// parses a datetime string that adhears to the given pattern and returns a java.util.Date object
public static java.util.Calendar parse(String input, String pattern)
throws IllegalArgumentException {
if (pattern == null) pattern = DEFAULT_DATETIME_PATTERN;
java.util.Calendar output = null;
if (input != null) {
if (pattern.equals("datetime")) {
output = javax.xml.bind.DatatypeConverter.parseDateTime(input);
} else if (pattern.equals("date")) {
output = javax.xml.bind.DatatypeConverter.parseDate(input);
} else if (pattern.equals("time")) {
output = javax.xml.bind.DatatypeConverter.parseTime(input);
} else if (pattern.equals("milliseconds")) {
output = java.util.Calendar.getInstance();
output.setTimeInMillis(Long.parseLong(input));
} else {
java.text.DateFormat formatter = new java.text.SimpleDateFormat(pattern);
formatter.setLenient(false);
output = java.util.Calendar.getInstance();
try {
output.setTime(formatter.parse(input));
} catch (java.text.ParseException ex) {
throw new IllegalArgumentException(tundra.exception.message(ex));
}
}
}
return output;
}
// adds two dates together
public static java.util.Calendar concatenate(java.util.Calendar date, java.util.Calendar time) {
java.util.Calendar localDateTime = new java.util.GregorianCalendar();
localDateTime.setTimeInMillis(date.getTimeInMillis() + time.getTimeInMillis());
return localDateTime;
}