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129 lines
2.8 KiB
Java
129 lines
2.8 KiB
Java
// ProtocolEvent.java
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package support; // protocol support package
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/**
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This is the class for protocol events.
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@author Iain A. Robin, Kenneth J. Turner
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@version 1.0 (1st September 1999, IAR): initial version
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<br/> 1.4 (9th March 2006, KJT): updated for JDK 1.5
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<br/> 1.5 (22nd July 2010, KJT): minor tidying; addition of TRAVERSE
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event
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*/
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public class ProtocolEvent {
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/** Protocol event user -> protocol */
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public final static int SEND = 0;
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/** Protocol event protocol -> user */
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public final static int DELIVER = 1;
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/** Protocol event protocol -> medium */
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public final static int TRANSMIT = 2;
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/** Protocol event medium -> protocol */
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public final static int RECEIVE = 3;
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/** Protocol event medium fragmentation */
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public final static int FRAGMENT = 4;
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/** Protocol event medium loss */
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public final static int LOSE = 5;
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/** Protocol event timeout and retransmission */
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public final static int TIMEOUT = 6;
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/** Protocol event arbitrary comment */
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public final static int COMMENT = 7;
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/** Protocol event entity -> entity */
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public final static int TRAVERSE = 8;
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/** Protocol event protocol data unit */
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private PDU pdu = null;
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/** Protocol event type */
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private int eventType;
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/** Protocol event comment */
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private String comment = "";
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/** Protocol event target */
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private ProtocolEntity target;
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/**
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Constructor for a protocol event.
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@param type event type
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@param pdu protocol data unit
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*/
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public ProtocolEvent(int type, PDU pdu) {
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eventType = type;
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this.pdu = pdu;
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}
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/**
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Constructor for a protocol event.
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@param type event type
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@param target target entity
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@param comment event comment
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*/
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public ProtocolEvent(int type, ProtocolEntity target, String comment) {
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eventType = type;
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this.target = target;
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this.comment = comment;
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}
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/**
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Get the comment attribute of a protocol event.
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@return comment
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*/
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public String getComment() {
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return(comment);
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}
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/**
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Get the PDU attribute of a protocol event
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@return The pDU value
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*/
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public PDU getPDU() {
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return(pdu);
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}
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/**
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Get the target attribute of a protocol event.
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@return target
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*/
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public ProtocolEntity getTarget() {
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return(target);
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}
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/**
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Get the type attribute of a protocol event.
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@return The type value
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*/
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public int getType() {
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return(eventType);
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}
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/**
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Convert to a string representation of a protocol event.
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@return A string representation of the object.
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*/
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public String toString() {
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return(
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"Event <Type " + eventType + (pdu != null ?
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" " + pdu : " Target " + target.getName() + " Comment " + comment) +
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">");
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}
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}
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