public class Error extends SystemFunction implements Callable
Constructor and Description |
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Error() |
Modifier and Type | Method and Description |
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Sequence |
call(XPathContext context,
Sequence[] arguments)
Call the Callable.
|
Item |
error(XPathContext context,
QNameValue errorCode,
StringValue desc,
SequenceIterator errObject) |
int |
getSpecialProperties(Expression[] arguments)
Determine the special properties of this function.
|
boolean |
isVacuousExpression()
Determine whether this is a vacuous expression as defined in the XQuery update specification
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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, typeCheckCaller
atomize, deepEquals, effectiveBooleanValue, getAnnotations, getStringValue, getStringValueCS, isArray, isMap, makeNewContext, simplify, typeCheck
getLength, head, isStreamed, itemAt, iterate, reduce, subsequence
clone, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
getLength, head, itemAt, reduce, subsequence
public int getSpecialProperties(Expression[] arguments)
SystemFunction
getSpecialProperties
in class SystemFunction
arguments
- the actual arguments supplied in a call to the functionpublic boolean isVacuousExpression()
public Item error(XPathContext context, QNameValue errorCode, StringValue desc, SequenceIterator errObject) throws XPathException
XPathException
public Sequence call(XPathContext context, Sequence[] arguments) throws XPathException
Callable
call
in interface Callable
call
in interface Function
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 method
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.
XPathException
- if a dynamic error occurs during the evaluation of the expressionCopyright (c) 2004-2018 Saxonica Limited. All rights reserved.