public class Subsequence_3 extends SystemFunction implements Callable
| Constructor and Description |
|---|
Subsequence_3() |
| Modifier and Type | Method and Description |
|---|---|
Sequence |
call(XPathContext context,
Sequence[] arguments)
Call the function
|
int |
getSpecialProperties(Expression[] arguments)
Get the static properties of this expression (other than its type).
|
java.lang.String |
getStreamerName()
Get a name that identifies the class that can be used to evaluate this function
in streaming mode, that is, supplying one item or event at a time as it is
delivered by the parser.
|
static SequenceIterator |
subSequence(SequenceIterator seq,
NumericValue startVal,
NumericValue lengthVal,
XPathContext context) |
dependsOnContextItem, dynamicCall, equals, export, exportAdditionalArguments, exportAttributes, fixArguments, getArity, getCardinality, getCompilerName, getContextNode, getDescription, getDetails, getErrorCodeForTypeErrors, getFunctionItemType, getFunctionName, getIntegerBounds, getNetCost, getOperandRoles, getRequiredType, getResultItemType, getResultItemType, getRetainedStaticContext, getStaticBaseUriString, importAttributes, isTrustedResultType, makeCall, makeFunction, makeFunctionCall, makeOptimizedFunctionCall, resultIfEmpty, setArity, setDetails, setRetainedStaticContext, supplyTypeInformation, typeCheckCalleratomize, deepEquals, effectiveBooleanValue, getAnnotations, getStringValue, getStringValueCS, isArray, isMap, makeNewContext, simplify, typeCheckgetLength, head, isStreamed, itemAt, iterate, reduce, subsequenceclone, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitgetLength, head, itemAt, reduce, subsequencepublic int getSpecialProperties(Expression[] arguments)
getSpecialProperties in class SystemFunctionarguments - the actual arguments to the function callpublic Sequence call(XPathContext context, Sequence[] arguments) throws XPathException
call in interface Callablecall in interface Functioncontext - 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 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.
XPathExceptionpublic static SequenceIterator subSequence(SequenceIterator seq, NumericValue startVal, NumericValue lengthVal, XPathContext context) throws XPathException
XPathExceptionpublic java.lang.String getStreamerName()
SystemFunctiongetStreamerName in class SystemFunctionStreamerMap. In non-streaming Saxon editions
(HE and PE) the method always returns null.Copyright (c) 2004-2018 Saxonica Limited. All rights reserved.