OrderPatchMethod.java :  » Content-Management-System » harmonise » com » ibm » webdav » protocol » http » Java Open Source

/*
 * (C) Copyright Simulacra Media Ltd, 2004.  All rights reserved.
 *
 * The program is provided "AS IS" without any warranty express or
 * implied, including the warranty of non-infringement and the implied
 * warranties of merchantibility and fitness for a particular purpose.
 * Simulacra Media Ltd will not be liable for any damages suffered by you as a result
 * of using the Program. In no event will Simulacra Media Ltd be liable for any
 * special, indirect or consequential damages or lost profits even if
 * Simulacra Media Ltd has been advised of the possibility of their occurrence. 
 * Simulacra Media Ltd will not be liable for any third party claims against you.
 * 
 */
package com.ibm.webdav.protocol.http;

import java.io.*;
import java.util.*;
import java.util.logging.*;

import javax.servlet.http.*;
import javax.xml.parsers.*;

import org.w3c.dom.*;

import com.ibm.webdav.*;
import com.ibm.webdav.impl.*;

/**
 * Executes the WebDAV ordered collections ORDERPATCH method.
 * 
 * @author Michael Bell
 * @version $Revision: 1.1 $
 * @since November 21, 2003
 */
public class OrderPatchMethod extends WebDAVMethod {
  
  private static Logger m_logger = Logger.getLogger(OrderPatchMethod.class.getName());

  
  public static final String METHOD_NAME = "ORDERPATCH";

  /**
   * @param request
   * @param response
   * @throws WebDAVException
   */
  public OrderPatchMethod(
    HttpServletRequest request,
    HttpServletResponse response)
    throws WebDAVException {
    super(request, response);
    methodName = METHOD_NAME;
  }

  /* (non-Javadoc)
   * @see com.ibm.webdav.protocol.http.WebDAVMethod#execute()
   */
  public WebDAVStatus execute() throws WebDAVException {

    try {
      // get any arguments out of the headers
      String depth = context.getRequestContext().depth();
      
      Document contents = null;
      
      if (context.getRequestContext().contentLength() > 0) {
        // get the request entity body and parse it
        WebDAVErrorHandler errorHandler =
          new WebDAVErrorHandler(resource.getURL().toString());
      
        DocumentBuilderFactory factory =
          DocumentBuilderFactory.newInstance();
        factory.setNamespaceAware(true);
      
        DocumentBuilder docbuilder = factory.newDocumentBuilder();
        docbuilder.setErrorHandler(errorHandler);
        contents =
          docbuilder.parse(
            new org.xml.sax.InputSource(request.getReader()));
      
        if (errorHandler.getErrorCount() > 0) {
          throw new WebDAVException(
            WebDAVStatus.SC_BAD_REQUEST,
            "Syntax error in PROPFIND request entity body");
        }
      }
      
      // get the arguments for the getProperties() method, and figure
      // out which method variant to call.
      if (ResourceImpl.debug) {
        System.err.println("property request entity:");
      
        PrintWriter pout = new PrintWriter(System.err);
        pout.print(XMLUtility.printNode(contents.getDocumentElement()));
      
        //((Document) contents).printWithFormat(pout);
      }
      
      if(resource.isCollection() == true) {
        MultiStatus multiStatus = ((CollectionImpl)resource).setOrdering(context,contents);
        Enumeration responses = multiStatus.getResponses();
    
        if (responses.hasMoreElements()) {
          // there's more than one response, so return a multistatus
          context.getResponseContext().contentType("text/xml");
          setResponseHeaders();
          setStatusCode(WebDAVStatus.SC_MULTI_STATUS);

          // output the results as an XML document
          Document results = multiStatus.asXML();
          //((Document) results).setEncoding(getResponseCharset());
          if (ResourceImpl.debug) {
            System.err.println("property update results:");
            PrintWriter pout = new PrintWriter(System.err);
            pout.print(XMLUtility.printNode(results.getDocumentElement()));
                    //((Document) results).printWithFormat(pout);
          }
          PrintWriter pout = new PrintWriter(response.getWriter(), false);
          //((Document) results).print(pout);
          pout.print(multiStatus.toString());
                pout.close();
        } else {
          setStatusCode(WebDAVStatus.SC_OK); // the default status code
          setResponseHeaders();
        }
      } else {
        throw new WebDAVException(WebDAVStatus.SC_BAD_REQUEST,"Invalid request on a non-collection resource");
      }
      
    
    } catch (WebDAVException exc) {
      m_logger.log(Level.INFO, exc.getLocalizedMessage());
      setStatusCode(exc.getStatusCode());
    } catch (Exception exc) {
      m_logger.log(Level.WARNING, exc.getMessage(), exc);
      setStatusCode(WebDAVStatus.SC_INTERNAL_SERVER_ERROR);
    }
        
    return context.getStatusCode();
  }

}