Package net.sf.saxon.functions

Class PositionAndLast.Last

java.lang.Object

net.sf.saxon.functions.AbstractFunction

net.sf.saxon.functions.SystemFunction

net.sf.saxon.functions.ContextAccessorFunction

net.sf.saxon.functions.PositionAndLast

net.sf.saxon.functions.PositionAndLast.Last

All Implemented Interfaces:

Callable, FunctionItem, GroundedValue, Item, Sequence

Enclosing class:

PositionAndLast

public static class PositionAndLast.Last
extends PositionAndLast

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	PositionAndLast.Last.LastFnElaborator

Nested classes/interfaces inherited from class net.sf.saxon.functions.PositionAndLast

PositionAndLast.Last, PositionAndLast.Position

Constructor Summary

Constructors

Constructor	Description
Last()

Method Summary

Modifier and Type	Method	Description
Int64Value	evaluateItem(XPathContext c)	Evaluate in a general context
Elaborator	getElaborator()	Make an elaborator for a system function call on this function
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.

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

bindContext, call, getIntegerBounds, getNetCost, isContextPossiblyUndefined, supplyTypeInformation

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

dependsOnContextItem, dynamicCall, equals, export, exportAdditionalArguments, exportAttributes, fixArguments, getArity, getCardinality, getContextNode, getDescription, getDetails, getErrorCodeForTypeErrors, getFunctionItemType, getFunctionName, getOperandRoles, getRequiredType, getResultItemType, getResultItemType, getRetainedStaticContext, getSpecialProperties, getStaticBaseUriString, getUniStringArg, hashCode, importAttributes, isSequenceVariadic, isTrustedResultType, makeCall, makeFunction, makeFunction40, makeFunctionCall, makeOptimizedFunctionCall, resultIfEmpty, setArity, setDetails, setRetainedStaticContext, 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

Constructor Details

Last

public Last()

Method Details

evaluateItem

public Int64Value evaluateItem(XPathContext c)
                        throws XPathException

Description copied from class: PositionAndLast

Evaluate in a general context

Specified by:

evaluateItem in class PositionAndLast

Throws:

XPathException

getStreamerName

public String getStreamerName()

Description copied from class: SystemFunction

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. Special streaming support is generally available in Saxon-EE for all system functions that take a sequence as their argument.

Overrides:

getStreamerName in class SystemFunction

Returns:

a name that identifies a class that supports streamed evaluation of this system function, or null if no such class is available. The mapping of names to classes is defined in the Saxon-EE class StreamerMap. In non-streaming Saxon editions (HE and PE) the method always returns null.

getElaborator

public Elaborator getElaborator()

Make an elaborator for a system function call on this function

Overrides:

getElaborator in class SystemFunction

Returns:

a suitable elaborator; or null if no custom elaborator is available