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An open source implementation of the Distributed Interactive Simulation (DIS) IEEE-1278 protocol
package edu.nps.moves.dismobile;
import java.util.*;
import java.io.*;
import edu.nps.moves.disenum.*;
import edu.nps.moves.disutil.*;
/**
* Section 5.3.7.1. Information about active electronic warfare (EW) emissions and active EW countermeasures shall be communicated using an Electromagnetic Emission PDU. COMPLETE (I think)
*
* Copyright (c) 2008-2010, MOVES Institute, Naval Postgraduate School. All rights reserved.
* This work is licensed under the BSD open source license, available at https://www.movesinstitute.org/licenses/bsd.html
*
* @author DMcG
*/
public class ElectronicEmissionsPdu extends DistributedEmissionsFamilyPdu implements Serializable
{
/** ID of the entity emitting */
protected EntityID emittingEntityID = new EntityID();
/** ID of event */
protected EventID eventID = new EventID();
/** This field shall be used to indicate if the data in the PDU represents a state update or just data that has changed since issuance of the last Electromagnetic Emission PDU [relative to the identified entity and emission system(s)]. */
protected short stateUpdateIndicator;
/** This field shall specify the number of emission systems being described in the current PDU. */
protected short numberOfSystems;
/** padding */
protected int paddingForEmissionsPdu;
/** Electronic emmissions systems */
protected List< ElectronicEmissionSystemData> systems = new ArrayList();
/** Constructor */
public ElectronicEmissionsPdu()
{
setPduType( (short)23 );
setPaddingForEmissionsPdu( (int)0 );
}
public int getMarshalledSize()
{
int marshalSize = 0;
marshalSize = super.getMarshalledSize();
marshalSize = marshalSize + emittingEntityID.getMarshalledSize(); // emittingEntityID
marshalSize = marshalSize + eventID.getMarshalledSize(); // eventID
marshalSize = marshalSize + 1; // stateUpdateIndicator
marshalSize = marshalSize + 1; // numberOfSystems
marshalSize = marshalSize + 2; // paddingForEmissionsPdu
for(int idx=0; idx < systems.size(); idx++)
{
ElectronicEmissionSystemData listElement = systems.get(idx);
marshalSize = marshalSize + listElement.getMarshalledSize();
}
return marshalSize;
}
public void setEmittingEntityID(EntityID pEmittingEntityID)
{ emittingEntityID = pEmittingEntityID;
}
public EntityID getEmittingEntityID()
{ return emittingEntityID;
}
public void setEventID(EventID pEventID)
{ eventID = pEventID;
}
public EventID getEventID()
{ return eventID;
}
public void setStateUpdateIndicator(short pStateUpdateIndicator)
{ stateUpdateIndicator = pStateUpdateIndicator;
}
public short getStateUpdateIndicator()
{ return stateUpdateIndicator;
}
public short getNumberOfSystems()
{ return (short)systems.size();
}
/** Note that setting this value will not change the marshalled value. The list whose length this describes is used for that purpose.
* The getnumberOfSystems method will also be based on the actual list length rather than this value.
* The method is simply here for java bean completeness.
*/
public void setNumberOfSystems(short pNumberOfSystems)
{ numberOfSystems = pNumberOfSystems;
}
public void setPaddingForEmissionsPdu(int pPaddingForEmissionsPdu)
{ paddingForEmissionsPdu = pPaddingForEmissionsPdu;
}
public int getPaddingForEmissionsPdu()
{ return paddingForEmissionsPdu;
}
public void setSystems(List pSystems)
{ systems = pSystems;
}
public List getSystems()
{ return systems; }
public void marshal(DataOutputStream dos)
{
super.marshal(dos);
try
{
emittingEntityID.marshal(dos);
eventID.marshal(dos);
dos.writeByte( (byte)stateUpdateIndicator);
dos.writeByte( (byte)systems.size());
dos.writeShort( (short)paddingForEmissionsPdu);
for(int idx = 0; idx < systems.size(); idx++)
{
ElectronicEmissionSystemData aElectronicEmissionSystemData = systems.get(idx);
aElectronicEmissionSystemData.marshal(dos);
} // end of list marshalling
} // end try
catch(Exception e)
{
System.out.println(e);}
} // end of marshal method
public void unmarshal(DataInputStream dis)
{
super.unmarshal(dis);
try
{
emittingEntityID.unmarshal(dis);
eventID.unmarshal(dis);
stateUpdateIndicator = (short)dis.readUnsignedByte();
numberOfSystems = (short)dis.readUnsignedByte();
paddingForEmissionsPdu = (int)dis.readUnsignedShort();
for(int idx = 0; idx < numberOfSystems; idx++)
{
ElectronicEmissionSystemData anX = new ElectronicEmissionSystemData();
anX.unmarshal(dis);
systems.add(anX);
}
} // end try
catch(Exception e)
{
System.out.println(e);
}
} // end of unmarshal method
/**
* Packs a Pdu into the ByteBuffer.
* @throws java.nio.BufferOverflowException if buff is too small
* @throws java.nio.ReadOnlyBufferException if buff is read only
* @see java.nio.ByteBuffer
* @param buff The ByteBuffer at the position to begin writing
* @since ??
*/
public void marshal(java.nio.ByteBuffer buff)
{
super.marshal(buff);
emittingEntityID.marshal(buff);
eventID.marshal(buff);
buff.put( (byte)stateUpdateIndicator);
buff.put( (byte)systems.size());
buff.putShort( (short)paddingForEmissionsPdu);
for(int idx = 0; idx < systems.size(); idx++)
{
ElectronicEmissionSystemData aElectronicEmissionSystemData = (ElectronicEmissionSystemData)systems.get(idx);
aElectronicEmissionSystemData.marshal(buff);
} // end of list marshalling
} // end of marshal method
/**
* Unpacks a Pdu from the underlying data.
* @throws java.nio.BufferUnderflowException if buff is too small
* @see java.nio.ByteBuffer
* @param buff The ByteBuffer at the position to begin reading
* @since ??
*/
public void unmarshal(java.nio.ByteBuffer buff)
{
super.unmarshal(buff);
emittingEntityID.unmarshal(buff);
eventID.unmarshal(buff);
stateUpdateIndicator = (short)(buff.get() & 0xFF);
numberOfSystems = (short)(buff.get() & 0xFF);
paddingForEmissionsPdu = (int)(buff.getShort() & 0xFFFF);
for(int idx = 0; idx < numberOfSystems; idx++)
{
ElectronicEmissionSystemData anX = new ElectronicEmissionSystemData();
anX.unmarshal(buff);
systems.add(anX);
}
} // end of unmarshal method
/*
* The equals method doesn't always work--mostly it works only on classes that consist only of primitives. Be careful.
*/
@Override
public boolean equals(Object obj)
{
if(this == obj){
return true;
}
if(obj == null){
return false;
}
if(getClass() != obj.getClass())
return false;
return equalsImpl(obj);
}
@Override
public boolean equalsImpl(Object obj)
{
boolean ivarsEqual = true;
if(!(obj instanceof ElectronicEmissionsPdu))
return false;
final ElectronicEmissionsPdu rhs = (ElectronicEmissionsPdu)obj;
if( ! (emittingEntityID.equals( rhs.emittingEntityID) )) ivarsEqual = false;
if( ! (eventID.equals( rhs.eventID) )) ivarsEqual = false;
if( ! (stateUpdateIndicator == rhs.stateUpdateIndicator)) ivarsEqual = false;
if( ! (numberOfSystems == rhs.numberOfSystems)) ivarsEqual = false;
if( ! (paddingForEmissionsPdu == rhs.paddingForEmissionsPdu)) ivarsEqual = false;
for(int idx = 0; idx < systems.size(); idx++)
{
if( ! ( systems.get(idx).equals(rhs.systems.get(idx)))) ivarsEqual = false;
}
return ivarsEqual && super.equalsImpl(rhs);
}
} // end of class