net.sf.saxon.xqj
Class SaxonXMLGregorianCalendar

java.lang.Object
  javax.xml.datatype.XMLGregorianCalendar
      net.sf.saxon.xqj.SaxonXMLGregorianCalendar

All Implemented Interfaces:

Cloneable

public class SaxonXMLGregorianCalendar
extends XMLGregorianCalendar

Saxon implementation of the JAXP class javax.xml.datatype.XMLGregorianCalendar. This is currently used only by the XQJ interface for XQuery: the normal representation of a date, time, or dateTime value in Saxon is with a subclass of CalendarValue

The JAXP specification for this class defines it in terms of XML Schema 1.0 semantics. This implementation is more aligned to the XPath 2.0 semantics of the data types.

Note that this class, unlike the representations of all other data types, is mutable.

Constructor Summary

SaxonXMLGregorianCalendar(CalendarValue value)
Create a SaxonXMLGregorianCalendar from a Saxon CalendarValue object

Method Summary

void	add(Duration duration) Add duration to this instance.
void	clear() Unset all fields to undefined.
Object	clone() Creates and returns a copy of this object.
int	compare(XMLGregorianCalendar xmlGregorianCalendar) Compare two instances of W3C XML Schema 1.0 date/time datatypes according to partial order relation defined in W3C XML Schema 1.0 Part 2, Section 3.2.7.3, Order relation on dateTime.
int	getDay() Return day in month or DatatypeConstants.FIELD_UNDEFINED.
BigInteger	getEon() Return high order component for XML Schema 1.0 dateTime datatype field for year.
BigInteger	getEonAndYear() Return XML Schema 1.0 dateTime datatype field for year.
BigDecimal	getFractionalSecond() Return fractional seconds.
int	getHour() Return hours or DatatypeConstants.FIELD_UNDEFINED.
int	getMicrosecond() Return microsecond precision of getFractionalSecond().
int	getMinute() Return minutes or DatatypeConstants.FIELD_UNDEFINED.
int	getMonth() Return number of month or DatatypeConstants.FIELD_UNDEFINED.
int	getSecond() Return seconds or DatatypeConstants.FIELD_UNDEFINED.
int	getTimezone() Return timezone offset in minutes or DatatypeConstants.FIELD_UNDEFINED if this optional field is not defined.
TimeZone	getTimeZone(int defaultZoneoffset) Returns a java.util.TimeZone for this class.
QName	getXMLSchemaType() Return the name of the XML Schema date/time type that this instance maps to.
int	getYear() Return low order component for XML Schema 1.0 dateTime datatype field for year or DatatypeConstants.FIELD_UNDEFINED.
boolean	isValid() Validate instance by getXMLSchemaType() constraints.
XMLGregorianCalendar	normalize() Normalize this instance to UTC.
void	reset() Reset this XMLGregorianCalendar to its original values.
void	setCalendarValue(CalendarValue value) Set the calendar value of this object
void	setDay(int day) Set days in month.
void	setFractionalSecond(BigDecimal fractional) Set fractional seconds.
void	setHour(int hour) Set hours.
void	setMillisecond(int millisecond) Set milliseconds.
void	setMinute(int minute) Set minutes.
void	setMonth(int month) Set month.
void	setSecond(int second) Set seconds.
void	setTimezone(int offset) Set the number of minutes in the timezone offset.
void	setYear(BigInteger year) Set low and high order component of XSD dateTime year field.
void	setYear(int year) Set year of XSD dateTime year field.
CalendarValue	toCalendarValue() Convert this SaxonXMLGregorianCalendar to a Saxon CalendarValue object
GregorianCalendar	toGregorianCalendar() Convert this XMLGregorianCalendar to a GregorianCalendar.
GregorianCalendar	toGregorianCalendar(TimeZone timezone, Locale aLocale, XMLGregorianCalendar defaults) Convert this XMLGregorianCalendar along with provided parameters to a GregorianCalendar instance.
String	toXMLFormat() Return the lexical representation of this instance.

Methods inherited from class javax.xml.datatype.XMLGregorianCalendar

equals, getMillisecond, hashCode, setTime, setTime, setTime, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

SaxonXMLGregorianCalendar

public SaxonXMLGregorianCalendar(CalendarValue value)

Create a SaxonXMLGregorianCalendar from a Saxon CalendarValue object

Parameters:

value - the CalendarValue

Method Detail

setCalendarValue

public void setCalendarValue(CalendarValue value)

Set the calendar value of this object

Parameters:

value - the calendar value

clear

public void clear()

Unset all fields to undefined.

Set all int fields to DatatypeConstants.FIELD_UNDEFINED and reference fields to null.

Specified by:

clear in class XMLGregorianCalendar

reset

public void reset()

Reset this XMLGregorianCalendar to its original values.

Saxon does not attempt to reset to the initial value as defined in the specification of the superclass, because it cannot distinguish the initial setting from subsequent changes. This method is therefore synonymous with clear()

Specified by:

reset in class XMLGregorianCalendar

setYear

public void setYear(BigInteger year)

Set low and high order component of XSD dateTime year field.

Unset this field by invoking the setter with a parameter value of null.

Specified by:

setYear in class XMLGregorianCalendar

Parameters:

year - value constraints summarized in year field of date/time field mapping table.

Throws:

IllegalArgumentException - if year parameter is outside value constraints for the field as specified in date/time field mapping table.

setYear

public void setYear(int year)

Set year of XSD dateTime year field.

Unset this field by invoking the setter with a parameter value of DatatypeConstants.FIELD_UNDEFINED.

Note: if the absolute value of the year parameter is less than 10^9, the eon component of the XSD year field is set to null by this method.

Specified by:

setYear in class XMLGregorianCalendar

Parameters:

year - value constraints are summarized in year field of date/time field mapping table. If year is DatatypeConstants.FIELD_UNDEFINED, then eon is set to null.

setMonth

public void setMonth(int month)

Set month.

Unset this field by invoking the setter with a parameter value of DatatypeConstants.FIELD_UNDEFINED.

Specified by:

setMonth in class XMLGregorianCalendar

Parameters:

month - value constraints summarized in month field of date/time field mapping table.

Throws:

IllegalArgumentException - if month parameter is outside value constraints for the field as specified in date/time field mapping table.

setDay

public void setDay(int day)

Set days in month.

Unset this field by invoking the setter with a parameter value of DatatypeConstants.FIELD_UNDEFINED.

Specified by:

setDay in class XMLGregorianCalendar

Parameters:

day - value constraints summarized in day field of date/time field mapping table.

Throws:

IllegalArgumentException - if day parameter is outside value constraints for the field as specified in date/time field mapping table.

setTimezone

public void setTimezone(int offset)

Set the number of minutes in the timezone offset.

Unset this field by invoking the setter with a parameter value of DatatypeConstants.FIELD_UNDEFINED.

Specified by:

setTimezone in class XMLGregorianCalendar

Parameters:

offset - value constraints summarized in timezone field of date/time field mapping table.

Throws:

IllegalArgumentException - if offset parameter is outside value constraints for the field as specified in date/time field mapping table.

setHour

public void setHour(int hour)

Set hours.

Unset this field by invoking the setter with a parameter value of DatatypeConstants.FIELD_UNDEFINED.

Specified by:

setHour in class XMLGregorianCalendar

Parameters:

hour - value constraints summarized in hour field of date/time field mapping table.

Throws:

IllegalArgumentException - if hour parameter is outside value constraints for the field as specified in date/time field mapping table.

setMinute

public void setMinute(int minute)

Set minutes.

Unset this field by invoking the setter with a parameter value of DatatypeConstants.FIELD_UNDEFINED.

Specified by:

setMinute in class XMLGregorianCalendar

Parameters:

minute - value constraints summarized in minute field of date/time field mapping table.

Throws:

IllegalArgumentException - if minute parameter is outside value constraints for the field as specified in date/time field mapping table.

setSecond

public void setSecond(int second)

Set seconds.

Unset this field by invoking the setter with a parameter value of DatatypeConstants.FIELD_UNDEFINED.

Specified by:

setSecond in class XMLGregorianCalendar

Parameters:

second - value constraints summarized in second field of date/time field mapping table.

Throws:

IllegalArgumentException - if second parameter is outside value constraints for the field as specified in date/time field mapping table.

setMillisecond

public void setMillisecond(int millisecond)

Set milliseconds.

Unset this field by invoking the setter with a parameter value of DatatypeConstants.FIELD_UNDEFINED.

Specified by:

setMillisecond in class XMLGregorianCalendar

Parameters:

millisecond - value constraints summarized in millisecond field of date/time field mapping table.

Throws:

IllegalArgumentException - if millisecond parameter is outside value constraints for the field as specified in date/time field mapping table.

setFractionalSecond

public void setFractionalSecond(BigDecimal fractional)

Set fractional seconds.

Unset this field by invoking the setter with a parameter value of null.

Specified by:

setFractionalSecond in class XMLGregorianCalendar

Parameters:

fractional - value constraints summarized in fractional field of date/time field mapping table.

Throws:

IllegalArgumentException - if fractional parameter is outside value constraints for the field as specified in date/time field mapping table.

getEon

public BigInteger getEon()

Return high order component for XML Schema 1.0 dateTime datatype field for year. null if this optional part of the year field is not defined.

Value constraints for this value are summarized in year field of date/time field mapping table.

Specified by:

getEon in class XMLGregorianCalendar

Returns:

eon of this XMLGregorianCalendar. The value returned is an integer multiple of 10^9.

See Also:

getYear(), getEonAndYear()

getYear

public int getYear()

Return low order component for XML Schema 1.0 dateTime datatype field for year or DatatypeConstants.FIELD_UNDEFINED.

Value constraints for this value are summarized in year field of date/time field mapping table.

Specified by:

getYear in class XMLGregorianCalendar

Returns:

year of this XMLGregorianCalendar.

See Also:

getEon(), getEonAndYear()

getEonAndYear

public BigInteger getEonAndYear()

Return XML Schema 1.0 dateTime datatype field for year.

Value constraints for this value are summarized in year field of date/time field mapping table.

Specified by:

getEonAndYear in class XMLGregorianCalendar

Returns:

sum of eon and BigInteger.valueOf(year) when both fields are defined. When only year is defined, return it. When both eon and year are not defined, return null.

See Also:

getEon(), getYear()

getMonth

public int getMonth()

Return number of month or DatatypeConstants.FIELD_UNDEFINED.

Value constraints for this value are summarized in month field of date/time field mapping table.

Specified by:

getMonth in class XMLGregorianCalendar

Returns:

year of this XMLGregorianCalendar.

getDay

public int getDay()

Return day in month or DatatypeConstants.FIELD_UNDEFINED.

Value constraints for this value are summarized in day field of date/time field mapping table.

Specified by:

getDay in class XMLGregorianCalendar

See Also:

setDay(int)

getTimezone

public int getTimezone()

Return timezone offset in minutes or DatatypeConstants.FIELD_UNDEFINED if this optional field is not defined.

Value constraints for this value are summarized in timezone field of date/time field mapping table.

Specified by:

getTimezone in class XMLGregorianCalendar

See Also:

setTimezone(int)

getHour

public int getHour()

Return hours or DatatypeConstants.FIELD_UNDEFINED. Returns DatatypeConstants.FIELD_UNDEFINED if this field is not defined.

Value constraints for this value are summarized in hour field of date/time field mapping table.

Specified by:

getHour in class XMLGregorianCalendar

See Also:

XMLGregorianCalendar.setTime(int, int, int)

getMinute

public int getMinute()

Return minutes or DatatypeConstants.FIELD_UNDEFINED.

Returns DatatypeConstants.FIELD_UNDEFINED if this field is not defined.

Value constraints for this value are summarized in minute field of date/time field mapping table.

Specified by:

getMinute in class XMLGregorianCalendar

See Also:

XMLGregorianCalendar.setTime(int, int, int)

getSecond

public int getSecond()

Return seconds or DatatypeConstants.FIELD_UNDEFINED.

Returns DatatypeConstants.FIELD_UNDEFINED if this field is not defined. When this field is not defined, the optional xs:dateTime fractional seconds field, represented by getFractionalSecond() and XMLGregorianCalendar.getMillisecond(), must not be defined.

Value constraints for this value are summarized in second field of date/time field mapping table.

Specified by:

getSecond in class XMLGregorianCalendar

Returns:

Second of this XMLGregorianCalendar.

See Also:

getFractionalSecond(), XMLGregorianCalendar.getMillisecond(), XMLGregorianCalendar.setTime(int, int, int)

getMicrosecond

public int getMicrosecond()

Return microsecond precision of getFractionalSecond().

This method represents a convenience accessor to infinite precision fractional second value returned by getFractionalSecond(). The returned value is the rounded down to microseconds value of getFractionalSecond(). When getFractionalSecond() returns null, this method must return DatatypeConstants.FIELD_UNDEFINED.

Value constraints for this value are summarized in second field of date/time field mapping table.

Returns:

Millisecond of this XMLGregorianCalendar.

See Also:

getFractionalSecond(), XMLGregorianCalendar.setTime(int, int, int)

getFractionalSecond

public BigDecimal getFractionalSecond()

Return fractional seconds.

null is returned when this optional field is not defined.

Value constraints are detailed in second field of date/time field mapping table.

This optional field can only have a defined value when the xs:dateTime second field, represented by getSecond(), does not return DatatypeConstants.FIELD_UNDEFINED.

Specified by:

getFractionalSecond in class XMLGregorianCalendar

Returns:

fractional seconds of this XMLGregorianCalendar.

See Also:

getSecond(), XMLGregorianCalendar.setTime(int, int, int, java.math.BigDecimal)

compare

public int compare(XMLGregorianCalendar xmlGregorianCalendar)

Compare two instances of W3C XML Schema 1.0 date/time datatypes according to partial order relation defined in W3C XML Schema 1.0 Part 2, Section 3.2.7.3, Order relation on dateTime.

xsd:dateTime datatype field mapping to accessors of this class are defined in date/time field mapping table.

Specified by:

compare in class XMLGregorianCalendar

Parameters:

xmlGregorianCalendar - Instance of XMLGregorianCalendar to compare

Returns:

The relationship between this XMLGregorianCalendar and the specified xmlGregorianCalendar as DatatypeConstants.LESSER, DatatypeConstants.EQUAL, DatatypeConstants.GREATER or DatatypeConstants.INDETERMINATE.

Throws:

NullPointerException - if xmlGregorianCalendar is null.

normalize

public XMLGregorianCalendar normalize()

Normalize this instance to UTC.

2000-03-04T23:00:00+03:00 normalizes to 2000-03-04T20:00:00Z

Implements W3C XML Schema Part 2, Section 3.2.7.3 (A).

Specified by:

normalize in class XMLGregorianCalendar

Returns:

a copy of this XMLGregorianCalendar normalized to UTC.

toXMLFormat

public String toXMLFormat()

Return the lexical representation of this instance. The format is specified in XML Schema 1.0 Part 2, Section 3.2.[7-14].1, Lexical Representation".

Specific target lexical representation format is determined by getXMLSchemaType().

Specified by:

toXMLFormat in class XMLGregorianCalendar

Returns:

XML, as String, representation of this XMLGregorianCalendar

Throws:

IllegalStateException - if the combination of set fields does not match one of the eight defined XML Schema builtin date/time datatypes.

getXMLSchemaType

public QName getXMLSchemaType()

Return the name of the XML Schema date/time type that this instance maps to. Type is computed based on fields that are set.

Specified by:

getXMLSchemaType in class XMLGregorianCalendar

Returns:

One of the following class constants: DatatypeConstants.DATETIME, DatatypeConstants.TIME, DatatypeConstants.DATE, DatatypeConstants.GYEARMONTH, DatatypeConstants.GMONTHDAY, DatatypeConstants.GYEAR, DatatypeConstants.GMONTH or DatatypeConstants.GDAY.

Throws:

IllegalStateException - if the combination of set fields does not match one of the eight defined XML Schema builtin date/time datatypes.

isValid

public boolean isValid()

Validate instance by getXMLSchemaType() constraints.

Specified by:

isValid in class XMLGregorianCalendar

Returns:

true if data values are valid.

add

public void add(Duration duration)

Add duration to this instance.

The computation is specified in XML Schema 1.0 Part 2, Appendix E, Adding durations to dateTimes>. date/time field mapping table defines the mapping from XML Schema 1.0 dateTime fields to this class' representation of those fields.

Specified by:

add in class XMLGregorianCalendar

Parameters:

duration - Duration to add to this XMLGregorianCalendar.

Throws:

NullPointerException - when duration parameter is null.

toGregorianCalendar

public GregorianCalendar toGregorianCalendar()

Convert this XMLGregorianCalendar to a GregorianCalendar.

When this instance has an undefined field, this conversion relies on the java.util.GregorianCalendar default for its corresponding field. A notable difference between XML Schema 1.0 date/time datatypes and java.util.GregorianCalendar is that Timezone value is optional for date/time datatypes and it is a required field for java.util.GregorianCalendar. See javadoc for java.util.TimeZone.getDefault() on how the default is determined. To explicitly specify the TimeZone instance, see toGregorianCalendar(java.util.TimeZone, Locale, javax.xml.datatype.XMLGregorianCalendar).

Specified by:

toGregorianCalendar in class XMLGregorianCalendar

See Also:

toGregorianCalendar(java.util.TimeZone, java.util.Locale, javax.xml.datatype.XMLGregorianCalendar)

toGregorianCalendar

public GregorianCalendar toGregorianCalendar(TimeZone timezone,
                                             Locale aLocale,
                                             XMLGregorianCalendar defaults)

Convert this XMLGregorianCalendar along with provided parameters to a GregorianCalendar instance.

Since XML Schema 1.0 date/time datetypes has no concept of timezone ids or daylight savings timezone ids, this conversion operation allows the user to explicitly specify one with timezone parameter.

To compute the return value's TimeZone field,

• when parameter timeZone is non-null, it is the timezone field.
• else when this.getTimezone() != FIELD_UNDEFINED, create a java.util.TimeZone with a custom timezone id using the this.getTimezone().
• else when defaults.getTimezone() != FIELD_UNDEFINED, create a java.util.TimeZone with a custom timezone id using defaults.getTimezone().
• else use the GregorianCalendar default timezone value for the host is defined as specified by java.util.TimeZone.getDefault().

To ensure consistency in conversion implementations, the new GregorianCalendar should be instantiated in following manner.

• Create a new java.util.GregorianCalendar(TimeZone, Locale) with TimeZone set as specified above and the Locale parameter.
• Initialize all GregorianCalendar fields by calling Calendar.clear()
• Obtain a pure Gregorian Calendar by invoking GregorianCalendar.setGregorianChange( new Date(Long.MIN_VALUE)).
• Its fields ERA, YEAR, MONTH, DAY_OF_MONTH, HOUR_OF_DAY, MINUTE, SECOND and MILLISECOND are set using the method Calendar.set(int,int)

Specified by:

toGregorianCalendar in class XMLGregorianCalendar

Parameters:

timezone - provide Timezone. null is a legal value.

aLocale - provide explicit Locale. Use default GregorianCalendar locale if value is null.

defaults - provide default field values to use when corresponding field for this instance is FIELD_UNDEFINED or null. If defaultsis null or a field within the specified defaults is undefined, just use java.util.GregorianCalendar defaults.

Returns:

a java.util.GregorianCalendar conversion of this instance.

getTimeZone

public TimeZone getTimeZone(int defaultZoneoffset)

Returns a java.util.TimeZone for this class.

If timezone field is defined for this instance, returns TimeZone initialized with custom timezone id of zoneoffset. If timezone field is undefined, try the defaultZoneoffset that was passed in. If defaultZoneoffset is FIELD_UNDEFINED, return default timezone for this host. (Same default as java.util.GregorianCalendar).

Specified by:

getTimeZone in class XMLGregorianCalendar

Parameters:

defaultZoneoffset - default zoneoffset if this zoneoffset is DatatypeConstants.FIELD_UNDEFINED.

Returns:

TimeZone for this.

clone

public Object clone()

Creates and returns a copy of this object.

Specified by:

clone in class XMLGregorianCalendar

Returns:

copy of this Object

toCalendarValue

public CalendarValue toCalendarValue()

Convert this SaxonXMLGregorianCalendar to a Saxon CalendarValue object

Returns:

the corresponding CalendarValue