public void run()

Implements the running of the bean. It will send the Pdu, if the previous one is not still in flight.

Overrides:

run in class SNMPRunBean

See Also:

SNMPRunBean.isRunning()

update

public void update(java.util.Observable obs,
                   java.lang.Object ov)

This method is called when the Pdu response is received. When all answers are received it will fire the property change event. The answers are stored in a hashtable, this is done because the speed can only be calculated with the previous answer.

Specified by:

update in interface java.util.Observer

See Also:

SNMPBean.addPropertyChangeListener(java.beans.PropertyChangeListener)