private boolean _valid = false;
private long _seconds = 0L;
private String _text = null;
+ private String _timeText = null;
private static DateFormat DEFAULT_DATE_FORMAT = DateFormat.getDateTimeInstance();
+ private static DateFormat DEFAULT_TIME_FORMAT = DateFormat.getTimeInstance();
+ private static DateFormat ISO_8601_FORMAT = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'");
private static DateFormat[] ALL_DATE_FORMATS = null;
private static Calendar CALENDAR = null;
private static long SECS_SINCE_1970 = 0L;
private static long MSECS_SINCE_1970 = 0L;
private static long MSECS_SINCE_1990 = 0L;
private static long TWENTY_YEARS_IN_SECS = 0L;
-
private static final long GARTRIP_OFFSET = 631065600L;
+ /** Specifies original timestamp format */
+ public static final int FORMAT_ORIGINAL = 0;
+ /** Specifies locale-dependent timestamp format */
+ public static final int FORMAT_LOCALE = 1;
+ /** Specifies ISO 8601 timestamp format */
+ public static final int FORMAT_ISO_8601 = 2;
+
// Static block to initialise offsets
static
{
new SimpleDateFormat("EEE MMM dd HH:mm:ss yyyy"),
new SimpleDateFormat("HH:mm:ss dd MMM yyyy"),
new SimpleDateFormat("dd MMM yyyy HH:mm:ss"),
- new SimpleDateFormat("yyyy MMM dd HH:mm:ss")
+ new SimpleDateFormat("yyyy MMM dd HH:mm:ss"),
+ ISO_8601_FORMAT
};
}
/**
* Constructor
+ * @param inString String containing timestamp
*/
public Timestamp(String inString)
{
+ // TODO: Does it really help to store timestamps in seconds rather than ms?
if (inString != null && !inString.equals(""))
{
// Try to parse into a long
_seconds = rawValue / 1000L + TWENTY_YEARS_IN_SECS;
smallestDiff = diff3;
}
- // Lastly, check garmin offset
+ // Lastly, check gartrip offset
if (diff4 < smallestDiff)
{
- // milliseconds since garmin offset
+ // seconds since gartrip offset
_seconds = rawValue + GARTRIP_OFFSET;
}
_valid = true;
}
+ /**
+ * Constructor giving each field value individually
+ * @param inYear year
+ * @param inMonth month, beginning with 1
+ * @param inDay day of month, beginning with 1
+ * @param inHour hour of day, 0-24
+ * @param inMinute minute
+ * @param inSecond seconds
+ */
+ public Timestamp(int inYear, int inMonth, int inDay, int inHour, int inMinute, int inSecond)
+ {
+ Calendar cal = Calendar.getInstance();
+ cal.set(Calendar.YEAR, inYear);
+ cal.set(Calendar.MONTH, inMonth - 1);
+ cal.set(Calendar.DAY_OF_MONTH, inDay);
+ cal.set(Calendar.HOUR_OF_DAY, inHour);
+ cal.set(Calendar.MINUTE, inMinute);
+ cal.set(Calendar.SECOND, inSecond);
+ cal.set(Calendar.MILLISECOND, 0);
+ _seconds = cal.getTimeInMillis() / 1000;
+ _valid = true;
+ }
+
+
+ /**
+ * Constructor giving millis
+ * @param inMillis milliseconds since 1970
+ */
+ public Timestamp(long inMillis)
+ {
+ _seconds = inMillis / 1000;
+ _valid = true;
+ }
+
+
/**
* @return true if timestamp is valid
*/
}
+ /**
+ * Add the given TimeDifference to this Timestamp
+ * @param inOffset TimeDifference to add
+ * @return new Timestamp object
+ */
+ public Timestamp addOffset(TimeDifference inOffset)
+ {
+ return new Timestamp((_seconds + inOffset.getTotalSeconds()) * 1000L);
+ }
+
+
+ /**
+ * Subtract the given TimeDifference from this Timestamp
+ * @param inOffset TimeDifference to subtract
+ * @return new Timestamp object
+ */
+ public Timestamp subtractOffset(TimeDifference inOffset)
+ {
+ return new Timestamp((_seconds - inOffset.getTotalSeconds()) * 1000L);
+ }
+
+
/**
* @return Description of timestamp in locale-specific format
*/
public String getText()
{
+ return getText(FORMAT_LOCALE);
+ }
+
+ /**
+ * @param inFormat format of timestamp
+ * @return Description of timestamp in required format
+ */
+ public String getText(int inFormat)
+ {
+ if (inFormat == FORMAT_ISO_8601) {
+ return format(ISO_8601_FORMAT);
+ }
if (_text == null)
{
- if (_valid)
- {
- CALENDAR.setTimeInMillis(_seconds * 1000L);
- _text = DEFAULT_DATE_FORMAT.format(CALENDAR.getTime());
+ if (_valid) {
+ _text = format(DEFAULT_DATE_FORMAT);
}
else _text = "";
}
return _text;
}
+
+ /**
+ * @return Description of time part of timestamp in locale-specific format
+ */
+ public String getTimeText()
+ {
+ if (_timeText == null)
+ {
+ if (_valid) {
+ _timeText = format(DEFAULT_TIME_FORMAT);
+ }
+ else _timeText = "";
+ }
+ return _timeText;
+ }
+
+ /**
+ * Utility method for formatting dates / times
+ * @param inFormat formatter object
+ * @return formatted String
+ */
+ private String format(DateFormat inFormat)
+ {
+ CALENDAR.setTimeInMillis(_seconds * 1000L);
+ return inFormat.format(CALENDAR.getTime());
+ }
+
+ /**
+ * @return a Calendar object representing this timestamp
+ */
+ public Calendar getCalendar()
+ {
+ Calendar cal = Calendar.getInstance();
+ cal.setTimeInMillis(_seconds * 1000L);
+ return cal;
+ }
}