net.sf.saxon.functions

Class Last

public class Last extends SystemFunction

Implement the XPath 2.0 function last()

Method Summary
Item	evaluateItem(XPathContext c) Evaluate in a general context
int	getIntrinsicDependencies() Determine the dependencies
Expression	preEvaluate(ExpressionVisitor visitor) preEvaluate: this method suppresses compile-time evaluation by doing nothing (because the value of the expression depends on the runtime context)
Expression	promote(PromotionOffer offer, Expression parent) Promote this expression if possible
Expression	typeCheck(ExpressionVisitor visitor, ItemType contextItemType)

Method Detail

public Item evaluateItem(XPathContext c)

Evaluate in a general context

public int getIntrinsicDependencies()

Determine the dependencies

public Expression preEvaluate(ExpressionVisitor visitor)

preEvaluate: this method suppresses compile-time evaluation by doing nothing (because the value of the expression depends on the runtime context)

Parameters: visitor an expression visitor

Promote this expression if possible

public Expression typeCheck(ExpressionVisitor visitor, ItemType contextItemType)