Represent a subtype xdt:dayTimeDuration of a Duration
* as specified in
* XQuery 1.0 and XPath 2.0 Data Model, xdt:dayTimeDuration.
The DurationYearMonth object represents a period of Gregorian time, * with a lexical representation, "PnDTnHnMnS" that contains only year and month components. *
* * * @author Vikram Aroskar * @author Joe Wang * @see XMLGregorianCalendar#add(Duration) */ class DurationDayTimeImpl extends DurationImpl { public DurationDayTimeImpl( boolean isPositive, BigInteger days, BigInteger hours, BigInteger minutes, BigDecimal seconds) { super(isPositive, null, null, days, hours, minutes, seconds); convertToCanonicalDayTime(); } public DurationDayTimeImpl( boolean isPositive, int days, int hours, int minutes, int seconds) { this( isPositive, wrap(days), wrap(hours), wrap(minutes), (seconds != DatatypeConstants.FIELD_UNDEFINED ? new BigDecimal(String.valueOf(seconds)) : null)); } /** *Construct a Duration of type xdt:dayTimeDuration by parsing its String representation,
* "PnDTnHnMnS",
* XQuery 1.0 and XPath 2.0 Data Model, xdt:dayTimeDuration.
The datatype xdt:dayTimeDuration is a subtype of xs:duration
* whose lexical representation contains only day, hour, minute, and second components.
* This datatype resides in the namespace http://www.w3.org/2003/11/xpath-datatypes.
All four values are set and availabe from the created {@link Duration}
* *The XML Schema specification states that values can be of an arbitrary size. * Implementations may chose not to or be incapable of supporting arbitrarily large and/or small values. * An {@link UnsupportedOperationException} will be thrown with a message indicating implementation limits * if implementation capacities are exceeded.
* * @param lexicalRepresentation Lexical representation of a duration. * * @throws IllegalArgumentException IflexicalRepresentation is not a valid representation of a Duration expressed only in terms of days and time.
* @throws UnsupportedOperationException If implementation cannot support requested values.
* @throws NullPointerException If lexicalRepresentation is null.
*/
protected DurationDayTimeImpl(String lexicalRepresentation) {
super(lexicalRepresentation);
if (getYears() > 0 || getMonths() > 0) {
throw new IllegalArgumentException(
"Trying to create an xdt:dayTimeDuration with an invalid"
+ " lexical representation of \"" + lexicalRepresentation
+ "\", data model requires a format PnDTnHnMnS.");
}
convertToCanonicalDayTime();
}
/**
* Create a Duration of type xdt:dayTimeDuration using the specified milliseconds as defined in
*
* XQuery 1.0 and XPath 2.0 Data Model, xdt:dayTimeDuration.
The datatype xdt:dayTimeDuration is a subtype of xs:duration
* whose lexical representation contains only day, hour, minute, and second components.
* This datatype resides in the namespace http://www.w3.org/2003/11/xpath-datatypes.
All four values are set by computing their values from the specified milliseconds
* and are availabe using the get methods of the created {@link Duration}.
* The values conform to and are defined by:
The default start instance is defined by {@link GregorianCalendar}'s use of the start of the epoch: i.e., * {@link java.util.Calendar#YEAR} = 1970, * {@link java.util.Calendar#MONTH} = {@link java.util.Calendar#JANUARY}, * {@link java.util.Calendar#DATE} = 1, etc. * This is important as there are variations in the Gregorian Calendar, * e.g. leap years have different days in the month = {@link java.util.Calendar#FEBRUARY} * so the result of {@link Duration#getDays()} can be influenced.
* *Any remaining milliseconds after determining the day, hour, minute and second are discarded.
* * @param durationInMilliseconds Milliseconds ofDuration to create.
*
* @return New Duration created with the specified durationInMilliseconds.
*
* @see
* XQuery 1.0 and XPath 2.0 Data Model, xdt:dayTimeDuration
*/
protected DurationDayTimeImpl(final long durationInMilliseconds) {
super(durationInMilliseconds);
convertToCanonicalDayTime();
// only day, hour, minute, and second should have values
years = null;
months = null;
}
/**
* The value space of xs:dayTimeDuration is the set of fractional second values.
* @return fractional second values
*/
public float getValue() {
float sec = (seconds==null)?0:seconds.floatValue();
return (((((getDays() * 24) +
getHours()) * 60) +
getMinutes())*60) +
sec;
}
private void convertToCanonicalDayTime() {
while (getSeconds() >= 60)
{
seconds = seconds.subtract(BigDecimal.valueOf(60));
minutes = BigInteger.valueOf((long) getMinutes()).add(BigInteger.ONE);
}
while (getMinutes() >= 60)
{
minutes = minutes.subtract(BigInteger.valueOf(60));
hours = BigInteger.valueOf((long) getHours()).add(BigInteger.ONE);
}
while (getHours() >= 24)
{
hours = hours.subtract(BigInteger.valueOf(24));
days = BigInteger.valueOf((long) getDays()).add(BigInteger.ONE);
}
}
}