Package net.sf.saxon.style

Class AttributeValueTemplate

java.lang.Object

net.sf.saxon.style.AttributeValueTemplate

public abstract class AttributeValueTemplate
extends Object

This class represents an attribute value template. The class allows an AVT to be parsed, and can construct an Expression that returns the effective value of the AVT.

This is an abstract class that is never instantiated, it contains static methods only.

Method Summary

Modifier and Type	Method	Description
static Expression	make(String avt, StaticContext env)	Static factory method to create an AVT from an XSLT string representation.
static Expression	makeFirstItem(Expression exp, StaticContext env)	Make an expression that extracts the first item of a sequence, after atomization

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

make

public static Expression make(String avt,
 StaticContext env)
                       throws XPathException

Static factory method to create an AVT from an XSLT string representation. The method is also used for text value templates.

Parameters:

avt - the attribute value template (or TVT) as written.

env - the static context

Returns:

an expression that computes the value of the attribute / content, as a string. In the case of a TVT this must be further processed to create a text node.

Throws:

XPathException - if a static error is found

makeFirstItem

public static Expression makeFirstItem(Expression exp,
 StaticContext env)

Make an expression that extracts the first item of a sequence, after atomization

Parameters:

exp - an expression that evaluates to a sequence

env - the static context of the expression

Returns:

an expression that returns the first item in the sequence returned by exp