net.sf.saxon.functions

Class KeyFn

public class KeyFn extends SystemFunction implements XSLTFunction

Method Summary
void	checkArguments(StaticContext env)
int	computeSpecialProperties() Get the static properties of this expression (other than its type).
static KeyFn	internalKeyCall(NamePool pool, int fingerprint, String name, Expression value, Expression doc) Non-standard constructor to create an internal call on key() with a known key fingerprint
SequenceIterator	iterate(XPathContext context) Enumerate the results of the expression
Expression	preEvaluate(StaticContext env) preEvaluate: this method suppresses compile-time evaluation by doing nothing
Expression	simplify(StaticContext env) Simplify: add a third implicit argument, the context document

Method Detail

checkArguments

public void checkArguments(StaticContext env)

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