com.novell.xml.xpath
Class FunctionLibraryImpl

java.lang.Object
  com.novell.xml.xpath.FunctionLibraryImpl

All Implemented Interfaces:

FunctionLibrary

Direct Known Subclasses:

ExtensibleFunctionLibrary

public class FunctionLibraryImpl

extends Object

implements FunctionLibrary

Implementation of com.novell.xml.xpath.FunctionLibrary for convenience.

Constructor Summary

FunctionLibraryImpl()

Method Summary

void	addFunction(Function function) Add a function to the library
protected Function	findFunction(ExpandedQName name) Return a function implementation by name, or null if no implementation is available for the passed name.
Function	getFunction(ExpandedQName name) Return an object of type Function given the function name.
boolean	isFunctionAvailable(ExpressionContext context, ExpandedQName name) Return true if a function under a given name is available

Methods inherited from class java.lang.Object

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

Constructor Detail

FunctionLibraryImpl

public FunctionLibraryImpl()

Method Detail

getFunction

public Function getFunction(ExpandedQName name)
                     throws XPathParserException

Return an object of type Function given the function name.

Specified by:

getFunction in interface FunctionLibrary

Parameters:

name - name of the function to find

Returns:

a Function object

Throws:

XPathParserException

isFunctionAvailable

public boolean isFunctionAvailable(ExpressionContext context,
                                   ExpandedQName name)

Return true if a function under a given name is available

Specified by:

isFunctionAvailable in interface FunctionLibrary

Parameters:

context - the expression context

name - name of the function

addFunction

public void addFunction(Function function)

Add a function to the library

Specified by:

addFunction in interface FunctionLibrary

Parameters:

function - The function to bind.

findFunction

protected Function findFunction(ExpandedQName name)

Return a function implementation by name, or null if no implementation is available for the passed name.

Parameters:

name - The expanded name of the function

Returns:

The function, or null if none found with the passed name.