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java.lang.Object | +--net.sf.saxon.value.Value | +--net.sf.saxon.value.AtomicValue | +--net.sf.saxon.value.NumericValue | +--net.sf.saxon.value.IntegerValue
An integer value: note this is a subtype of decimal in XML Schema, not a primitive type. This class also supports the built-in subtypes of xs:integer. Actually supports a value in the range permitted by a Java "long"
Field Summary | |
static IntegerValue |
MAX_LONG
IntegerValue representing the maximum value for this class |
static IntegerValue |
MIN_LONG
IntegerValue representing the minimum value for this class |
static IntegerValue |
MINUS_ONE
IntegerValue representing the value -1 |
static IntegerValue |
PLUS_ONE
IntegerValue representing the value +1 |
static IntegerValue |
ZERO
IntegerValue representing the value zero |
Fields inherited from interface net.sf.saxon.expr.Expression |
EVALUATE_METHOD, ITERATE_METHOD, PROCESS_METHOD |
Constructor Summary | |
IntegerValue(long value)
Constructor supplying a long |
|
IntegerValue(long val,
ItemType type)
Constructor for a subtype, supplying an integer |
Method Summary | |
NumericValue |
arithmetic(int operator,
NumericValue other,
XPathContext context)
Evaluate a binary arithmetic operator. |
NumericValue |
ceiling()
Implement the XPath ceiling() function |
int |
compareTo(java.lang.Object other)
Compare the value to another numeric value |
AtomicValue |
convert(int requiredType,
XPathContext context)
Convert to target data type |
java.lang.Object |
convertToJava(java.lang.Class target,
Configuration config,
XPathContext context)
Convert to Java object (for passing to external functions) |
boolean |
effectiveBooleanValue(XPathContext context)
Return the effective boolean value of this integer |
NumericValue |
floor()
Implement the XPath floor() function |
ItemType |
getItemType()
Determine the data type of the expression |
java.lang.String |
getStringValue()
Get the value as a String |
int |
hashCode()
Get the hashCode. |
boolean |
isWholeNumber()
Determine whether the value is a whole number, that is, whether it compares equal to some integer |
long |
longValue()
Get the value |
NumericValue |
negate()
Negate the value |
NumericValue |
round()
Implement the XPath round() function |
NumericValue |
roundToHalfEven(int scale)
Implement the XPath round-to-half-even() function |
void |
setSubType(ItemType type)
This class allows subtypes of xs:integer to be held, as well as xs:integer values. |
static NumericValue |
stringToInteger(java.lang.CharSequence s)
Static factory method to convert strings to integers. |
Methods inherited from class net.sf.saxon.value.NumericValue |
equals, getDoubleValue, isInteger, isNaN, parseNumber, promote, toString |
Methods inherited from class net.sf.saxon.value.AtomicValue |
convert, display, evaluateAsString, evaluateItem, getCardinality, getComponent, getImplementationMethod, getPrimitiveValue, getTypedValue, iterate, process |
Methods inherited from class net.sf.saxon.value.Value |
analyze, asItem, asValue, collapseWhitespace, convertJavaObjectToXPath, getDependencies, getParentExpression, getSpecialProperties, inverse, iterateSubExpressions, normalizeWhitespace, promote, simplify, stringToNumber, trimWhitespace |
Methods inherited from class java.lang.Object |
clone, finalize, getClass, notify, notifyAll, wait, wait, wait |
Field Detail |
public static final IntegerValue MINUS_ONE
public static final IntegerValue ZERO
public static final IntegerValue PLUS_ONE
public static final IntegerValue MAX_LONG
public static final IntegerValue MIN_LONG
Constructor Detail |
public IntegerValue(long value)
value
- the value of the IntegerValuepublic IntegerValue(long val, ItemType type) throws DynamicError
val
- The supplied value, as an integertype
- the required item type, a subtype of xs:integer
DynamicError
- if the supplied value is out of range for the
target typeMethod Detail |
public void setSubType(ItemType type) throws DynamicError
type
- the subtype of integer required
DynamicError
- if the value is out of range for this subtypepublic static NumericValue stringToInteger(java.lang.CharSequence s) throws DynamicError
s
- the String to be converted
DynamicError
- if it cannot be convertedpublic int hashCode()
hashCode
in class NumericValue
NumericValue.hashCode()
public long longValue()
longValue
in class NumericValue
public boolean effectiveBooleanValue(XPathContext context)
effectiveBooleanValue
in interface Expression
effectiveBooleanValue
in class AtomicValue
context
- The dynamic evaluation context; ignored in this
implementation of the method
public int compareTo(java.lang.Object other)
compareTo
in interface java.lang.Comparable
compareTo
in class NumericValue
other
- the numeric value to be compared to this value
public AtomicValue convert(int requiredType, XPathContext context) throws XPathException
convert
in class AtomicValue
requiredType
- an integer identifying the required atomic typecontext
- the evaluation context. Used primarily for error reporting,
since nearly all type conversions are context-independent. The value may be
null if the context is not known.
XPathException
- if the conversion is not possiblepublic java.lang.String getStringValue()
getStringValue
in interface Item
getStringValue
in class AtomicValue
public NumericValue negate()
negate
in class NumericValue
public NumericValue floor()
floor
in class NumericValue
public NumericValue ceiling()
ceiling
in class NumericValue
public NumericValue round()
round
in class NumericValue
public NumericValue roundToHalfEven(int scale)
roundToHalfEven
in class NumericValue
scale
- number of digits required after the decimal point; the
value -2 (for example) means round to a multiple of 100
public boolean isWholeNumber()
isWholeNumber
in class NumericValue
public NumericValue arithmetic(int operator, NumericValue other, XPathContext context) throws XPathException
arithmetic
in class NumericValue
operator
- the operator to be applied, identified by a constant in
the Tokenizer classother
- the other operand of the arithmetic expression
XPathException
- if an arithmetic failure occurs, e.g. divide
by zeroTokenizer
public ItemType getItemType()
public java.lang.Object convertToJava(java.lang.Class target, Configuration config, XPathContext context) throws XPathException
convertToJava
in class AtomicValue
target
- The Java class to which conversion is requiredconfig
- The configuration (needed for access to schema information)
XPathException
- if conversion is not possible, or fails
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