uk.ac.sheffield.jast.test

Class TestXPathCompiler

java.lang.Object

uk.ac.sheffield.jast.test.TestXPathCompiler

public class TestXPathCompiler
extends java.lang.Object

Demonstrates the use of XPath and XPathCompiler to compile XPath query patterns. For each query pattern, creates an XPath object, which invokes the XPathCompiler behind the scenes, to convert the query pattern String into a list of executable XPathRule objects.

Version:

2.5

Author:

Anthony J H Simons

Constructor Summary

Constructors

Constructor and Description
TestXPathCompiler()

Method Summary

Modifier and Type	Method and Description
private static void	compile(java.lang.String pattern) Compiles one XPath pattern, then extracts the list of XPathRules and displays this using the toString() method of XPathRule.
static void	main(java.lang.String[] args) Demonstration program to illustrate the compilation of XPath query patterns.

Methods inherited from class java.lang.Object

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

Constructor Detail

TestXPathCompiler

public TestXPathCompiler()

Method Detail

main

public static void main(java.lang.String[] args)
                 throws java.lang.Exception

Demonstration program to illustrate the compilation of XPath query patterns. Creates a series of XPath objects, each with a increasingly complicated XPath query pattern. Behind the scenes, an XPathCompiler processes each query pattern, compiling it to a list of executable XPathRule objects. This demonstration merely prints out the list of rules, to demonstrate what has been recognised by XPathCompiler.

Parameters:

args - are ignored.

Throws:

java.lang.Exception - if an error occurs.

compile

private static void compile(java.lang.String pattern)
                     throws SyntaxError

Compiles one XPath pattern, then extracts the list of XPathRules and displays this using the toString() method of XPathRule.

Parameters:

pattern - an XPath query pattern.

Throws:

SyntaxError - if the XPath syntax is faulty.