java.lang.Object
- net.sf.saxon.value.Value
- - net.sf.saxon.value.AtomicValue
  - - net.sf.saxon.value.DurationValue

All Implemented Interfaces:

java.io.Serializable, Expression, Item, ValueRepresentation

Direct Known Subclasses:

MonthDurationValue, SecondsDurationValue
```
public class DurationValue
extends AtomicValue
```
A value of type xs:duration

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type	Field	Description
`protected int`	`days`
`protected int`	`hours`
`protected int`	`microseconds`
`protected int`	`minutes`
`protected int`	`months`
`protected boolean`	`negative`
`protected boolean`	`normalized`
`protected int`	`seconds`
`protected int`	`years`

Fields inherited from class net.sf.saxon.value.Value
EMPTY_CLASS_ARRAY

Fields inherited from interface net.sf.saxon.expr.Expression
EVALUATE_METHOD, ITERATE_METHOD, PROCESS_METHOD

Fields inherited from interface net.sf.saxon.om.ValueRepresentation
EMPTY_VALUE_ARRAY

Constructor Summary

Constructors
Modifier	Constructor	Description
`protected`	`DurationValue()`	Private constructor for internal use
	`DurationValue(boolean positive, int years, int months, int days, int hours, int minutes, int seconds, int microseconds)`
	`DurationValue(java.lang.CharSequence s)`	Constructor: create a duration value from a supplied string, in ISO 8601 format [-]PnYnMnDTnHnMnS

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`DurationValue`	`add(DurationValue other)`	Add two durations
`protected void`	`badDuration(java.lang.String msg, java.lang.CharSequence s)`
`AtomicValue`	`convertPrimitive(BuiltInAtomicType requiredType, boolean validate, XPathContext context)`	Convert to target data type
`java.lang.Object`	`convertToJava(java.lang.Class target, XPathContext context)`	Convert to Java object (for passing to external functions)
`DecimalValue`	`divide(DurationValue other)`	Divide a duration by a another duration
`boolean`	`equals(java.lang.Object other)`	Test if the two durations are of equal length.
`AtomicValue`	`getComponent(int component)`	Get a component of the normalized value
`ItemType`	`getItemType(TypeHierarchy th)`	Determine the data type of the exprssion
`double`	`getLengthInSeconds()`	Get length of duration in seconds, assuming an average length of month.
`java.lang.String`	`getStringValue()`	Convert the value to a string, using the serialization rules.
`java.lang.CharSequence`	`getStringValueCS()`	Convert to string
`int`	`hashCode()`	Return a hash code to support the equals() function
`DurationValue`	`multiply(double factor)`	Multiply a duration by a number
`DurationValue`	`negate()`	Negate a duration (same as subtracting from zero, but it preserves the type of the original duration)
`DurationValue`	`normalizeDuration()`	Normalize the duration, so that months<12, hours<24, minutes<60, seconds<60.
`protected void`	`normalizeZeroDuration()`
`int`	`signum()`	Return the signum of the value
`DurationValue`	`subtract(DurationValue other)`	Subtract two durations

Methods inherited from class net.sf.saxon.value.AtomicValue
checkPermittedContents, convert, convert, display, effectiveBooleanValue, evaluateAsString, evaluateItem, getCardinality, getImplementationMethod, getLength, getPrimitiveValue, getTypedValue, hasBuiltInType, iterate, process, toString

Methods inherited from class net.sf.saxon.value.Value
asItem, asIterator, asValue, convert, convertJavaObjectToXPath, getDependencies, getIterator, getParentExpression, getSpecialProperties, itemAt, iterateSubExpressions, makeQNameValue, optimize, promote, reduce, simplify, stringToNumber, typeCheck

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Field Detail
  - negative
```
protected boolean negative
```
  - years
```
protected int years
```
  - months
```
protected int months
```
  - days
```
protected int days
```
  - hours
```
protected int hours
```
  - minutes
```
protected int minutes
```
  - seconds
```
protected int seconds
```
  - microseconds
```
protected int microseconds
```
  - normalized
```
protected boolean normalized
```
- Constructor Detail
  - DurationValue
```
protected DurationValue()
```
    Private constructor for internal use
  - DurationValue
```
public DurationValue(boolean positive,
                     int years,
                     int months,
                     int days,
                     int hours,
                     int minutes,
                     int seconds,
                     int microseconds)
```
  - DurationValue
```
public DurationValue(java.lang.CharSequence s)
              throws XPathException
```
    Constructor: create a duration value from a supplied string, in ISO 8601 format [-]PnYnMnDTnHnMnS
    
    Throws:
    
    XPathException
- Method Detail
  - normalizeZeroDuration
```
protected void normalizeZeroDuration()
```
  - badDuration
```
protected void badDuration(java.lang.String msg,
                           java.lang.CharSequence s)
                    throws XPathException
```
    Throws:
    
    XPathException
  - convertPrimitive
```
public AtomicValue convertPrimitive(BuiltInAtomicType requiredType,
                                    boolean validate,
                                    XPathContext context)
```
    Convert to target data type
    
    Specified by:
    
    convertPrimitive in class AtomicValue
    
    Parameters:
    
    requiredType - an integer identifying the required atomic type
    
    validate - if set to false, the caller asserts that the value is known to be valid
    
    context -
    
    Returns:
    
    an AtomicValue, a value of the required type; or a ValidationErrorValue if the value cannot be converted.
  - normalizeDuration
```
public DurationValue normalizeDuration()
```
    Normalize the duration, so that months<12, hours<24, minutes<60, seconds<60. At present we do this when converting to a string. It's possible that it should be done immediately on constructing the duration (so that component extraction functions get the normalized value). We're awaiting clarification of the spec (bugzilla 3369)
    
    Returns:
    
    a new, normalized duration
  - 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
  - getStringValue
```
public java.lang.String getStringValue()
```
    Convert the value to a string, using the serialization rules. For atomic values this is the same as a cast; for sequence values it gives a space-separated list. This method is refined for AtomicValues so that it never throws an Exception.
    
    Specified by:
    
    getStringValue in interface Item
    
    Specified by:
    
    getStringValue in interface ValueRepresentation
    
    Specified by:
    
    getStringValue in class AtomicValue
    
    Returns:
    
    the string value of the item
    
    See Also:
    
    Item.getStringValueCS()
  - getStringValueCS
```
public java.lang.CharSequence getStringValueCS()
```
    Convert to string
    
    Specified by:
    
    getStringValueCS in interface Item
    
    Specified by:
    
    getStringValueCS in interface ValueRepresentation
    
    Overrides:
    
    getStringValueCS in class AtomicValue
    
    Returns:
    
    ISO 8601 representation.
    
    See Also:
    
    Item.getStringValue()
  - 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.)
  - getItemType
```
public ItemType getItemType(TypeHierarchy th)
```
    Determine the data type of the exprssion
    
    Specified by:
    
    getItemType in interface Expression
    
    Overrides:
    
    getItemType in class Value
    
    Parameters:
    
    th -
    
    Returns:
    
    Type.DURATION,
  - convertToJava
```
public java.lang.Object convertToJava(java.lang.Class target,
                                      XPathContext context)
                               throws XPathException
```
    Convert to Java object (for passing to external functions)
    
    Overrides:
    
    convertToJava in class Value
    
    Throws:
    
    XPathException
  - getComponent
```
public AtomicValue getComponent(int component)
                         throws XPathException
```
    Get a component of the normalized value
    
    Overrides:
    
    getComponent in class AtomicValue
    
    Throws:
    
    XPathException
  - equals
```
public boolean equals(java.lang.Object other)
```
    Test if the two durations are of equal length. Note: this function is defined in XPath 2.0, but its semantics are currently unclear.
    
    Overrides:
    
    equals in class Value
    
    Throws:
    
    java.lang.ClassCastException - if the other value is not an xs:duration or subtype thereof
  - hashCode
```
public int hashCode()
```
    Description copied from class: Value
    
    Return a hash code to support the equals() function
    
    Overrides:
    
    hashCode in class Value
  - add
```
public DurationValue add(DurationValue other)
                  throws XPathException
```
    Add two durations
    
    Throws:
    
    XPathException
  - subtract
```
public DurationValue subtract(DurationValue other)
                       throws XPathException
```
    Subtract two durations
    
    Throws:
    
    XPathException
  - negate
```
public DurationValue negate()
```
    Negate a duration (same as subtracting from zero, but it preserves the type of the original duration)
  - multiply
```
public DurationValue multiply(double factor)
                       throws XPathException
```
    Multiply a duration by a number
    
    Throws:
    
    XPathException
  - divide
```
public DecimalValue divide(DurationValue other)
                    throws XPathException
```
    Divide a duration by a another duration
    
    Throws:
    
    XPathException

Class DurationValue

Field Summary

Fields inherited from class net.sf.saxon.value.Value

Fields inherited from interface net.sf.saxon.expr.Expression

Fields inherited from interface net.sf.saxon.om.ValueRepresentation

Constructor Summary

Method Summary

Methods inherited from class net.sf.saxon.value.AtomicValue

Methods inherited from class net.sf.saxon.value.Value

Methods inherited from class java.lang.Object

Field Detail

negative

years

months

days

hours

minutes

seconds

microseconds

normalized

Constructor Detail

DurationValue

DurationValue

DurationValue

Method Detail

normalizeZeroDuration

badDuration

convertPrimitive

normalizeDuration

signum

getStringValue

getStringValueCS

getLengthInSeconds

getItemType

convertToJava

getComponent

equals

hashCode

add

subtract

negate

multiply

divide