src/org/lwes/listener/DatagramQueueElement.java

   1 package org.lwes.listener;
   2
   3 import java.net.DatagramPacket;
   4
   5 /**
   6  * Element objects to use in the threaded queueing system.  This encapsulates
   7  * datagrams and timestamps.
   8  *
   9  * @author Michael P. Lum
  10  *
  11  */
  12 public class DatagramQueueElement implements QueueElement {
  13         private DatagramPacket packet = null;
  14         private long timestamp = 0L;
  15
  16         /**
  17          * Default constructor.
  18          */
  19         public DatagramQueueElement() {
  20         }
  21
  22         /**
  23          * Gets the datagram packet payload.
  24          *
  25          * @return the DatagramPacket
  26          */
  27         public DatagramPacket getPacket() {
  28                 return packet;
  29         }
  30
  31         /**
  32          * Sets the datagram packet payload
  33          *
  34          * @param packet
  35          *            the DatagramPacket
  36          */
  37         public void setPacket(DatagramPacket packet) {
  38                 this.packet = packet;
  39         }
  40
  41         /**
  42          * Gets the timestamp associated with this packet
  43          *
  44          * @return the timestamp
  45          */
  46         public long getTimestamp() {
  47                 return timestamp;
  48         }
  49
  50         /**
  51          * Sets the timestamp associated with this packet
  52          *
  53          * @param timestamp
  54          *            the timestamp
  55          */
  56         public void setTimestamp(long timestamp) {
  57                 this.timestamp = timestamp;
  58         }
  59
  60         /**
  61          * Resets this packet to null
  62          */
  63         public void clear() {
  64                 packet = null;
  65                 timestamp = 0x0L;
  66         }
  67
  68         /**
  69          * Determine equality with an object
  70          * @param object the object to compare with
  71          * @return true if the object is equal to this one, false if not
  72          */
  73         public boolean equals(Object object) {
  74                 if(object == null) return false;
  75
  76                 if (object instanceof DatagramQueueElement)
  77                         return equals((DatagramQueueElement) object);
  78
  79                 return false;
  80         }
  81
  82     @Override
  83     public int hashCode() {
  84         int result = packet != null ? packet.hashCode() : 0;
  85         result = 31 * result + (int) (timestamp ^ (timestamp >>> 32));
  86         return result;
  87     }
  88
  89     /**
  90          * Determine equality with another DatagramQueueElement
  91          * @param element the object to compare with
  92          * @return true if the object is equal to this one, false if not
  93          */
  94         public boolean equals(DatagramQueueElement element) {
  95                 if (element == null)
  96                         return false;
  97                 if (element.getPacket() == null)
  98                         return false;
  99
 100                 return ((element.getPacket().equals(this.packet)) && (element.timestamp == this.timestamp));
 101         }
 102
 103 }