Package net.sf.saxon.value
Class UntypedAtomicValue
java.lang.Object
net.sf.saxon.value.Value
net.sf.saxon.value.AtomicValue
net.sf.saxon.value.StringValue
net.sf.saxon.value.UntypedAtomicValue
- All Implemented Interfaces:
Serializable
,Expression
,Item
,ValueRepresentation
An Untyped Atomic value. This inherits from StringValue for implementation convenience, even
though an untypedAtomic value is not a String in the data model type hierarchy.
- See Also:
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Nested Class Summary
Nested classes/interfaces inherited from class net.sf.saxon.value.StringValue
StringValue.CharacterIterator
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Field Summary
FieldsFields inherited from class net.sf.saxon.value.StringValue
EMPTY_STRING, FALSE, length, SINGLE_SPACE, TRUE, value
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
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionint
compareTo
(Object other, Comparator collator, XPathContext context) Compare an untypedAtomic value with another value, using a given collator to perform any string comparisons.convertPrimitive
(BuiltInAtomicType requiredType, boolean validate, XPathContext context) Convert to target data typeReturn the type of the expressionMethods inherited from class net.sf.saxon.value.StringValue
codepointEquals, containsSurrogatePairs, contract, convertStringToAtomicType, convertStringToBuiltInType, convertToJava, effectiveBooleanValue, equals, expand, expand, getStringLength, getStringLength, getStringValue, getStringValueCS, hashCode, isZeroLength, iterateCharacters, makeStringValue, toString
Methods inherited from class net.sf.saxon.value.AtomicValue
checkPermittedContents, convert, convert, display, evaluateAsString, evaluateItem, getCardinality, getComponent, getImplementationMethod, getLength, getPrimitiveValue, getTypedValue, hasBuiltInType, iterate, process
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
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Field Details
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ZERO_LENGTH_UNTYPED
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doubleValue
DoubleValue doubleValue
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Constructor Details
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UntypedAtomicValue
Constructor- Parameters:
value
- the String value. Null is taken as equivalent to "".
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Method Details
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getItemType
Return the type of the expression- Specified by:
getItemType
in interfaceExpression
- Overrides:
getItemType
in classStringValue
- Parameters:
th
-- Returns:
- Type.UNTYPED_ATOMIC (always)
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convertPrimitive
public AtomicValue convertPrimitive(BuiltInAtomicType requiredType, boolean validate, XPathContext context) Convert to target data type- Overrides:
convertPrimitive
in classStringValue
- Parameters:
requiredType
- type code of the required atomic typevalidate
- 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.context
-- Returns:
- the result of the conversion, if successful. If unsuccessful, the value returned will be a ValidationErrorValue. The caller must check for this condition. No exception is thrown, instead the exception will be encapsulated within the ErrorValue.
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compareTo
Compare an untypedAtomic value with another value, using a given collator to perform any string comparisons. This works by converting the untypedAtomic value to the type of the other operand, which is the correct behavior for operators like "=" and "!=", but not for "eq" and "ne": in the latter case, the untypedAtomic value is converted to a string and this method is therefore not used.- Returns:
- -1 if the this value is less than the other, 0 if they are equal, +1 if this value is greater.
- Throws:
ClassCastException
- if the value cannot be cast to the type of the other operand
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