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Posted to slide-dev@jakarta.apache.org by ju...@apache.org on 2002/03/19 15:11:13 UTC

cvs commit: jakarta-slide/src/webdav/server/org/apache/slide/webdav/method UncheckoutMethod.java

juergen     02/03/19 06:11:13

  Added:       src/webdav/server/org/apache/slide/webdav/method
                        UncheckoutMethod.java
  Log:
  Initial revision.
  (ralf)
  
  Revision  Changes    Path
  1.1                  jakarta-slide/src/webdav/server/org/apache/slide/webdav/method/UncheckoutMethod.java
  
  Index: UncheckoutMethod.java
  ===================================================================
  /*
   * $Header: /home/cvs/jakarta-slide/src/webdav/server/org/apache/slide/webdav/method/UncheckoutMethod.java,v 1.1 2002/03/19 14:11:13 juergen Exp $
   * $Revision: 1.1 $
   * $Date: 2002/03/19 14:11:13 $
   *
   * ====================================================================
   *
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 1999 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 acknowlegement:
   *       "This product includes software developed by the
   *        Apache Software Foundation (http://www.apache.org/)."
   *    Alternately, this acknowlegement may appear in the software itself,
   *    if and wherever such third-party acknowlegements normally appear.
   *
   * 4. The names "The Jakarta Project", "Tomcat", 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 names without prior written
   *    permission of the Apache Group.
   *
   * 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.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   * [Additional notices, if required by prior licensing conditions]
   *
   */
  package org.apache.slide.webdav.method;
  
  import java.io.IOException;
  
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  
  import javax.xml.parsers.ParserConfigurationException ;
  import org.xml.sax.SAXException;
  import org.jdom.Element;
  import org.jdom.Document;
  import org.jdom.Namespace;
  import org.jdom.JDOMException;
  import org.jdom.output.XMLOutputter;
  
  import org.apache.slide.common.NamespaceAccessToken;
  import org.apache.slide.webdav.WebdavServletConfig;
  import org.apache.slide.webdav.WebdavException;
  import org.apache.slide.webdav.util.VersioningHelper;
  import org.apache.slide.webdav.util.DeltavConstants;
  import org.apache.slide.webdav.util.ViolatedPrecondition;
  import org.apache.slide.webdav.util.PreconditionViolationException;
  import org.apache.util.WebdavStatus;
  
  /**
   * UNCHECKOUT method.
   *
   * @author <a href="mailto:ralf.stuckert@softwareag.com">Ralf Stuckert</a>
   */
  public class UncheckoutMethod extends WebdavMethod implements DeltavConstants {
      
      /**
       * String constant for <code>no-cache</code>.
       */
      protected static final String NO_CACHE = "no-cache";
      
      /**
       * Resource to be written.
       */
      private String resourcePath;
          
      /**
       * UNCHECKOUT method constructor.
       *
       * @param token   the Namespace access token.
       * @param req     the HTTP request.
       * @param resp    the HTTP response.
       * @param config  the servlet config.
       */
      public UncheckoutMethod( NamespaceAccessToken token, HttpServletRequest req, HttpServletResponse resp, WebdavServletConfig config) {
          super(token, req, resp, config);
          readRequestContent();
      }
      
      /**
       * Parse WebDAV XML query.
       *
       * @throws WebdavException
       * @throws IOException
       */
      protected void parseRequest() throws WebdavException, IOException {
          resourcePath = requestUri;
          if (resourcePath == null) {
              resourcePath = "/";
          }
          try{
              retrieveRequestContent();
          }
          catch (IOException  e){
              throw new WebdavException(WebdavStatus.SC_BAD_REQUEST);
          }
          catch (SAXException  e){
              throw new WebdavException(WebdavStatus.SC_BAD_REQUEST);
          }
          catch (ParserConfigurationException  e){
              throw new WebdavException(WebdavStatus.SC_BAD_REQUEST);
          }
      }
  
      /**
       * Execute the request.
       *
       * @throws WebdavException
       * @throws IOException
       */
      protected void executeRequest() throws WebdavException, IOException {
          
          // Prevent dirty reads
          slideToken.setForceStoreEnlistment(true);
          
          try {
              VersioningHelper vh = VersioningHelper.getVersioningHelper(
                  slideToken, token, req, resp, getConfig() );
              vh.uncheckout(resourcePath);
          }
          catch (PreconditionViolationException e) {
              sendPreconditionViolation(e.getViolatedPrecondition());
              throw e;
          }
          catch (Exception e) {
              e.printStackTrace();
              resp.setStatus( getErrorCode(e) );  // special handling needed
              throw new WebdavException( WebdavStatus.SC_ACCEPTED, false ); // abort the TA
          }
          finally {
              resp.setHeader(H_CACHE_CONTROL, NO_CACHE);
          }
          
      }
      
      /**
       * Sends a precondition vilolation response.
       *
       * @param     violatedPrecondition  the precondition that has been violated.
       *
       * @throws IOException if writing of the response fails.
       */
      protected void sendPreconditionViolation(ViolatedPrecondition violatedPrecondition) throws IOException {
          
          if (violatedPrecondition != null) {
              
              resp.setStatus(violatedPrecondition.getStatusCode());
              resp.setContentType(TEXT_XML);
              
              Element errorElement = new Element(E_ERROR, Namespace.getNamespace(DEFAULT_NAMESPACE));
              Element preconditionElement = new Element(violatedPrecondition.getPrecondition(),  Namespace.getNamespace(DEFAULT_NAMESPACE));
              errorElement.addContent(preconditionElement);
              new XMLOutputter().output(errorElement, resp.getWriter());
          }
      }
      
      
  }
  
  
  
  
  
  

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