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: 652845 $ $Date: 2008-05-02 12:46:46 -0500 (Fri, 02 May 2008) $

Field Summary

Fields
Modifier and Type Field Description

private java.util.List allFunctions

private java.util.HashMap byNamespace

Constructor Summary

Constructors
Constructor Description

FunctionLibrary()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`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()`	Prepare the cache.
`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
    
    Parameters:
    
    functions - to add
  - removeFunctions
```
public void removeFunctions(Functions functions)
```
    Remove functions from the library.
    
    Parameters:
    
    functions - to remove
  - getUsedNamespaces
```
public java.util.Set getUsedNamespaces()
```
    Returns a set containing all namespaces used by the aggregated Functions.
    
    Specified by:
    
    getUsedNamespaces in interface Functions
    
    Returns:
    
    Set
  - 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
    
    Parameters:
    
    namespace - function namespace
    
    name - function name
    
    parameters - parameters
    
    Returns:
    
    Function found
  - prepareCache
```
private void prepareCache()
```
    Prepare the cache.