PositionAndLast.Last.LastFnElaborator

java.lang.Object

net.sf.saxon.expr.elab.Elaborator

net.sf.saxon.expr.elab.ItemElaborator

net.sf.saxon.functions.PositionAndLast.Last.LastFnElaborator

Enclosing class:: PositionAndLast.Last

public static class PositionAndLast.Last.LastFnElaborator extends ItemElaborator

Constructor Summary

Constructors

Constructor

Description

LastFnElaborator()
Method Summary

Modifier and Type

Method

Description

ItemEvaluator

elaborateForItem()

Get a function that evaluates the underlying expression in the form of a Item.

Methods inherited from class net.sf.saxon.expr.elab.ItemElaborator
eagerly, elaborateForBoolean, elaborateForPull, elaborateForPush, elaborateForUnicodeString

Methods inherited from class net.sf.saxon.expr.elab.Elaborator
elaborateForString, elaborateForUpdate, getConfiguration, getExpression, handleNullString, handleNullUnicodeString, handlePossiblyNullString, handlePossiblyNullUnicodeString, lazily, setExpression

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details
- LastFnElaborator
  
  public LastFnElaborator()
Method Details
- elaborateForItem
  
  public ItemEvaluator elaborateForItem()
  
  Description copied from class: Elaborator
  
  Get a function that evaluates the underlying expression in the form of a Item. This must only be called for expressions whose result has cardinality zero or one.
  
  Specified by:
  
  elaborateForItem in class ItemElaborator
  
  Returns:
  
  an evaluator for the expression that returns an Item, or null to represent an empty sequence.