org.snmp4j.agent.mo.snmp.smi.ConstraintsImpl Maven / Gradle / Ivy
/*_############################################################################
_##
_## SNMP4J-Agent - ConstraintsImpl.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.smi;
import java.util.ArrayList;
import java.util.List;
import java.util.*;
import org.snmp4j.smi.Variable;
import org.snmp4j.PDU;
import org.snmp4j.smi.OctetString;
import org.snmp4j.smi.UnsignedInteger32;
import org.snmp4j.smi.Integer32;
/**
* The ConstraintsImpl class represents a collection of constraints
* that are applied to a SNMP value in the order they have been added to this
* constraints collection.
*
* @author Frank Fock
* @version 1.0
*/
public class ConstraintsImpl implements Constraints {
private List constraints = new ArrayList();
/**
* Creates a new constraints collection.
*/
public ConstraintsImpl() {
}
public void add(Constraint sizeConstraint) {
constraints.add(sizeConstraint);
}
public void remove(Constraint sizeContraint) {
constraints.remove(sizeContraint);
}
public Constraint[] getConstraints() {
return (Constraint[])
constraints.toArray(new Constraint[constraints.size()]);
}
public boolean isValidSize(long size) {
if (constraints.size() > 0) {
for (Iterator it = constraints.iterator(); it.hasNext(); ) {
Constraint sc = (Constraint) it.next();
if ((size >= sc.getLowerBound()) && (size <= sc.getUpperBound())) {
return true;
}
}
return false;
}
else {
return true;
}
}
public int validate(Variable variable) {
if (variable instanceof OctetString) {
if (!isValidSize(((OctetString)variable).length())) {
return PDU.wrongLength;
}
}
else if (variable instanceof Integer32) {
Integer32 i = (Integer32)variable;
if (!isValidSize(i.getValue())) {
return PDU.wrongValue;
}
}
else if (variable instanceof UnsignedInteger32) {
UnsignedInteger32 ui = (UnsignedInteger32)variable;
if (!isValidSize(ui.getValue())) {
return PDU.wrongValue;
}
}
return PDU.noError;
}
}