Package net.sf.saxon.value
Class AnyURIValue
- java.lang.Object
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- net.sf.saxon.value.Value
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- net.sf.saxon.value.AtomicValue
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- net.sf.saxon.value.StringValue
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- net.sf.saxon.value.AnyURIValue
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- All Implemented Interfaces:
java.io.Serializable
,Expression
,Item
,ValueRepresentation
public final class AnyURIValue extends StringValue
An XPath value of type xs:anyURI.This is implemented as a subtype of StringValue even though xs:anyURI is not a subtype of xs:string in the XPath type hierarchy. This enables type promotion from URI to String to happen automatically in most cases where it is appropriate.
This implementation of xs:anyURI allows any string to be contained in the value space. It is possible to validate that the string is a "valid URI" in the sense of XML Schema Part 2 (which refers to the XLink specification and to RFC 2396); however, this validation is optional, and is not carried out by default. In particular, there is no constraint that namespace URIs, collation URIs, and the like should be valid URIs. However, casting from strings to xs:anyURI does invoke validation.
- See Also:
- Serialized Form
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Nested Class Summary
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Nested classes/interfaces inherited from class net.sf.saxon.value.StringValue
StringValue.CharacterIterator
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Field Summary
Fields Modifier and Type Field Description static AnyURIValue
EMPTY_URI
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Fields inherited from class net.sf.saxon.value.StringValue
EMPTY_STRING, FALSE, length, SINGLE_SPACE, TRUE, value
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Fields inherited from class net.sf.saxon.value.Value
EMPTY_CLASS_ARRAY
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Fields inherited from interface net.sf.saxon.expr.Expression
EVALUATE_METHOD, ITERATE_METHOD, PROCESS_METHOD
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Fields inherited from interface net.sf.saxon.om.ValueRepresentation
EMPTY_VALUE_ARRAY
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Constructor Summary
Constructors Constructor Description AnyURIValue(java.lang.CharSequence value)
Constructor
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description AtomicValue
convertPrimitive(BuiltInAtomicType requiredType, boolean validate, XPathContext context)
Convert to target data typejava.lang.Object
convertToJava(java.lang.Class target, XPathContext context)
Convert to Java object (for passing to external functions)boolean
equals(java.lang.Object other)
Determine if two AnyURIValues are equal, according to XML Schema rules.ItemType
getItemType(TypeHierarchy th)
Return the type of the expressionstatic boolean
isValidURI(java.lang.CharSequence value)
Check whether a string consititutes a valid URI-
Methods inherited from class net.sf.saxon.value.StringValue
codepointEquals, containsSurrogatePairs, contract, convertStringToAtomicType, convertStringToBuiltInType, effectiveBooleanValue, expand, expand, getStringLength, getStringLength, getStringValue, getStringValueCS, hashCode, isZeroLength, iterateCharacters, makeStringValue, toString
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Methods inherited from class net.sf.saxon.value.AtomicValue
checkPermittedContents, convert, convert, display, evaluateAsString, evaluateItem, getCardinality, getComponent, getImplementationMethod, getLength, getPrimitiveValue, getTypedValue, hasBuiltInType, iterate, process
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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 Detail
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EMPTY_URI
public static final AnyURIValue EMPTY_URI
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Method Detail
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isValidURI
public static boolean isValidURI(java.lang.CharSequence value)
Check whether a string consititutes a valid URI
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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
- integer code representing the item type requiredcontext
-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.- Returns:
- the result of the conversion, or an ErrorValue
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getItemType
public ItemType getItemType(TypeHierarchy th)
Return the type of the expression- Specified by:
getItemType
in interfaceExpression
- Overrides:
getItemType
in classStringValue
- Parameters:
th
-- Returns:
- Type.ANY_URI_TYPE (always)
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equals
public boolean equals(java.lang.Object other)
Determine if two AnyURIValues are equal, according to XML Schema rules. (This method is not used for XPath comparisons, which are always under the control of a collation.)- Overrides:
equals
in classStringValue
- Throws:
java.lang.ClassCastException
- if the values are not comparable
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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 classStringValue
- Parameters:
target
- the Java class to which conversion is required- Returns:
- the result of the conversion
- Throws:
XPathException
- if conversion to this target type is not possible
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