/*
    * Copyright 2001-2004 The Apache Software Foundation.
    * 
    * 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
    * 
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.apache.juddi.handler;
  
  import java.util.Vector;
  
  import org.apache.juddi.datatype.RegistryObject;
  import org.apache.juddi.datatype.response.DispositionReport;
  import org.apache.juddi.error.RegistryException;
  import org.apache.juddi.util.xml.XMLUtils;
  import org.w3c.dom.Document;
  import org.w3c.dom.Element;
  
  /***
   * Knows about the creation and populating of RegistryException
   * objects.
   *
   * @author Steve Viens (sviens@apache.org)
   */
  public class RegistryExceptionHandler extends AbstractHandler
  {
    public static final String TAG_NAME = "fault";
  
    private HandlerMaker maker = null;
  
    protected RegistryExceptionHandler(HandlerMaker maker)
    {
      this.maker = maker;
    }
  
    public RegistryObject unmarshal(Element element)
    {
      Vector nodeList = null;
      AbstractHandler handler = null;
  
      // Attributes
      // {none}
  
      // Text Node Value
      // {none}
  
      // Child Elements
      String fCode = null;
      nodeList = XMLUtils.getChildElementsByTagName(element,"faultcode");
      if (nodeList.size() > 0)
        fCode = XMLUtils.getText((Element)nodeList.elementAt(0));
  
      String fString = null;
      nodeList = XMLUtils.getChildElementsByTagName(element,"faultstring");
      if (nodeList.size() > 0)
        fString = XMLUtils.getText((Element)nodeList.elementAt(0));
  
      String fActor = null;
      nodeList = XMLUtils.getChildElementsByTagName(element,"faultactor");
      if (nodeList.size() > 0)
        fActor = XMLUtils.getText((Element)nodeList.elementAt(0));
  
      DispositionReport dispRpt = null;
      nodeList = XMLUtils.getChildElementsByTagName(element,"detail");
      if (nodeList.size() > 0)
      {
        nodeList = XMLUtils.getChildElementsByTagName((Element)nodeList.elementAt(0),DispositionReportHandler.TAG_NAME);
        if (nodeList.size() > 0)
        {
          handler = maker.lookup(DispositionReportHandler.TAG_NAME);
          dispRpt = ((DispositionReport)handler.unmarshal((Element)nodeList.elementAt(0)));
        }
      }
  
      // Create RegistryException instance and return
      RegistryException obj = new RegistryException(fCode,fString,fActor,dispRpt); 
      
      return obj;
    }
  
    public void marshal(RegistryObject object,Element parent)
    {
      RegistryException regEx = (RegistryException)object;
      Document document = parent.getOwnerDocument();
      String generic = getGeneric(null);
      String namespace = getUDDINamespace(generic);
      Element fault = document.createElementNS(namespace,TAG_NAME);
  
      String fCode = regEx.getFaultCode();
      if (fCode != null)
      {
       Element fCodeElement = document.createElement("faultcode");
       fCodeElement.appendChild(document.createTextNode(fCode));
       fault.appendChild(fCodeElement);
     }
 
     String fString = regEx.getFaultString();
     if (fString == null)
       fString = "";
 
     Element fStringElement = document.createElement("faultstring");
     fStringElement.appendChild(document.createTextNode(fString));
     fault.appendChild(fStringElement);
 
     String fActor = regEx.getFaultActor();
     if (fActor != null)
     {
       Element fActorElement = document.createElement("faultactor");
       fActorElement.appendChild(document.createTextNode(fActor));
       fault.appendChild(fActorElement);
     }
 
     // check for a DispositionReport in the exception and if one exists,
     // grab it, marshal it into xml and stuff it into a SOAP fault
     // detail element.
 
     DispositionReport dispRpt = regEx.getDispositionReport();
     if (dispRpt != null)
     {
       Element fDetailElement = document.createElement("detail");
       IHandler handler = maker.lookup(DispositionReportHandler.TAG_NAME);
       handler.marshal(dispRpt,fDetailElement);
       fault.appendChild(fDetailElement);
     }
 
     parent.appendChild(fault);
   }
 
 
   /****************************************************************************/
   /****************************** TEST DRIVER *********************************/
   /****************************************************************************/
 
 
   public static void main(String args[])
     throws Exception
   {
     HandlerMaker maker = HandlerMaker.getInstance();
     AbstractHandler handler = maker.lookup(RegistryExceptionHandler.TAG_NAME);
     Element parent = XMLUtils.newRootElement();
     Element child = null;
 
     RegistryException regex = 
         new org.apache.juddi.error.AuthTokenRequiredException("Test Exception");
 
     System.out.println();
 
     RegistryObject regObject = regex;
     handler.marshal(regObject,parent);
     child = (Element)parent.getFirstChild();
     parent.removeChild(child);
     XMLUtils.writeXML(child,System.out);
 
     System.out.println();
 
     regObject = handler.unmarshal(child);
     handler.marshal(regObject,parent);
     child = (Element)parent.getFirstChild();
     parent.removeChild(child);
     XMLUtils.writeXML(child,System.out);
 
     System.out.println();
   }
 }