WSDLConversionToSingleNsHelper.java

/*******************************************************************************
 * Copyright (c) 2006-2010 eBay Inc. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *******************************************************************************/
package org.ebayopensource.turmeric.tools.codegen.external.wsdl.parser;

import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;

import org.ebayopensource.turmeric.runtime.common.impl.utils.LogManager;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;



/**
 * Helper class to check if input wsdl is valid.
 * @author aupadhay
 *
 */

public class WSDLConversionToSingleNsHelper 
{

	private static final String XML_SCHEMA = "schema";
	private static final String XML_TARGETNAMESPACE = "targetNamespace";
	private static String XML_DEFINITION = "definitions";

   //TODO More checks to be introduced here.
	/**
	 * it checks if the input wsdl has single namespace.
	 * WTP validation will be checked in the codegen flow itself.
	 * @param wsdlLoc - location of the wsdl
	 * @return - if wsdl has single namespace
	 * @throws ParserConfigurationException 
	 * @throws IOException 
	 * @throws SAXException 
	 */
	public static boolean isValidWsdl(String wsdlLoc) throws ParserConfigurationException, SAXException, IOException
	{
		Logger s_logger = LogManager.getInstance(WSDLConversionToSingleNsHelper.class);
		Document  m_Document;
		String m_WsdlNamespace = null;
		DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
		DocumentBuilder builder;

		s_logger.log(Level.INFO, "Creating a new Document builder..");
		builder = factory.newDocumentBuilder();
		m_Document = builder.parse(wsdlLoc);
		s_logger.log(Level.INFO, "Parsing the original wsdl file...");
		NodeList nodelist = m_Document.getElementsByTagName("*");
		for (int i = 0; i < nodelist.getLength(); i++) 
		{
			Node node = nodelist.item(i);
			if (node.getNodeName().contains(XML_DEFINITION)) {
				m_WsdlNamespace = node.getAttributes().getNamedItem(
						XML_TARGETNAMESPACE).getNodeValue();
			}
			if (node.getNodeName().contains(XML_SCHEMA)) {
				String targetNamespace = ((Element)node).getAttributes().getNamedItem(XML_TARGETNAMESPACE).getNodeValue();
				if(!(targetNamespace.equals(m_WsdlNamespace)))
				{
					s_logger.log(Level.SEVERE, targetNamespace+"==="+m_WsdlNamespace);
					s_logger.log(Level.SEVERE, "Input not valid");
					return false;
				}
			}
		}
		return true;
	}
}