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SNMP-Agent API for Java
There is a newer version: 3.8.1
/*_############################################################################
  _## 
  _##  SNMP4J-Agent 3 - RowPointer.java  
  _## 
  _##  Copyright (C) 2005-2021  Frank Fock (SNMP4J.org)
  _##  
  _##  Licensed under the Apache License, Version 2.0 (the "License");
  _##  you may not use this file except in compliance with the License.
  _##  You may obtain a copy of the License at
  _##  
  _##      http://www.apache.org/licenses/LICENSE-2.0
  _##  
  _##  Unless required by applicable law or agreed to in writing, software
  _##  distributed under the License is distributed on an "AS IS" BASIS,
  _##  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  _##  See the License for the specific language governing permissions and
  _##  limitations under the License.
  _##  
  _##########################################################################*/


package org.snmp4j.agent.mo.snmp;

import org.snmp4j.agent.*;
import org.snmp4j.agent.mo.*;
import org.snmp4j.agent.request.*;
import org.snmp4j.smi.*;
import org.snmp4j.mp.SnmpConstants;

public class RowPointer extends MOMutableColumn {

    @SuppressWarnings("rawtypes")
    private MOTable targetTable;

    @SuppressWarnings("rawtypes")
    public RowPointer(int columnID, MOAccess access, OID defaultValue, boolean mutableInService, MOTable targetTable) {
        super(columnID, SMIConstants.SYNTAX_OBJECT_IDENTIFIER,
                access, defaultValue, mutableInService);
        this.targetTable = targetTable;
    }

    public RowPointer(int columnID, MOAccess access, OID defaultValue, boolean mutableInService) {
        super(columnID, SMIConstants.SYNTAX_OBJECT_IDENTIFIER,
                access, defaultValue, mutableInService);
    }

    protected void illegalRowPointer(SubRequest subRequest) {
        subRequest.getStatus().
                setErrorStatus(SnmpConstants.SNMP_ERROR_INCONSISTENT_NAME);
    }

    public void prepare(SubRequest subRequest, MOTableRow row,
                        MOTableRow preparedChanges, int column) {
        super.prepare(subRequest, row, null, column);
        if (!subRequest.hasError()) {
            OID rowPointer = (OID) subRequest.getVariableBinding().getVariable();
            MOTableCellInfo cell = targetTable.getCellInfo(rowPointer);
            if ((cell == null) ||
                    (cell.getIndex() == null) || (cell.getColumn() < 0)) {
                illegalRowPointer(subRequest);
            }
        }
    }

    @SuppressWarnings("rawtypes")
    public MOTable getTargetTable() {
        return targetTable;
    }

    @SuppressWarnings("rawtypes")
    public void setTargetTable(MOTable targetTable) {
        this.targetTable = targetTable;
    }

}