Examples of org.joda.time.DateTimeZone

org.joda.time.DateTimeZone
DateTimeZone represents a time zone.
A time zone is a system of rules to convert time from one geographic location to another. For example, Paris, France is one hour ahead of London, England. Thus when it is 10:00 in London, it is 11:00 in Paris.
All time zone rules are expressed, for historical reasons, relative to Greenwich, London. Local time in Greenwich is referred to as Greenwich Mean Time (GMT). This is similar, but not precisely identical, to Universal Coordinated Time, or UTC. This library only uses the term UTC.
Using this system, America/Los_Angeles is expressed as UTC-08:00, or UTC-07:00 in the summer. The offset -08:00 indicates that America/Los_Angeles time is obtained from UTC by adding -08:00, that is, by subtracting 8 hours.
The offset differs in the summer because of daylight saving time, or DST. The following definitions of time are generally used:
- UTC - The reference time.
- Standard Time - The local time without a daylight saving time offset. For example, in Paris, standard time is UTC+01:00.
- Daylight Saving Time - The local time with a daylight saving time offset. This offset is typically one hour, but not always. It is typically used in most countries away from the equator. In Paris, daylight saving time is UTC+02:00.
- Wall Time - This is what a local clock on the wall reads. This will be either Standard Time or Daylight Saving Time depending on the time of year and whether the location uses Daylight Saving Time.
Unlike the Java TimeZone class, DateTimeZone is immutable. It also only supports long format time zone ids. Thus EST and ECT are not accepted. However, the factory that accepts a TimeZone will attempt to convert from the old short id to a suitable long id.
DateTimeZone is thread-safe and immutable, and all subclasses must be as well. @author Brian S O'Neill @author Stephen Colebourne @since 1.0

    private static RubyTime createTime(IRubyObject recv, IRubyObject[] args, boolean gmt) {
        Ruby runtime = recv.getRuntime();
        int len = ARG_SIZE;
        Boolean isDst = null;


        DateTimeZone dtz;
        if (gmt) {
            dtz = DateTimeZone.UTC;
        } else if (args.length == 10 && args[9] instanceof RubyString) {
            dtz = getTimeZone(runtime, ((RubyString) args[9]).toString());
        } else {
            dtz = getLocalTimeZone(runtime);
        }
 
        if (args.length == 10) {
      if(args[8] instanceof RubyBoolean) {
          isDst = ((RubyBoolean)args[8]).isTrue();
      }
            args = new IRubyObject[] { args[5], args[4], args[3], args[2], args[1], args[0], runtime.getNil() };
        } else {
            // MRI accepts additional wday argument which appears to be ignored.
            len = args.length;


            if (len < ARG_SIZE) {
                IRubyObject[] newArgs = new IRubyObject[ARG_SIZE];
                System.arraycopy(args, 0, newArgs, 0, args.length);
                for (int i = len; i < ARG_SIZE; i++) {
                    newArgs[i] = runtime.getNil();
                }
                args = newArgs;
                len = ARG_SIZE;
            }
        }


        if (args[0] instanceof RubyString) {
            args[0] = RubyNumeric.str2inum(runtime, (RubyString) args[0], 10, false);
        }


        int year = (int) RubyNumeric.num2long(args[0]);
        int month = 1;


        if (len > 1) {
            if (!args[1].isNil()) {
                IRubyObject tmp = args[1].checkStringType();
                if (!tmp.isNil()) {
                    String monthString = tmp.toString().toLowerCase();
                    Integer monthInt = MONTHS_MAP.get(monthString);


                    if (monthInt != null) {
                        month = monthInt;
                    } else {
                        try {
                            month = Integer.parseInt(monthString);
                        } catch (NumberFormatException nfExcptn) {
                            throw runtime.newArgumentError("Argument out of range.");
                        }
                    }
                } else {
                    month = (int) RubyNumeric.num2long(args[1]);
                }
            }
            if (1 > month || month > 12) {
                throw runtime.newArgumentError("Argument out of range: for month: " + month);
            }
        }


        int[] int_args = { 1, 0, 0, 0, 0, 0 };


        for (int i = 0; int_args.length >= i + 2; i++) {
            if (!args[i + 2].isNil()) {
                if (!(args[i + 2] instanceof RubyNumeric)) {
                    args[i + 2] = args[i + 2].callMethod(
                            runtime.getCurrentContext(), "to_i");
                }


                long value = RubyNumeric.num2long(args[i + 2]);
                if (time_min[i] > value || value > time_max[i]) {
                    throw runtime.newArgumentError("argument out of range.");
                }
                int_args[i] = (int) value;
            }
        }


        if (!runtime.is1_9()) {
            if (0 <= year && year < 39) {
                year += 2000;
            } else if (69 <= year && year < 139) {
                year += 1900;
            }
        }


        DateTime dt;
        // set up with min values and then add to allow rolling over
        try {
            dt = new DateTime(year, 1, 1, 0, 0, 0, 0, DateTimeZone.UTC);


            dt = dt.plusMonths(month - 1)
                    .plusDays(int_args[0] - 1)
                    .plusHours(int_args[1])
                    .plusMinutes(int_args[2])
                    .plusSeconds(int_args[3]);
            if (runtime.is1_9() && !args[5].isNil()) {
                double millis = RubyFloat.num2dbl(args[5]);
                int int_millis = (int) (millis * 1000) % 1000;
                dt = dt.plusMillis(int_millis);
            }


            dt = dt.withZoneRetainFields(dtz);


            // we might need to perform a DST correction
            if (isDst != null) {
                // the instant at which we will ask dtz what the difference between DST and
                // standard time is
                long offsetCalculationInstant = dt.getMillis();


                // if we might be moving this time from !DST -> DST, the offset is assumed
                // to be the same as it was just before we last moved from DST -> !DST
                if (dtz.isStandardOffset(dt.getMillis())) {
                    offsetCalculationInstant = dtz.previousTransition(offsetCalculationInstant);
                }


                int offset = dtz.getStandardOffset(offsetCalculationInstant)
                        - dtz.getOffset(offsetCalculationInstant);


                if (!isDst && !dtz.isStandardOffset(dt.getMillis())) {
                    dt = dt.minusMillis(offset);
                }
                if (isDst && dtz.isStandardOffset(dt.getMillis())) {
                    dt = dt.plusMillis(offset);
                }
            }
        } catch (org.joda.time.IllegalFieldValueException e) {
            throw runtime.newArgumentError("time out of range");

View Full Code Here

        dateTimeZones = new ArrayList<ForwardingDateTimeZone>();
        final Set timeZoneIds = DateTimeZone.getAvailableIDs();
        for (Object object : timeZoneIds) {
            String id = (String) object;
            if (id.matches(TIMEZONE_ID_PREFIXES)) {
                final DateTimeZone dtz = DateTimeZone.forID(id);
                dateTimeZones.add(new ForwardingDateTimeZone(id) {
                    @Override
                    protected DateTimeZone delegate() {
                        return dtz;
                    }

View Full Code Here

    @PostConstruct
    public void init() {
        if (!defaultTimeZoneId.isUnsatisfied()) {
            try {
                String id = defaultTimeZoneId.get();
                DateTimeZone dtz = DateTimeZone.forID(id);
                defaultDateTimeZone = constructTimeZone(dtz);
            } catch (IllegalArgumentException e) {
                log.warn("DefaultDateTimeZoneProducer: Default TimeZone Id of " + defaultTimeZoneId + " was not found");
            }
        }
        if (null == defaultDateTimeZone) {
            DateTimeZone dtz = DateTimeZone.getDefault();
            defaultDateTimeZone = constructTimeZone(dtz);
        }
    }

View Full Code Here


  @PostConstruct
  public void startupTimeAroundTheWorld(){
    log.info("This bean started on: ");
    for (Iterator<DateTimeZone> iterator = timeZones.iterator(); iterator.hasNext();) {
      DateTimeZone dtz = iterator.next();
      DateTimeFormatter fmt = DateTimeFormat.forPattern(STANDARD_DATE_TIME_FORMAT);
      DateTime dt = new DateTime().withZone(dtz);


      log.info(dtz.getID() + " - "+ fmt.print(dt));
    }
  }

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  public List<DateTime> getAvailableTimeZones(){
    List<DateTimeZone> filteredTimeZones = filterTimeZones();


    List<DateTime> list = new LinkedList<DateTime>();
    for (Iterator<DateTimeZone> iterator = filteredTimeZones.iterator(); iterator.hasNext();) {
      DateTimeZone dtz = iterator.next();
      DateTime dateTime = new DateTime().withZone(dtz);
      list.add(dateTime);
    }
    return list;
  }

View Full Code Here

  private List<DateTimeZone> filterTimeZones() {
    String region = FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap().get("region");
    if(region!=null){
      List<DateTimeZone> filteredTimeZones = new LinkedList<DateTimeZone>();
      for (Iterator<DateTimeZone> iterator = timeZones.iterator(); iterator.hasNext();) {
        DateTimeZone dtz = iterator.next();
        if(dtz.getID().startsWith(region))
          filteredTimeZones.add(dtz);
      }
      return filteredTimeZones;
    }
    return timeZones;

View Full Code Here

    long soon = System.currentTimeMillis() + (7 * MILLIS_PER_DAY);
    for (int i = 0; i < tzids.length; i+=2) {
      String tzid = tzids[i];
      String timeZoneTzid = tzids[i+1] == null ? tzid : tzids[i+1];
      TimeZone utilTz = TimeZone.getTimeZone(timeZoneTzid);
      DateTimeZone jodaTz = DateTimeZone.forID(tzid);
      // make sure that the timezone is recognized and we're not just testing
      // UTC over and over.
      assertTrue(utilTz.getID(),
                 "UTC".equals(utilTz.getID()) ||
                 !utilTz.hasSameRules(TimeZone.getTimeZone("UTC")));

View Full Code Here


  /*
   * ||<day><session><etx>||<time stamp>
   */
  protected void encodeTail(final ByteBuffer buffer) {
    final DateTimeZone zone = getExchange().kind.time.zone;
    //
    buffer.put(getTradeDay().code); // <day>
    buffer.put(getSession().code); // <session>
    buffer.put(ETX); // <etx>
    encodeFeedTimeStamp(millisUTC, zone, buffer);// <time stamp>

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  /*
   * ||<day><session><etx>||<time stamp>
   */
  protected void decodeTail(final ByteBuffer buffer) {
    final DateTimeZone zone = getExchange().kind.time.zone;
    //
    final byte dayCode = buffer.get(); // <day>
    final byte sessCode = buffer.get(); // <session>
    check(buffer.get(), ETX); // <etx>
    millisUTC = decodeFeedTimeStamp(zone, buffer); // <time stamp>

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        if (input == null || input.size() < 1 || input.get(0) == null) {
            return null;
        }
        DateTimeFormatter dtf = DateTimeFormat.forPattern(DataType
                .toString(input.get(1)));
        DateTimeZone dtz = DateTimeZone.forOffsetMillis(DateTimeZone.forID(
                DataType.toString(input.get(2))).getOffset(null));
        return dtf.withZone(dtz).parseDateTime(DataType.toString(input.get(0)));
    }

View Full Code Here

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