org.snmp4j.agent.mo.util

Class MOTableSizeLimit<R extends MOTableRow>

java.lang.Object

org.snmp4j.agent.mo.util.MOTableSizeLimit<R>

All Implemented Interfaces:

EventListener, MOTableRowListener<R>

Direct Known Subclasses:

LogMOTableSizeLimit

public class MOTableSizeLimit<R extends MOTableRow>
extends Object
implements MOTableRowListener<R>

This class implements a size limit on the number of rows in a table. If the limit is reached or exceeded, no more additional rows can be added by SNMP means.

Use the DefaultMOServer.registerTableRowListener(org.snmp4j.agent.MOServer, org.snmp4j.agent.mo.MOTableRowListener<R>) method to register this table row listener for all tables in your agent, in order to be able to control the table sizes of all the tables in a server.

Since:

1.1.5

Version:

1.4

Author:

Frank Fock

Field Summary

Fields

Modifier and Type	Field and Description
static String	PROPERTY_PREFIX The property prefix each size limit definition has to start with.

Constructor Summary

Constructors

Constructor and Description
MOTableSizeLimit(int maxNumRows)
MOTableSizeLimit(Properties limits)

Method Summary

Methods

Modifier and Type	Method and Description
SortedMap<org.snmp4j.smi.OID,Integer>	getLimits()
int	getMaxNumRows()
protected boolean	removeEldest(MOTableRowEvent<R> triggeringEvent, int numRows) Remove try to remove a given number of eldest rows of the table referred to in the triggering event object.
void	rowChanged(MOTableRowEvent<R> event) A column or a complete row is changed/has been changed.
void	setLimits(Properties limits)
void	setMaxNumRows(int maxNumRows)

Methods inherited from class java.lang.Object

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

Field Detail

PROPERTY_PREFIX

public static final String PROPERTY_PREFIX

The property prefix each size limit definition has to start with. The OID subtree for which the definition is effective is then appended as follows:

 snmp4j.MOTableSizeLimit.=
 

where limit is a positive number or zero.

See Also:

Constant Field Values

Constructor Detail

MOTableSizeLimit

public MOTableSizeLimit(int maxNumRows)

MOTableSizeLimit

public MOTableSizeLimit(Properties limits)

Method Detail

rowChanged

public void rowChanged(MOTableRowEvent<R> event)

A column or a complete row is changed/has been changed.

Specified by:

rowChanged in interface MOTableRowListener<R extends MOTableRow>

Parameters:

event - a MOTableRowEvent describing the event. To veto the event the MOTableRowEvent.setVetoStatus(int) and optionally also the MOTableRowEvent.setVetoColumn(int) can be called.

removeEldest

protected boolean removeEldest(MOTableRowEvent<R> triggeringEvent,
                   int numRows)

Remove try to remove a given number of eldest rows of the table referred to in the triggering event object.

Parameters:

triggeringEvent - the MOTableRowEvent object that describes the table with exceeding row limit.

numRows - the number of rows to remove (if possible).

Returns:

true if one or more rows could be removed and false if the causing event should be denied/rejected. The default implementation returns false always.

setMaxNumRows

public void setMaxNumRows(int maxNumRows)

getMaxNumRows

public int getMaxNumRows()

getLimits

public SortedMap<org.snmp4j.smi.OID,Integer> getLimits()

setLimits

public void setLimits(Properties limits)