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java.lang.Objectnet.sf.saxon.value.Value
net.sf.saxon.value.AtomicValue
net.sf.saxon.value.NumericValue
net.sf.saxon.value.FloatValue
public final class FloatValue
A numeric (single precision floating point) value
Field Summary | |
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(package private) static java.util.regex.Pattern |
roundablePattern
Regex indicating that a number may be worth rounding |
Fields inherited from class net.sf.saxon.value.Value |
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EMPTY_CLASS_ARRAY |
Fields inherited from interface net.sf.saxon.om.ValueRepresentation |
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EMPTY_VALUE_ARRAY |
Fields inherited from interface net.sf.saxon.expr.Expression |
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EVALUATE_METHOD, ITERATE_METHOD, PROCESS_METHOD |
Constructor Summary | |
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FloatValue(java.lang.CharSequence val)
Constructor supplying a string |
|
FloatValue(float value)
Constructor supplying a float |
Method Summary | |
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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 |
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) |
boolean |
effectiveBooleanValue(XPathContext context)
Get the effective boolean value |
(package private) static java.lang.CharSequence |
floatToString(float value)
Internal method used for conversion of a float to a string |
(package private) static java.lang.CharSequence |
floatToStringOLD(float value,
java.lang.String javaString)
Internal method used for conversion of a float to a string |
NumericValue |
floor()
Implement the XPath floor() function |
double |
getDoubleValue()
Get the numeric value as a double |
float |
getFloatValue()
Get the value |
ItemType |
getItemType(TypeHierarchy th)
Determine the data type of the expression |
java.lang.String |
getStringValue()
Get the value as a String |
java.lang.CharSequence |
getStringValueCS()
Get the value as a String |
int |
hashCode()
Get the hashCode. |
boolean |
isNaN()
Test whether the value is the double/float value NaN |
boolean |
isWholeNumber()
Determine whether the value is a whole number, that is, whether it compares equal to some integer |
NumericValue |
negate()
Negate the value |
NumericValue |
round()
Implement the XPath round() function |
NumericValue |
roundToHalfEven(int scale)
Implement the XPath round-to-half-even() function |
boolean |
schemaEquals(Value obj)
Compare two values for equality. |
double |
signum()
Determine whether the value is negative, zero, or positive |
Methods inherited from class net.sf.saxon.value.NumericValue |
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equals, isInteger, longValue, parseNumber, promote, toString |
Methods inherited from class net.sf.saxon.value.AtomicValue |
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checkPermittedContents, convert, convert, display, evaluateAsString, evaluateItem, getCardinality, getComponent, getImplementationMethod, getLength, getPrimitiveValue, getTypedValue, hasBuiltInType, iterate, process |
Methods inherited from class net.sf.saxon.value.Value |
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asItem, asIterator, asValue, collapseWhitespace, convert, convertJavaObjectToXPath, getDependencies, getIterator, getParentExpression, getSpecialProperties, itemAt, iterateSubExpressions, makeQNameValue, normalizeWhitespace, optimize, promote, reduce, simplify, stringToNumber, trimWhitespace, typeCheck |
Methods inherited from class java.lang.Object |
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clone, finalize, getClass, notify, notifyAll, wait, wait, wait |
Field Detail |
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static java.util.regex.Pattern roundablePattern
Constructor Detail |
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public FloatValue(java.lang.CharSequence val) throws DynamicError
DynamicError
public FloatValue(float value)
value
- the value of the floatMethod Detail |
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public float getFloatValue()
public double getDoubleValue()
NumericValue
getDoubleValue
in class NumericValue
public int hashCode()
hashCode
in class NumericValue
NumericValue.hashCode()
public boolean isNaN()
isNaN
in class NumericValue
public boolean effectiveBooleanValue(XPathContext context)
effectiveBooleanValue
in interface Expression
effectiveBooleanValue
in class AtomicValue
context
-
public AtomicValue convertPrimitive(BuiltInAtomicType requiredType, boolean validate, XPathContext context)
convertPrimitive
in class AtomicValue
requiredType
- an integer identifying the required atomic typecontext
- validate
- true if validation is required. If set to false, the caller guarantees that
the value is valid for the target data type, and that further validation is therefore not required.
Note that a validation failure may be reported even if validation was not requested.
public java.lang.String getStringValue()
getStringValue
in interface Item
getStringValue
in interface ValueRepresentation
getStringValue
in class AtomicValue
Item.getStringValueCS()
public java.lang.CharSequence getStringValueCS()
getStringValueCS
in interface Item
getStringValueCS
in class AtomicValue
Item.getStringValue()
static java.lang.CharSequence floatToString(float value)
value
- the actual value
static java.lang.CharSequence floatToStringOLD(float value, java.lang.String javaString)
value
- the actual valuejavaString
- the result of converting the float to a string using the Java conventions.
This value is adjusted as necessary to cater for the differences between the Java and XPath rules.
public ItemType getItemType(TypeHierarchy th)
getItemType
in interface Expression
getItemType
in class Value
th
-
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
- the decimal position for rounding: e.g. 2 rounds to a
multiple of 0.01, while -2 rounds to a multiple of 100
public double signum()
signum
in class NumericValue
public boolean isWholeNumber()
isWholeNumber
in class NumericValue
public NumericValue arithmetic(int operator, NumericValue other, XPathContext context) throws XPathException
arithmetic
in class NumericValue
operator
- the binary arithmetic operation to be performed. Uses
the constants defined in the Tokenizer classother
- the other operand
XPathException
- if an arithmetic error occursTokenizer
public int compareTo(java.lang.Object other)
NumericValue
compareTo
in interface java.lang.Comparable
compareTo
in class NumericValue
other
- The other numeric value
public boolean schemaEquals(Value obj)
schemaEquals
in class AtomicValue
public java.lang.Object convertToJava(java.lang.Class target, XPathContext context) throws XPathException
convertToJava
in class Value
XPathException
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