Package net.sf.saxon.expr.elab

Interface UnicodeStringEvaluator

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface UnicodeStringEvaluator

A StringEvaluator is a function that typically encapsulates the logic for evaluating an expression that returns a string, in the form of a UnicodeString

Method Summary

Modifier and Type	Method	Description
UnicodeString	eval(XPathContext context)	Evaluate the encapsulated expression

Method Details

eval

UnicodeString eval(XPathContext context)
            throws XPathException

Evaluate the encapsulated expression

Parameters:

context - the evaluation context

Returns:

the result, as a UnicodeString; or null to represent an empty sequence

Throws:

XPathException - if a dynamic error occurs