Class CurrentOutputUri
- All Implemented Interfaces:
Callable
,FunctionItem
,GroundedValue
,Item
,Sequence
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionbindContext
(XPathContext context) Bind context information to appear as part of the function's closure.call
(XPathContext context, Sequence[] arguments) Call the Callable.evaluateItem
(XPathContext context) Evaluate in a general contextint
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, getContextNode, getDescription, getDetails, getElaborator, getErrorCodeForTypeErrors, getFunctionItemType, getFunctionName, getIntegerBounds, getNetCost, getOperandRoles, getRequiredType, getResultItemType, getResultItemType, getRetainedStaticContext, getStaticBaseUriString, getStreamerName, getUniStringArg, hashCode, importAttributes, isSequenceVariadic, isTrustedResultType, makeCall, makeFunction, makeFunction40, makeFunctionCall, makeOptimizedFunctionCall, resultIfEmpty, setArity, setDetails, setRetainedStaticContext, supplyTypeInformation, toShortString, toString, typeCheckCaller
Methods inherited from class net.sf.saxon.functions.AbstractFunction
atomize, deepEqual40, deepEquals, effectiveBooleanValue, getAnnotations, getUnicodeStringValue, isArray, isMap, makeNewContext, simplify, typeCheck
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
Methods inherited from interface net.sf.saxon.om.FunctionItem
getGenre
Methods inherited from interface net.sf.saxon.om.GroundedValue
asIterable, concatenate, containsNode, materialize
Methods inherited from interface net.sf.saxon.om.Item
getLength, getStringValue, head, isStreamed, itemAt, iterate, reduce, subsequence
Methods inherited from interface net.sf.saxon.om.Sequence
makeRepeatable
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Constructor Details
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CurrentOutputUri
public CurrentOutputUri()
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Method Details
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getSpecialProperties
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 classSystemFunction
- Parameters:
arguments
- the actual arguments to the function call- Returns:
- the properties
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bindContext
Description copied from class:ContextAccessorFunction
Bind context information to appear as part of the function's closure. If this method has been called, the supplied context will be used in preference to the context at the point where the function is actually called.- Specified by:
bindContext
in classContextAccessorFunction
- Parameters:
context
- the context to which the function applies. Must not be null.
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evaluateItem
Evaluate in a general context- Throws:
XPathException
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call
Call the Callable.- Specified by:
call
in interfaceCallable
- Overrides:
call
in classContextAccessorFunction
- Parameters:
context
- the dynamic evaluation contextarguments
- 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
orAtomicValue
.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
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