org.jaxen
Class XPathFunctionContext

java.lang.Object
  org.jaxen.SimpleFunctionContext
      org.jaxen.XPathFunctionContext

All Implemented Interfaces:

FunctionContext

public class XPathFunctionContext

extends SimpleFunctionContext

A FunctionContext implementing the core XPath function library, plus Jaxen extensions.

The core XPath function library is provided through this implementation of FunctionContext. Additionally, extension functions have been provided, as enumerated below.

This class is re-entrant and thread-safe. If using the default instance, it is inadvisable to call SimpleFunctionContext.registerFunction(String, String, Function) as that will extend the global function context, affecting other users.

Extension functions:

• evaluate(..)
• upper-case(..)
• lower-case(..)
• ends-with(..)

Author:

bob mcwhirter

See Also:

FunctionContext, org.jaxen.function, org.jaxen.function.xslt, org.jaxen.function.ext

Field Summary

private static XPathFunctionContext

instance

Fields inherited from class org.jaxen.SimpleFunctionContext

Constructor Summary

XPathFunctionContext()
Create a new XPath function context.

XPathFunctionContext(boolean includeExtensionFunctions)
Create a new XPath function context.

Method Summary

static FunctionContext	getInstance() Retrieve the default function context
private void	registerExtensionFunctions()
private void	registerXPathFunctions()
private void	registerXSLTFunctions()

Methods inherited from class org.jaxen.SimpleFunctionContext

getFunction, registerFunction

Methods inherited from class java.lang.Object

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

Field Detail

instance

private static XPathFunctionContext instance

Constructor Detail

XPathFunctionContext

public XPathFunctionContext()

Create a new XPath function context. All core XPath and Jaxen extension functions are registered.

XPathFunctionContext

public XPathFunctionContext(boolean includeExtensionFunctions)

Create a new XPath function context. All core XPath functions are registered.

Parameters:

includeExtensionFunctions - if true extension functions are included; if false, they aren't

Method Detail

getInstance

public static FunctionContext getInstance()

Retrieve the default function context

Returns:

the default function context

registerXPathFunctions

private void registerXPathFunctions()

registerXSLTFunctions

private void registerXSLTFunctions()

registerExtensionFunctions

private void registerExtensionFunctions()