net.sf.saxon.value
public final class AnyURIValue extends StringValue
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.
Field Summary | |
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static AnyURIValue | EMPTY_URI |
Constructor Summary | |
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AnyURIValue(CharSequence value)
Constructor |
Method Summary | |
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AtomicValue | convertPrimitive(BuiltInAtomicType requiredType, boolean validate, XPathContext context)
Convert to target data type |
Object | convertToJava(Class target, XPathContext context)
Convert to Java object (for passing to external functions) |
boolean | equals(Object other)
Determine if two AnyURIValues are equal, according to XML Schema rules. |
ItemType | getItemType(TypeHierarchy th)
Return the type of the expression |
static boolean | isValidURI(CharSequence value)
Check whether a string consititutes a valid URI |
Parameters: value the String value. Null is taken as equivalent to "".
Parameters: requiredType integer code representing the item type required context
Returns: the result of the conversion, or an ErrorValue
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
Throws: ClassCastException if the values are not comparable
Parameters: th
Returns: Type.ANY_URI_TYPE (always)