/*_############################################################################
_##
_## SNMP4J-Agent - SnmpTagList.java
_##
_## Copyright (C) 2005-2009 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.mo.MOMutableColumn;
import org.snmp4j.agent.MOAccess;
import org.snmp4j.smi.Variable;
import org.snmp4j.smi.SMIConstants;
import org.snmp4j.smi.OctetString;
import org.snmp4j.mp.SnmpConstants;
import java.util.StringTokenizer;
import java.util.Set;
import java.util.HashSet;
import java.util.Collection;
public class SnmpTagList extends MOMutableColumn {
private static final OctetString TAG_DELIMITER = new OctetString(" \t\r\n");
public SnmpTagList(int columnID, MOAccess access,
Variable defaultValue, boolean mutableInService) {
super(columnID, SMIConstants.SYNTAX_OCTET_STRING,
access, defaultValue, mutableInService);
}
public synchronized int validate(Variable newValue, Variable oldValue) {
int status = super.validate(newValue, oldValue);
if (status == SnmpConstants.SNMP_ERROR_SUCCESS) {
return isValidTagList(newValue);
}
return status;
}
public static Set getTags(OctetString tagList) {
Collection tags = OctetString.split(tagList, TAG_DELIMITER);
HashSet list = new HashSet(tags);
return list;
}
public static int isValidTagList(Variable newValue) {
if (!(newValue instanceof OctetString)) {
return SnmpConstants.SNMP_ERROR_WRONG_TYPE;
}
OctetString os = (OctetString)newValue;
if (os.length() > 255) {
return SnmpConstants.SNMP_ERROR_WRONG_LENGTH;
}
else if (os.length() > 0) {
if (SnmpTagValue.isDelimiter(os.get(0)) ||
SnmpTagValue.isDelimiter(os.get(os.length()-1))) {
return SnmpConstants.SNMP_ERROR_BAD_VALUE;
}
boolean lastWasDelimiter = false;
for (int i = 0; i < os.length()-1; i++) {
boolean isDelimiter = SnmpTagValue.isDelimiter(os.get(i));
if (lastWasDelimiter && isDelimiter) {
return SnmpConstants.SNMP_ERROR_BAD_VALUE;
}
lastWasDelimiter = isDelimiter;
}
}
return SnmpConstants.SNMP_ERROR_SUCCESS;
}
}