net.sf.saxon.functions

Class NamePart

public class NamePart extends SystemFunction

This class supports the name(), local-name(), and namespace-uri() functions from XPath 1.0, and also the XSLT generate-id() function

Field Summary
static int	DOCUMENT_URI
static int	GENERATE_ID
static int	LOCAL_NAME
static int	NAME
static int	NAMESPACE_URI
static int	NODE_NAME

Method Summary
int	computeSpecialProperties() Determine the special properties of this expression.
Item	evaluateItem(XPathContext c) Evaluate the function in a string context
static boolean	isGenerateIdFunction(Expression exp) Test whether an expression is a call on the generate-id() function
Expression	simplify(ExpressionVisitor visitor) Simplify and validate.

Field Detail

Determine the special properties of this expression. The generate-id() function is a special case: it is considered creative if its operand is creative, so that generate-id(f()) is not taken out of a loop

evaluateItem

public Item evaluateItem(XPathContext c)

Evaluate the function in a string context

isGenerateIdFunction

public static boolean isGenerateIdFunction(Expression exp)

Test whether an expression is a call on the generate-id() function

Parameters: exp the expression to be tested

Returns: true if exp is a call on generate-id(), else false

simplify

public Expression simplify(ExpressionVisitor visitor)

Simplify and validate.

Parameters: visitor an expression visitor