/*
 * The Apache Software License, Version 1.1
 *
 *
 * Copyright (c) 2000 The Apache Software Foundation.  All rights 
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:  
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "SOAP" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written 
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache",
 *    nor may "Apache" appear in their name, without prior written
 *    permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation and was
 * originally based on software copyright (c) 2000, International
 * Business Machines, Inc., http://www.apache.org.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */
package samples.messaging;

import java.util.Vector;
import org.w3c.dom.Attr;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.apache.soap.*;
import org.apache.soap.rpc.SOAPContext;

/**
 * This class receives the PO via a "purchaseOrder" method and does
 * something with it.
 *
 * @author Sanjiva Weerawarana &lt;sanjiva@watson.ibm.com&gt;
 * @author Scott Nichol &lt;snichol@computer.org&gt;
 */
public class POProcessor {
  public void purchaseOrder (Envelope env, SOAPContext reqCtx, 
                                           SOAPContext resCtx)
    throws Exception {

    String orderDate = null;
    Node shipTo = null;
    Node billTo = null;
    Node items = null;

    Body b = env.getBody();
    Vector entries = b.getBodyEntries();
    for (int i = 0; i < entries.size(); i++) {
      Element e = (Element) entries.elementAt(i);
      String nodeName = e.getNodeName();
      if (nodeName.equals("purchaseOrder")) {
        NodeList children = e.getChildNodes();
        for (int j = 0; j < children.getLength(); j++) {
          Node n = children.item(j);
          switch (n.getNodeType()) {
            case Node.ELEMENT_NODE:
              if (n.getNodeName().equals("shipTo"))
                shipTo = n;
              else if (n.getNodeName().equals("billTo"))
                billTo = n;
              else if (n.getNodeName().equals("items"))
                items = n;
              else if (!n.getNodeName().equals("comment"))
                throw new Exception("Unknown element name: " + n.getNodeName());
              break;
            case Node.ATTRIBUTE_NODE:
              if (n.getNodeName().equals("orderDate"))
                orderDate = ((Attr) n).getValue();
              break;
          }
        }
        if (orderDate == null)
          orderDate = e.getAttribute("orderDate");
      }
    }

    if (orderDate == null)
      throw new Exception("No order date specified");
    if (shipTo == null)
      throw new Exception("No ship to specified");
    if (billTo == null)
      throw new Exception("No bill to specified");
    if (items == null)
      throw new Exception("No items specified");

    StringBuffer response = new StringBuffer(1024);
    response.append(Constants.XML_DECL)
            .append("<SOAP-ENV:Envelope xmlns:SOAP-ENV=\"http://schemas.xmlsoap.org/soap/envelope/\">")
            .append("<SOAP-ENV:Body>")
            .append("<purchaseOrderResponse xmlns=\"urn:po-processor\">")
            .append("<return>")
            .append("OK thanks, got the PO for orderDate ")
            .append(orderDate)
            .append("; we'll contact you when ready.")
            .append("</return>")
            .append("</purchaseOrderResponse>")
            .append("</SOAP-ENV:Body>")
            .append("</SOAP-ENV:Envelope>");
	
    resCtx.setRootPart(response.toString(), "text/xml");
  }

  public void bustedRequest (Envelope env, SOAPContext reqCtx, 
                                           SOAPContext resCtx)
    throws Exception {
    throw new IllegalArgumentException ("Huh?");
  }
}