package org.hwo.xml;

import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;

import org.hwo.logging.Logging;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

public class XMLHelper {

	static XPath _xpath;
	
	
	public static NodeList select(Node node,String xpath){
		try {
			return (NodeList)_xpath.evaluate(xpath, node, XPathConstants.NODESET);
		} catch (XPathExpressionException e) {
			Logging.log(e);
		}
		
		return null;
	}
	
	public static Element firstNamedElement(Node node,String name){
		try {
			return (Element)_xpath.evaluate(name, node, XPathConstants.NODE);
		} catch (XPathExpressionException e) {
			Logging.log(e);
		}
		return null;
	}
	
	
	static {
		_xpath = XPathFactory.newInstance().newXPath();
	}
	
	
}