org.xmlpull.v1.builder.xpath.jaxen

Class XPathFunctionContext

java.lang.Object

org.xmlpull.v1.builder.xpath.jaxen.SimpleFunctionContext

org.xmlpull.v1.builder.xpath.jaxen.XPathFunctionContext

All Implemented Interfaces:

FunctionContext

public class XPathFunctionContext
extends SimpleFunctionContext

A FunctionContext implementing the core XPath function library, with extensions.

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

This class implements a Singleton pattern (see getInstance()), as it is perfectly re-entrant and thread-safe. If using the singleton, it is inadvisable to call SimpleFunctionContext.registerFunction(java.lang.String, java.lang.String, org.xmlpull.v1.builder.xpath.jaxen.Function) as that will extend the global function context, affecting other users of the singleton. But that's your call, really, now isn't it? That may be what you really want to do.

Extension functions:

• matrix-concat(..)
• evaluate(..)

Author:

bob mcwhirter

See Also:

FunctionContext

Constructor Summary

Constructors

Constructor and Description
XPathFunctionContext() Construct.

Method Summary

Methods

Modifier and Type	Method and Description
static FunctionContext	getInstance() Retrieve the singleton instance.

Methods inherited from class org.xmlpull.v1.builder.xpath.jaxen.SimpleFunctionContext

getFunction, registerFunction

Methods inherited from class java.lang.Object

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

Constructor Detail

XPathFunctionContext

public XPathFunctionContext()

Construct.

Construct with all core XPath functions registered.

Method Detail

getInstance

public static FunctionContext getInstance()

Retrieve the singleton instance.

Returns:

The singleton instance.