org.eclipse.persistence.internal.jpa.deployment.xml.parser

Class XPathEngine

java.lang.Object

org.eclipse.persistence.internal.jpa.deployment.xml.parser.XPathEngine

public class XPathEngine
extends Object

INTERNAL Utility class for finding XML nodes using XPath expressions.

Method Summary

Modifier and Type	Method and Description
static XPathEngine	getInstance() Return the XPathEngine singleton.
NodeList	selectNodes(Node contextNode, String[] xPathFragments) Execute the XPath statement relative to the context node.
Node	selectSingleNode(Node contextNode, String[] xPathFragments) Execute the XPath statement relative to the context node.

Methods inherited from class java.lang.Object

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

Method Detail

getInstance

public static XPathEngine getInstance()

Return the XPathEngine singleton.

selectSingleNode

public Node selectSingleNode(Node contextNode,
                             String[] xPathFragments)

Execute the XPath statement relative to the context node.

Parameters:

contextNode - the node relative to which the XPath statement will be executed

xmlField - the field containing the XPath statement to be executed

namespaceResolver - used to resolve namespace prefixes to the corresponding namespace URI

Returns:

the first node located matching the XPath statement

Throws:

XMLPlatformException

selectNodes

public NodeList selectNodes(Node contextNode,
                            String[] xPathFragments)

Execute the XPath statement relative to the context node.

Parameters:

contextNode - the node relative to which the XPath statement will be executed

xmlField - the field containing the XPath statement to be executed

namespaceResolver - used to resolve namespace prefixes to the corresponding namespace URI

Returns:

a list of nodes matching the XPath statement

Throws:

XMLPlatformException