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(MOServer, MOTableRowListener) 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 Details

    • 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.&lt;OID&gt;=&lt;limit&gt; where limit is a positive number or zero.
      See Also:

  • Constructor Details

    • MOTableSizeLimit

      public MOTableSizeLimit(int maxNumRows)

    • MOTableSizeLimit

      public MOTableSizeLimit(Properties limits)

  • Method Details

    • 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)