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An open source implementation of the Distributed Interactive Simulation (DIS) IEEE-1278 protocol
package edu.nps.moves.dis;
import java.util.*;
import java.io.*;
import edu.nps.moves.disenum.*;
import edu.nps.moves.disutil.*;
// Jaxb and Hibernate annotations generally won't work on mobile devices. XML serialization uses jaxb, and
// javax.persistence uses the JPA JSR, aka hibernate. See the Hibernate site for details.
// To generate Java code without these, and without the annotations scattered through the
// see the XMLPG java code generator, and set the boolean useHibernateAnnotations and useJaxbAnnotions
// to false, and then regenerate the code
import javax.xml.bind.*; // Used for JAXB XML serialization
import javax.xml.bind.annotation.*; // Used for XML serialization annotations (the @ stuff)
import javax.persistence.*; // Used for JPA/Hibernate SQL persistence
/**
* Section 5.2.18. Fixed Datum Record
*
* 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
*/
@Entity // Hibernate
@Inheritance(strategy=InheritanceType.JOINED) // Hibernate
public class FixedDatum extends Object implements Serializable
{
/** Primary key for hibernate, not part of the DIS standard */
private long pk_FixedDatum;
/** ID of the fixed datum */
protected long fixedDatumID;
/** Value for the fixed datum */
protected long fixedDatumValue;
/** Constructor */
public FixedDatum()
{
}
@Transient // Marked as transient to prevent hibernate from thinking this is a persistent property
public int getMarshalledSize()
{
int marshalSize = 0;
marshalSize = marshalSize + 4; // fixedDatumID
marshalSize = marshalSize + 4; // fixedDatumValue
return marshalSize;
}
/** Primary key for hibernate, not part of the DIS standard */
@Id
@GeneratedValue(strategy=GenerationType.AUTO)
public long getPk_FixedDatum()
{
return pk_FixedDatum;
}
/** Hibernate primary key, not part of the DIS standard */
public void setPk_FixedDatum(long pKeyName)
{
this.pk_FixedDatum = pKeyName;
}
public void setFixedDatumID(long pFixedDatumID)
{ fixedDatumID = pFixedDatumID;
}
@XmlAttribute // Jaxb
@Basic // Hibernate
public long getFixedDatumID()
{ return fixedDatumID;
}
public void setFixedDatumValue(long pFixedDatumValue)
{ fixedDatumValue = pFixedDatumValue;
}
@XmlAttribute // Jaxb
@Basic // Hibernate
public long getFixedDatumValue()
{ return fixedDatumValue;
}
public void marshal(DataOutputStream dos)
{
try
{
dos.writeInt( (int)fixedDatumID);
dos.writeInt( (int)fixedDatumValue);
} // end try
catch(Exception e)
{
System.out.println(e);}
} // end of marshal method
public void unmarshal(DataInputStream dis)
{
try
{
fixedDatumID = dis.readInt();
fixedDatumValue = dis.readInt();
} // 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)
{
buff.putInt( (int)fixedDatumID);
buff.putInt( (int)fixedDatumValue);
} // 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)
{
fixedDatumID = buff.getInt();
fixedDatumValue = buff.getInt();
} // 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);
}
/**
* Compare all fields that contribute to the state, ignoring
transient and static fields, for this
and the supplied object
* @param obj the object to compare to
* @return true if the objects are equal, false otherwise.
*/
public boolean equalsImpl(Object obj)
{
boolean ivarsEqual = true;
if(!(obj instanceof FixedDatum))
return false;
final FixedDatum rhs = (FixedDatum)obj;
if( ! (fixedDatumID == rhs.fixedDatumID)) ivarsEqual = false;
if( ! (fixedDatumValue == rhs.fixedDatumValue)) ivarsEqual = false;
return ivarsEqual;
}
} // end of class