net.sf.saxon.functions

Class CurrentOutputUri

java.lang.Object

net.sf.saxon.functions.AbstractFunction

net.sf.saxon.functions.SystemFunction

net.sf.saxon.functions.CurrentOutputUri

All Implemented Interfaces:

java.lang.Iterable<Function>, Callable, Function, GroundedValue<Function>, Item<Function>, Sequence<Function>

public class CurrentOutputUri
extends SystemFunction
implements Callable

This class implements the XSLT 3.0 function current-output-uri()

Constructor Summary

Constructors

Constructor and Description
CurrentOutputUri()

Method Summary

Modifier and Type	Method and Description
ZeroOrOne<AnyURIValue>	call(XPathContext context, Sequence[] arguments) Call the Callable.
AnyURIValue	evaluateItem(XPathContext context) Evaluate in a general context
int	getSpecialProperties(Expression[] arguments) Determine the special properties of this function.

Methods inherited from class net.sf.saxon.functions.SystemFunction

dependsOnContextItem, dynamicCall, equals, export, exportAdditionalArguments, exportAttributes, fixArguments, getArity, getCardinality, getCompilerName, getContextNode, getDescription, getDetails, getErrorCodeForTypeErrors, getFunctionItemType, getFunctionName, getIntegerBounds, getNetCost, getOperandRoles, getRequiredType, getResultItemType, getResultItemType, getRetainedStaticContext, getStaticBaseUriString, getStreamerName, importAttributes, isTrustedResultType, makeCall, makeFunction, makeFunctionCall, makeOptimizedFunctionCall, resultIfEmpty, setArity, setDetails, setRetainedStaticContext, supplyTypeInformation, toShortString, toString, typeCheckCaller

Methods inherited from class net.sf.saxon.functions.AbstractFunction

atomize, deepEquals, effectiveBooleanValue, getAnnotations, getStringValue, getStringValueCS, isArray, isMap, makeNewContext, simplify, typeCheck

Methods inherited from class java.lang.Object

clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface net.sf.saxon.om.Function

argumentArray, getGenre

Methods inherited from interface net.sf.saxon.om.Item

getLength, head, isStreamed, itemAt, iterate, iterator, reduce, subsequence, toGroundedValue

Methods inherited from interface net.sf.saxon.om.GroundedValue

asIterable, materialize

Methods inherited from interface net.sf.saxon.om.Sequence

makeRepeatable

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

CurrentOutputUri

public CurrentOutputUri()

Method Detail

getSpecialProperties

public int getSpecialProperties(Expression[] arguments)

Determine the special properties of this function. The general rule is that a system function call is non-creative if its return type is atomic, or if all its arguments are non-creative. This is overridden for the generate-id() function, which is considered creative if its operand is creative (because the result depends on the identity of the operand)

Overrides:

getSpecialProperties in class SystemFunction

Parameters:

arguments - the actual arguments to the function call

evaluateItem

public AnyURIValue evaluateItem(XPathContext context)
                         throws XPathException

Evaluate in a general context

Throws:

XPathException

call

public ZeroOrOne<AnyURIValue> call(XPathContext context,
                                   Sequence[] arguments)
                            throws XPathException

Call the Callable.

Specified by:

call in interface Callable

Specified by:

call in interface Function

Parameters:

context - the dynamic evaluation context

arguments - the values of the arguments, supplied as Sequences.

Generally it is advisable, if calling iterate() to process a supplied sequence, to call it only once; if the value is required more than once, it should first be converted to a GroundedValue by calling the utility methd SequenceTool.toGroundedValue().

If the expected value is a single item, the item should be obtained by calling Sequence.head(): it cannot be assumed that the item will be passed as an instance of Item or AtomicValue.

It is the caller's responsibility to perform any type conversions required to convert arguments to the type expected by the callee. An exception is where this Callable is explicitly an argument-converting wrapper around the original Callable.

Returns:

the result of the evaluation, in the form of a Sequence. It is the responsibility of the callee to ensure that the type of result conforms to the expected result type.

Throws:

XPathException - if a dynamic error occurs during the evaluation of the expression