org.ka2ddo.opentrac
Class OpenTracTimestamp

java.lang.Object
  extended by org.ka2ddo.opentrac.OpenTracElement
      extended by org.ka2ddo.opentrac.OpenTracTimestamp
All Implemented Interfaces:
java.io.Serializable

public class OpenTracTimestamp
extends OpenTracElement

An OpenTRAC element that represents the current time at an entity in Java milliseconds since 1 Jan 1970 UTC.

See Also:
Serialized Form

Field Summary
 long timestamp
          Timestamp value in milliseconds since 1 Jan 1970 UTC (the Unix epoch),
 
Fields inherited from class org.ka2ddo.opentrac.OpenTracElement
id
 
Constructor Summary
OpenTracTimestamp()
          Create an OpenTracTimestamp element for the current time.
OpenTracTimestamp(int type, byte[] body, int offset, int length)
          Create an OpenTRAC element with a 4-byte timestamp value from the next series of bytes in an encoded OpenTRAC message.
 
Method Summary
 int computeBody(byte[] buf, int offset)
          Append this element to a message buffer
 boolean equals(OpenTracElement other)
          Test if this OpenTracElement has the same type and value as another OpenTracElement.
 int length()
          Return the number of bytes needed to encode this element.
 java.lang.String valueString()
          Get the string representation of the value of this element.
 
Methods inherited from class org.ka2ddo.opentrac.OpenTracElement
getId, toString
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Field Detail

timestamp

public long timestamp
Timestamp value in milliseconds since 1 Jan 1970 UTC (the Unix epoch),

Constructor Detail

OpenTracTimestamp

public OpenTracTimestamp()
Create an OpenTracTimestamp element for the current time.


OpenTracTimestamp

public OpenTracTimestamp(int type,
                         byte[] body,
                         int offset,
                         int length)
Create an OpenTRAC element with a 4-byte timestamp value from the next series of bytes in an encoded OpenTRAC message.

Parameters:
type - OpenTRAC element type code
body - byte array containing the encoded OpenTRAC elements
offset - starting index in the array where this element begins
length - remaining number of bytes in the OpenTRAC encoded message
Method Detail

valueString

public java.lang.String valueString()
Get the string representation of the value of this element.

Specified by:
valueString in class OpenTracElement
Returns:
value string

computeBody

public int computeBody(byte[] buf,
                       int offset)
Append this element to a message buffer

Specified by:
computeBody in class OpenTracElement
Parameters:
buf - byte array to add the element to
offset - starting index to store the element
Returns:
index after the end of the stored element

length

public int length()
Return the number of bytes needed to encode this element.

Specified by:
length in class OpenTracElement
Returns:
byte count needed to hold this element

equals

public boolean equals(OpenTracElement other)
Test if this OpenTracElement has the same type and value as another OpenTracElement.

Specified by:
equals in class OpenTracElement
Parameters:
other - OpenTracElement to compare against this element
Returns:
boolean true if elements are of the same type, class, and value