Package com.saxonica.functions.qt4
Class ItemsStarting
java.lang.Object
net.sf.saxon.functions.AbstractFunction
net.sf.saxon.functions.SystemFunction
com.saxonica.functions.qt4.ItemsStarting
- All Implemented Interfaces:
Callable
,FunctionItem
,GroundedValue
,Item
,Sequence
- Direct Known Subclasses:
ItemsStarting.ItemsAfter
,ItemsStarting.ItemsFrom
This class supports the two extension functions saxon:items-from and saxon:items-after,
also available as experimental XPath 4.0 functions in the fn namespace.
These functions take two arguments: the first is a sequence of items, the second is a
function used as a predicate to determine the first item to be included in the result.
The functions differ in whether the matching item is included in the result or not.
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Nested Class Summary
Nested ClassesModifier and TypeClassDescriptionstatic class
static class
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptioncall
(XPathContext context, Sequence[] arguments) Evaluate this function call at run-timeprotected abstract boolean
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, getSpecialProperties, 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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ItemsStarting
public ItemsStarting()
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Method Details
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includeMatchingItem
protected abstract boolean includeMatchingItem() -
call
Evaluate this function call at run-time- Parameters:
context
- The XPath dynamic evaluation contextarguments
- The values of the arguments to the function call.- Returns:
- the results of the function, as a sequence of arrays
- Throws:
XPathException
- if a dynamic error occurs during evaluation of the function. The Saxon run-time code will add information about the error location.
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