org.htmlunit.html.xpath

Class XPathHelper

java.lang.Object

org.htmlunit.html.xpath.XPathHelper

public final class XPathHelper
extends Object

Collection of XPath utility methods.

Author:

Ahmed Ashour, Chuck Dumont, Ronald Brill

Method Summary

Modifier and Type	Method and Description
static <T> List<T>	getByXPath(DomNode contextNode, String xpathExpr, org.htmlunit.xpath.xml.utils.PrefixResolver prefixResolver) Evaluates an XPath expression from the specified node, returning the resultant nodes.
static <T> List<T>	getByXPath(Node node, XPathAdapter xpath, org.htmlunit.xpath.xml.utils.PrefixResolver prefixResolver)
static boolean	isProcessingXPath() Returns whether the thread is currently evaluating XPath expression or no.

Methods inherited from class java.lang.Object

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

Method Detail

getByXPath

public static <T> List<T> getByXPath(DomNode contextNode,
                                     String xpathExpr,
                                     org.htmlunit.xpath.xml.utils.PrefixResolver prefixResolver)

Evaluates an XPath expression from the specified node, returning the resultant nodes.

Type Parameters:

T - the type class

Parameters:

contextNode - the node to start searching from

xpathExpr - the XPath expression

prefixResolver - the prefix resolver to use for resolving namespace prefixes, or null

Returns:

the list of objects found

getByXPath

public static <T> List<T> getByXPath(Node node,
                                     XPathAdapter xpath,
                                     org.htmlunit.xpath.xml.utils.PrefixResolver prefixResolver)
                              throws TransformerException

Type Parameters:

T - the type of nodes expected

Parameters:

node - the start node

xpath - the XPathAdapter to search for

prefixResolver - the PrefixResolver to be used

Returns:

a list of nodes matching the given xpath

Throws:

TransformerException - in case of error

isProcessingXPath

public static boolean isProcessingXPath()

Returns whether the thread is currently evaluating XPath expression or no.

Returns:

whether the thread is currently evaluating XPath expression or no