net.sf.saxon.functions

Class Root

public class Root extends SystemFunction

Implement the XPath 2.0 root() function

Method Summary
int	computeSpecialProperties() Get the static properties of this expression (other than its type).
Item	evaluateItem(XPathContext c) Evaluate in a general context
Expression	simplify(StaticContext env) Simplify and validate.

Get the static properties of this expression (other than its type). The result is bit-significant. These properties are used for optimizations. In general, if property bit is set, it is true, but if it is unset, the value is unknown.

evaluateItem

public Item evaluateItem(XPathContext c)

Evaluate in a general context

simplify

public Expression simplify(StaticContext env)

Simplify and validate.

Class Root

Method Detail

computeSpecialProperties

evaluateItem

simplify