net.sf.saxon.query

Interface XQueryFunctionBinder

All Superinterfaces:

FunctionLibrary

All Known Implementing Classes:

FunctionLibraryList, ImportedFunctionLibrary, XQueryFunctionLibrary

public interface XQueryFunctionBinder
extends FunctionLibrary

XQueryFunctionBinder is an extension of the FunctionLibrary interface used for function libraries that contain user-written XQuery functions. It provides a method that allows the XQueryFunction with a given name and arity to be located.

Method Summary

Methods

Modifier and Type	Method and Description
XQueryFunction	getDeclaration(StructuredQName functionName, Expression[] staticArgs) Get the function declaration corresponding to a given function name and arity

Methods inherited from interface net.sf.saxon.functions.FunctionLibrary

bind, copy, getFunctionItem, isAvailable

Method Detail

getDeclaration

XQueryFunction getDeclaration(StructuredQName functionName,
                            Expression[] staticArgs)

Get the function declaration corresponding to a given function name and arity

Parameters:

functionName - the name of the function as a QName

staticArgs - the expressions supplied as arguments in the function call (typically, we only need to know the number of arguments)

Returns:

the XQueryFunction if there is one, or null if not.