@Override
public void writeImpl(ByteQueue queue) {
queue.push(year);
queue.push(month.getId());
queue.push((byte) day);
queue.push(dayOfWeek.getId());
}
//
// Reading and writing
//
public Date(ByteQueue queue) {
readTag(queue);
year = queue.popU1B();
month = Month.valueOf(queue.pop());
day = queue.popU1B();
dayOfWeek = DayOfWeek.valueOf(queue.pop());
}
@Override
public int hashCode() {
final int PRIME = 31;
int result = 1;
result = PRIME * result + day;
result = PRIME * result + ((dayOfWeek == null) ? 0 : dayOfWeek.hashCode());
result = PRIME * result + ((month == null) ? 0 : month.hashCode());
result = PRIME * result + year;
return result;
}
@Override
public int compareTo(Date that) {
if (!isSpecific())
throw new BACnetRuntimeException(
"Comparisons can only be made between specific dates: " + this);
if (!that.isSpecific())
throw new BACnetRuntimeException(
"Comparisons can only be made between specific dates: " + that);
if (year == that.year) {
if (month == that.month) return day - that.day;
return month.ordinal() - that.month.ordinal();
}
return year - that.year;
}
/**
* Matches this presumably wildcard date with a (that) necessarily specifically defined date to
* determine if (true) the given date is one of this' defined dates or (false) not.
*
* @param that the specific date with which to compare.
* @return
*/
@Override
public boolean matches(Date that) {
if (!that.isSpecific())
throw new BACnetRuntimeException("Dates for matching must be completely specified: " + that);
if (!matchYear(that.year)) return false;
if (!month.matches(that.month)) return false;
if (!matchDay(that)) return false;
if (!dayOfWeek.matches(that)) return false;
return true;
}
@Override
public boolean equals(Object obj) {
if (this == obj) return true;
if (obj == null) return false;
if (getClass() != obj.getClass()) return false;
final Date other = (Date) obj;
if (day != other.day) return false;
if (dayOfWeek == null) {
if (other.dayOfWeek != null) return false;
} else if (!dayOfWeek.equals(other.dayOfWeek)) return false;
if (month == null) {
if (other.month != null) return false;
} else if (!month.equals(other.month)) return false;
if (year != other.year) return false;
return true;
}
private void resetTo(GregorianCalendar gc) {
this.year = gc.get(Calendar.YEAR) - 1900;
this.month = Month.valueOf((byte) (gc.get(Calendar.MONTH) + 1));
this.day = gc.get(Calendar.DATE);
this.dayOfWeek = DayOfWeek.valueOf((byte) (((gc.get(Calendar.DAY_OF_WEEK) + 5) % 7) + 1));
}
/** @return true if the date has been completely specified, false if any fields is unspecified. */
public boolean isSpecific() {
if (year == UNSPECIFIED_YEAR) return false;
if (!month.isSpecific()) return false;
if (day == UNSPECIFIED_DAY || day == LAST_DAY_OF_MONTH) return false;
return true;
}
public GregorianCalendar calculateGC() {
if (!isSpecific())
throw new BACnetRuntimeException("Date must be completely specified to calculate calendar");
return new GregorianCalendar(year + 1900, (month.getId() & 0xff) - 1, day, 12, 0);
}