com.mobius.software.mqttsn.parser.avps.SNQoS Maven / Gradle / Ivy
package com.mobius.software.mqttsn.parser.avps;
/**
* Mobius Software LTD
* Copyright 2015-2016, Mobius Software LTD
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
import java.util.HashMap;
import java.util.Map;
import com.mobius.software.mqttsn.parser.exceptions.MalformedMessageException;
public enum SNQoS
{
AT_MOST_ONCE((byte) 0), AT_LEAST_ONCE((byte) 1), EXACTLY_ONCE((byte) 2), LEVEL_ONE((byte) 3);
private byte value;
private static final Map intToTypeMap = new HashMap();
private static final Map strToTypeMap = new HashMap();
static
{
for (SNQoS type : SNQoS.values())
{
intToTypeMap.put((int) type.value, type);
strToTypeMap.put(type.name(), type);
}
}
public int getValue()
{
return value;
}
private SNQoS(final byte leg)
{
value = leg;
}
public static SNQoS valueOf(int type) throws MalformedMessageException
{
return intToTypeMap.get(type);
}
public static SNQoS calculate(final SNQoS subscriberQos, final SNQoS publisherQos)
{
if (subscriberQos.getValue() == publisherQos.getValue())
return subscriberQos;
if (subscriberQos.getValue() > publisherQos.getValue())
return publisherQos;
else
return subscriberQos;
}
}