org.apache.commons.jxpath
Class FunctionLibrary

java.lang.Object
  org.apache.commons.jxpath.FunctionLibrary

All Implemented Interfaces:

Functions

public class FunctionLibrary

extends java.lang.Object

implements Functions

An object that aggregates Functions objects into a group Functions object. Since JXPathContext can only register a single Functions object, FunctionLibrary should always be used to group all Functions objects that need to be registered.

Version:

$Revision: 1.5 $ $Date: 2004/02/29 14:17:42 $

Author:

Dmitri Plotnikov

Field Summary

private java.util.List	allFunctions
private java.util.HashMap	byNamespace

Constructor Summary

FunctionLibrary()

Method Summary

void	addFunctions(Functions functions) Add functions to the library
Function	getFunction(java.lang.String namespace, java.lang.String name, java.lang.Object[] parameters) Returns a Function, if any, for the specified namespace, name and parameter types.
java.util.Set	getUsedNamespaces() Returns a set containing all namespaces used by the aggregated Functions.
private void	prepareCache()
void	removeFunctions(Functions functions) Remove functions from the library.

Methods inherited from class java.lang.Object

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

Field Detail

allFunctions

private java.util.List allFunctions

byNamespace

private java.util.HashMap byNamespace

Constructor Detail

FunctionLibrary

public FunctionLibrary()

Method Detail

addFunctions

public void addFunctions(Functions functions)

Add functions to the library

removeFunctions

public void removeFunctions(Functions functions)

Remove functions from the library.

getUsedNamespaces

public java.util.Set getUsedNamespaces()

Returns a set containing all namespaces used by the aggregated Functions.

Specified by:

getUsedNamespaces in interface Functions

getFunction

public Function getFunction(java.lang.String namespace,
                            java.lang.String name,
                            java.lang.Object[] parameters)

Returns a Function, if any, for the specified namespace, name and parameter types.

Specified by:

getFunction in interface Functions

prepareCache

private void prepareCache()