edu.nps.moves.dis7.SilentEntitySystem Maven / Gradle / Ivy

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package edu.nps.moves.dis7;

import java.util.*;
import java.io.*;

/**
 * information abou an enitity not producing espdus. Section 6.2.79
 *
 * Copyright (c) 2008-2016, 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 SilentEntitySystem extends Object implements Serializable {

    /**
     * number of the type specified by the entity type field
     */
    protected int numberOfEntities;

    /**
     * number of entity appearance records that follow
     */
    protected int numberOfAppearanceRecords;

    /**
     * Entity type
     */
    protected EntityType entityType = new EntityType();

    /**
     * Variable length list of appearance records
     */
    protected List< FourByteChunk> appearanceRecordList = new ArrayList< FourByteChunk>();

    /**
     * Constructor
     */
    public SilentEntitySystem() {
    }

    public int getMarshalledSize() {
        int marshalSize = 0;

        marshalSize = marshalSize + 2;  // numberOfEntities
        marshalSize = marshalSize + 2;  // numberOfAppearanceRecords
        marshalSize = marshalSize + entityType.getMarshalledSize();  // entityType
        for (int idx = 0; idx < appearanceRecordList.size(); idx++) {
            FourByteChunk listElement = appearanceRecordList.get(idx);
            marshalSize = marshalSize + listElement.getMarshalledSize();
        }

        return marshalSize;
    }

    public void setNumberOfEntities(int pNumberOfEntities) {
        numberOfEntities = pNumberOfEntities;
    }

    public int getNumberOfEntities() {
        return numberOfEntities;
    }

    public int getNumberOfAppearanceRecords() {
        return (int) appearanceRecordList.size();
    }

    /**
     * Note that setting this value will not change the marshalled value. The
     * list whose length this describes is used for that purpose. The
     * getnumberOfAppearanceRecords 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 setNumberOfAppearanceRecords(int pNumberOfAppearanceRecords) {
        numberOfAppearanceRecords = pNumberOfAppearanceRecords;
    }

    public void setEntityType(EntityType pEntityType) {
        entityType = pEntityType;
    }

    public EntityType getEntityType() {
        return entityType;
    }

    public void setAppearanceRecordList(List pAppearanceRecordList) {
        appearanceRecordList = pAppearanceRecordList;
    }

    public List getAppearanceRecordList() {
        return appearanceRecordList;
    }

    public void marshal(DataOutputStream dos) {
        try {
            dos.writeShort((short) numberOfEntities);
            dos.writeShort((short) appearanceRecordList.size());
            entityType.marshal(dos);

            for (int idx = 0; idx < appearanceRecordList.size(); idx++) {
                FourByteChunk aFourByteChunk = appearanceRecordList.get(idx);
                aFourByteChunk.marshal(dos);
            } // end of list marshalling

        } // end try 
        catch (Exception e) {
            System.out.println(e);
        }
    } // end of marshal method

    public void unmarshal(DataInputStream dis) {
        try {
            numberOfEntities = (int) dis.readUnsignedShort();
            numberOfAppearanceRecords = (int) dis.readUnsignedShort();
            entityType.unmarshal(dis);
            for (int idx = 0; idx < numberOfAppearanceRecords; idx++) {
                FourByteChunk anX = new FourByteChunk();
                anX.unmarshal(dis);
                appearanceRecordList.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) {
        buff.putShort((short) numberOfEntities);
        buff.putShort((short) appearanceRecordList.size());
        entityType.marshal(buff);

        for (int idx = 0; idx < appearanceRecordList.size(); idx++) {
            FourByteChunk aFourByteChunk = (FourByteChunk) appearanceRecordList.get(idx);
            aFourByteChunk.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) {
        numberOfEntities = (int) (buff.getShort() & 0xFFFF);
        numberOfAppearanceRecords = (int) (buff.getShort() & 0xFFFF);
        entityType.unmarshal(buff);
        for (int idx = 0; idx < numberOfAppearanceRecords; idx++) {
            FourByteChunk anX = new FourByteChunk();
            anX.unmarshal(buff);
            appearanceRecordList.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);
    }

    /**
     * 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 SilentEntitySystem)) {
            return false;
        }

        final SilentEntitySystem rhs = (SilentEntitySystem) obj;

        if (!(numberOfEntities == rhs.numberOfEntities)) {
            ivarsEqual = false;
        }
        if (!(numberOfAppearanceRecords == rhs.numberOfAppearanceRecords)) {
            ivarsEqual = false;
        }
        if (!(entityType.equals(rhs.entityType))) {
            ivarsEqual = false;
        }

        for (int idx = 0; idx < appearanceRecordList.size(); idx++) {
            if (!(appearanceRecordList.get(idx).equals(rhs.appearanceRecordList.get(idx)))) {
                ivarsEqual = false;
            }
        }

        return ivarsEqual;
    }
} // end of class