Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
    
 Copyright (c) 2009-2011, AOL Inc.
 All rights reserved.
    
 This code is licensed under a BSD license.
    
 Howard Uman
    
 */

import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpression;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;
import org.w3c.dom.Node;

public class Main {
    public static String getXpathExpressionValue(Object xprContext, String xpExpression)
            throws XPathExpressionException {
        XPath xpath = XPathFactory.newInstance().newXPath();

        XPathExpression xpe = xpath.compile(xpExpression);
        Node valueNode = (Node) xpe.evaluate(xprContext, XPathConstants.NODE);
        String value = null;
        if (valueNode != null)
            value = valueNode.getNodeValue();
        if (value != null) {
            // if the node is a text node - then we trim and (potentially) look for CDATA
            if (valueNode.getNodeType() == Node.TEXT_NODE) {
                value = value.trim();

                // look for CDATA if we got nothing (stupid whitespace)
                if (value.length() == 0) {
                    Node siblingForCDATA = valueNode.getNextSibling();
                    if (siblingForCDATA.getNodeType() == Node.CDATA_SECTION_NODE) {
                        value = siblingForCDATA.getNodeValue();
                    }
                }
            }
        }

        return value;
    }
}