Package jade.lang.acl

Class ISO8601

  • public class ISO8601
extends Object
    This class contains a set of static methods that convert to/from the Date Time format adopted by FIPA. The FIPA format is based on ISO8601, with the addition of milliseconds. Using the java.text.SimpleDateFormat notation, it is: yyyyMMdd'T'HHmmssSSS'Z' , where the 'T' serves to separate the Day from the Time, and the 'Z' indicates that the time is in UTC. The FIPA specs permit either local or UTC time, however, they do express a preference for UTC time (this is particularly helpful when passing messages between agents running on machines in different timezones).
    • Older versions of this code:
      • read DateTime as local time
      • wrote DateTime as local time
    • Current versions of this code:
      • read DateTime in both local time and UTC time
      • write DateTime as UTC time by default (can generate local time if toString(false) is called).
    Version:
    $Date$ $Revision$ Modified by:
    Author:
    Fabio Bellifemine - CSELT, Craig Sayers, HP Labs, Palo Alto, California

    • Constructor Detail

      • ISO8601

        public ISO8601()
        Default constructor.

    • Method Detail

      • toDate

        public static Date toDate​(String dateTimeToken)
                   throws Exception
        This method converts a FIPA DateTime token to a java.util.Date. It will accept both local and UTC time formats.
        Returns:
        an absolute value of DateTime
        Throws:
        an - Exception if the String is not a valid dateTime
        Exception

      • toString

        public static String toString​(Date d,
                              boolean useUTCtime)
        This method converts a java.util.Date into a FIPA DateTime token. Note: the current default behaviour is to generate dates in UTC time. see ISO8601.useUTCtime for details.
        Parameters:
        useUTCtime - controls the style used by toString, 'true' generates tokens using UTC time, 'false' using local time. If you need to send messages to agents compiled with older versions of Jade, then set this to false.
        Returns:
        a String, e.g. "19640625T073000000Z" to represent 7:30AM on the 25th of June of 1964, UTC time.

      • toString

        public static String toString​(Date d)
        This method converts a java.util.Date into a FIPA DateTime token by using the UTC time.
        Returns:
        a String, e.g. "19640625T073000000Z" to represent 7:30AM on the 25th of June of 1964, UTC time.

      • toRelativeTimeString

        public static String toRelativeTimeString​(long millisec)
        this method converts into a string in ISO8601 format representing relative time from the current time
        Parameters:
        millisec - is the number of milliseconds from now
        Returns:
        a String, e.g. "+00000000T010000000" to represent one hour from now

      • main

        public static void main​(String[] argv)
        The main is here only for debugging. You can test your conversion by executing the following command:

        java jade.lang.acl.ISO8601