Package net.sf.saxon.value
Class DurationValue
java.lang.Object
net.sf.saxon.value.Value<AtomicValue>
net.sf.saxon.value.AtomicValue
net.sf.saxon.value.DurationValue
- All Implemented Interfaces:
PullEvent
,GroundedValue<AtomicValue>
,Item<AtomicValue>
,ValueRepresentation<AtomicValue>
,ConversionResult
- Direct Known Subclasses:
DayTimeDurationValue
,YearMonthDurationValue
A value of type xs:duration
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Field Summary
FieldsModifier and TypeFieldDescriptionprotected int
protected int
protected boolean
protected long
Fields inherited from class net.sf.saxon.value.AtomicValue
typeLabel
Fields inherited from class net.sf.saxon.value.Value
INDETERMINATE_ORDERING
Fields inherited from interface net.sf.saxon.om.ValueRepresentation
EMPTY_VALUE_ARRAY
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Constructor Summary
ConstructorsModifierConstructorDescriptionprotected
Private constructor for internal useDurationValue
(boolean positive, int years, int months, int days, int hours, int minutes, long seconds, int microseconds) Constructor for xs:duration taking the components of the duration.DurationValue
(boolean positive, int years, int months, int days, int hours, int minutes, long seconds, int microseconds, AtomicType type) Constructor for xs:duration taking the components of the duration, plus a user-specified type which must be a subtype of xs:duration. -
Method Summary
Modifier and TypeMethodDescriptionadd
(DurationValue other) Add two durationsprotected static ValidationFailure
badDuration
(String msg, CharSequence s) copyAsSubType
(AtomicType typeLabel) Create a copy of this atomic value, with a different type labeldivide
(DurationValue other) Divide a duration by a another durationboolean
Test if the two durations are of equal length.getComponent
(int component) Get a component of the normalized valueint
getDays()
Get the days componentint
getHours()
Get the hours componentdouble
Get length of duration in seconds, assuming an average length of month.int
Get the microseconds componentint
Get the minutes componentint
Get the months componentConvert to stringDetermine the primitive type of the value.Get a Comparable value that implements the XML Schema ordering comparison semantics for this value.static Comparable
getSchemaComparable
(DurationValue value) Get a Comparable value that implements the XML Schema ordering comparison semantics for this value.int
Get the seconds componentint
Get the total number of months (ignoring the days/hours/minutes/seconds)Get the total number of seconds (ignoring the years/months)getXPathComparable
(boolean ordered, StringCollator collator, XPathContext context) Get an object value that implements the XPath equality and ordering comparison semantics for this value.int
getYears()
Get the year componentint
hashCode()
static ConversionResult
Static factory method: create a duration value from a supplied string, in ISO 8601 format [-]PnYnMnDTnHnMnSprotected static ConversionResult
makeDuration
(CharSequence s, boolean allowYM, boolean allowDT) multiply
(double factor) Multiply a duration by a numbernegate()
Negate a duration (same as subtracting from zero, but it preserves the type of the original duration)Deprecated.since 9.0 - the method does nothingprotected void
Ensure that a zero duration is considered positiveint
signum()
Return the signum of the valueprotected static int
Parse a simple unsigned integersubtract
(DurationValue other) Subtract two durationsMethods inherited from class net.sf.saxon.value.AtomicValue
asAtomic, checkPermittedContents, effectiveBooleanValue, getCardinality, getItemType, getLength, getStringValue, getStringValueCS, getTypedValue, getTypeLabel, isIdentical, isNaN, itemAt, iterate, process, setTypeLabel, subsequence, toString
Methods inherited from class net.sf.saxon.value.Value
asItem, asItem, asIterator, asValue, convertToJava, fromItem, getCanonicalLexicalRepresentation, getIterator, getSequenceLength, reduce
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Field Details
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negative
protected boolean negative -
months
protected int months -
seconds
protected long seconds -
microseconds
protected int microseconds
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Constructor Details
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DurationValue
protected DurationValue()Private constructor for internal use -
DurationValue
public DurationValue(boolean positive, int years, int months, int days, int hours, int minutes, long seconds, int microseconds) throws IllegalArgumentException Constructor for xs:duration taking the components of the duration. There is no requirement that the values are normalized, for example it is acceptable to specify months=18. The values of the individual components must all be non-negative.- Parameters:
positive
- true if the duration is positive, false if negative. For a negative duration the components are all supplied as positive integers (or zero).years
- the number of yearsmonths
- the number of monthsdays
- the number of dayshours
- the number of hoursminutes
- the number of minutesseconds
- the number of secondsmicroseconds
- the number of microseconds- Throws:
IllegalArgumentException
- if the size of the duration exceeds implementation-defined limits: specifically, if the total number of months exceeds 2^31, or if the total number of seconds exceeds 2^63.
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DurationValue
public DurationValue(boolean positive, int years, int months, int days, int hours, int minutes, long seconds, int microseconds, AtomicType type) Constructor for xs:duration taking the components of the duration, plus a user-specified type which must be a subtype of xs:duration. There is no requirement that the values are normalized, for example it is acceptable to specify months=18. The values of the individual components must all be non-negative.- Parameters:
positive
- true if the duration is positive, false if negative. For a negative duration the components are all supplied as positive integers (or zero).years
- the number of yearsmonths
- the number of monthsdays
- the number of dayshours
- the number of hoursminutes
- the number of minutesseconds
- the number of seconds (long to allow copying)microseconds
- the number of microsecondstype
- the user-defined subtype of xs:duration. Note that this constructor cannot be used to create an instance of xs:dayTimeDuration or xs:yearMonthDuration.- Throws:
IllegalArgumentException
- if the size of the duration exceeds implementation-defined limits: specifically, if the total number of months exceeds 2^31, or if the total number of seconds exceeds 2^63.
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Method Details
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normalizeZeroDuration
protected void normalizeZeroDuration()Ensure that a zero duration is considered positive -
makeDuration
Static factory method: create a duration value from a supplied string, in ISO 8601 format [-]PnYnMnDTnHnMnS- Parameters:
s
- a string in the lexical space of xs:duration- Returns:
- the constructed xs:duration value, or a
ValidationFailure
if the supplied string is lexically invalid.
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makeDuration
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badDuration
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simpleInteger
Parse a simple unsigned integer- Parameters:
s
- the string containing the sequence of digits. No sign or whitespace is allowed.- Returns:
- the integer. Return -1 if the string is not a sequence of digits or exceeds 2^31
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copyAsSubType
Create a copy of this atomic value, with a different type label- Specified by:
copyAsSubType
in classAtomicValue
- Parameters:
typeLabel
- the type label of the new copy. The caller is responsible for checking that the value actually conforms to this type.- Returns:
- the copied value
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getPrimitiveType
Determine the primitive type of the value. This delivers the same answer as getItemType().getPrimitiveItemType(). The primitive types are the 19 primitive types of XML Schema, plus xs:integer, xs:dayTimeDuration and xs:yearMonthDuration, and xs:untypedAtomic. For external objects, the result is AnyAtomicType.- Specified by:
getPrimitiveType
in classAtomicValue
- Returns:
- the primitive type
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normalizeDuration
Deprecated.since 9.0 - the method does nothingNormalize the duration, so that monthsinvalid input: '<'12, hoursinvalid input: '<'24, minutesinvalid input: '<'60, secondsinvalid input: '<'60. Since durations are now always normalized, this method has become a no-op, but is retained for backwards compatibility- Returns:
- the duration unchanged
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signum
public int signum()Return the signum of the value- Returns:
- -1 if the duration is negative, zero if it is zero-length, +1 if it is positive
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getYears
public int getYears()Get the year component- Returns:
- the number of years in the normalized duration; always positive
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getMonths
public int getMonths()Get the months component- Returns:
- the number of months in the normalized duration; always positive, in the range 0-11
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getDays
public int getDays()Get the days component- Returns:
- the number of days in the normalized duration; always positive
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getHours
public int getHours()Get the hours component- Returns:
- the number of hours in the normalized duration; always positive, in the range 0-23
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getMinutes
public int getMinutes()Get the minutes component- Returns:
- the number of minutes in the normalized duration; always positive, in the range 0-59
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getSeconds
public int getSeconds()Get the seconds component- Returns:
- the number of whole seconds in the normalized duration; always positive, in the range 0-59
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getMicroseconds
public int getMicroseconds()Get the microseconds component- Returns:
- the number of microseconds in the normalized duration; always positive, in the range 0-999999
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getTotalMonths
public int getTotalMonths()Get the total number of months (ignoring the days/hours/minutes/seconds)- Returns:
- the total number of months, that is (getYears()*12) + getMonths(), as a positive or negative number according as the duration is positive or negative
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getTotalSeconds
Get the total number of seconds (ignoring the years/months)- Returns:
- the total number of seconds, as a positive or negative number according as the duration is positive or negative
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getPrimitiveStringValue
Convert to string- Specified by:
getPrimitiveStringValue
in classAtomicValue
- Returns:
- ISO 8601 representation.
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getLengthInSeconds
public double getLengthInSeconds()Get length of duration in seconds, assuming an average length of month. (Note, this defines a total ordering on durations which is different from the partial order defined in XML Schema; XPath 2.0 currently avoids defining an ordering at all. But the ordering here is consistent with the ordering of the two duration subtypes in XPath 2.0.)- Returns:
- the duration in seconds, as a double
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getComponent
Get a component of the normalized value- Overrides:
getComponent
in classAtomicValue
- Parameters:
component
- identifies the required component, as a constant defined in classComponent
, for exampleComponent.HOURS
- Returns:
- the value of the requested component of this value
- Throws:
XPathException
- if a dynamic error occurs
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getXPathComparable
Get an object value that implements the XPath equality and ordering comparison semantics for this value. If the ordered parameter is set to true, the result will be a Comparable and will support a compareTo() method with the semantics of the XPath lt/gt operator, provided that the other operand is also obtained using the getXPathComparable() method. In all cases the result will support equals() and hashCode() methods that support the semantics of the XPath eq operator, again provided that the other operand is also obtained using the getXPathComparable() method. A context argument is supplied for use in cases where the comparison semantics are context-sensitive, for example where they depend on the implicit timezone or the default collation.- Specified by:
getXPathComparable
in classAtomicValue
- Parameters:
ordered
- true if an ordered comparison is required. In this case the result is null if the type is unordered; in other cases the returned value will be a Comparable.collator
- collation used for comparing string valuescontext
- the XPath dynamic evaluation context, used in cases where the comparison is context sensitive @return an Object whose equals() and hashCode() methods implement the XPath comparison semantics- Returns:
- an Object whose equals() and hashCode() methods implement the XPath comparison semantics with respect to this atomic value. If ordered is specified, the result will either be null if no ordering is defined, or will be a Comparable
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equals
Test if the two durations are of equal length.- Specified by:
equals
in classAtomicValue
- Parameters:
other
- the other value- Returns:
- true if the other operand is an atomic value and the two values are equal as defined by the XPath eq operator
- Throws:
ClassCastException
- if the other value is not an xs:duration or subtype thereof
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hashCode
public int hashCode()- Overrides:
hashCode
in classValue<AtomicValue>
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add
Add two durations- Parameters:
other
- the duration to be added to this one- Returns:
- the sum of the two durations
- Throws:
XPathException
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subtract
Subtract two durations- Parameters:
other
- the duration to be subtracted from this one- Returns:
- the difference of the two durations
- Throws:
XPathException
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negate
Negate a duration (same as subtracting from zero, but it preserves the type of the original duration)- Returns:
- the original duration with its sign reversed, retaining its type
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multiply
Multiply a duration by a number- Parameters:
factor
- the number to multiply by- Returns:
- the result of the multiplication
- Throws:
XPathException
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divide
Divide a duration by a another duration- Parameters:
other
- the duration to divide by- Returns:
- the result of the division
- Throws:
XPathException
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getSchemaComparable
Get a Comparable value that implements the XML Schema ordering comparison semantics for this value. This implementation handles the ordering rules for durations in XML Schema. It is overridden for the two subtypes DayTimeDuration and YearMonthDuration.- Specified by:
getSchemaComparable
in classAtomicValue
- Returns:
- a suitable Comparable
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getSchemaComparable
Get a Comparable value that implements the XML Schema ordering comparison semantics for this value. This implementation handles the ordering rules for durations in XML Schema.- Parameters:
value
- the duration for which a comparison key is required- Returns:
- a suitable Comparable
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