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SNMP-Agent API for Java
There is a newer version: 3.8.1
/*_############################################################################
  _## 
  _##  SNMP4J-Agent 3 - TimeStampTC.java  
  _## 
  _##  Copyright (C) 2005-2018  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.tc;

import org.snmp4j.agent.*;
import org.snmp4j.agent.mo.*;
import org.snmp4j.smi.*;
import org.snmp4j.agent.mo.snmp.TimeStamp;
import org.snmp4j.agent.mo.snmp.TimeStampScalar;
import org.snmp4j.agent.mo.snmp.SNMPv2MIB;
import org.snmp4j.agent.mo.snmp.SNMPv2TC;

public class TimeStampTC implements TextualConvention {

    private OctetString defaultContext;

    public TimeStampTC() {
    }

    /**
     * Creates a {@code TimestampTC} that uses sysUpTime from the specified context.
     *
     * @param defaultContext
     *         the context to be used to provide the sysUpTime for time stamp TCs created by this factory.
     *
     * @since 1.1
     */
    public TimeStampTC(OctetString defaultContext) {
        this.defaultContext = defaultContext;
    }

    public MOColumn createColumn(int columnID, int syntax, MOAccess access, TimeTicks defaultValue,
                                            boolean mutableInService) {
        return new TimeStamp(columnID, access, SNMPv2MIB.getSysUpTime(defaultContext));
    }

    public MOScalar createScalar(OID oid, MOAccess access, TimeTicks value) {
        return new TimeStampScalar(oid, access, ((value == null) ? createInitialValue() : value),
                SNMPv2MIB.getSysUpTime(defaultContext));
    }

    public String getModuleName() {
        return SNMPv2TC.MODULE_NAME;
    }

    public String getName() {
        return SNMPv2TC.TIMESTAMP;
    }

    public TimeTicks createInitialValue() {
        return new TimeTicks(0);
    }
}