/* 
    P/P   *  Method: net.sourceforge.pebble.web.action.EditBlogEntryAction__static_init
          */
     1  /*
     2   * Copyright (c) 2003-2006, Simon Brown
     3   * All rights reserved.
     4   *
     5   * Redistribution and use in source and binary forms, with or without
     6   * modification, are permitted provided that the following conditions are met:
     7   *
     8   *   - Redistributions of source code must retain the above copyright
     9   *     notice, this list of conditions and the following disclaimer.
    10   *
    11   *   - Redistributions in binary form must reproduce the above copyright
    12   *     notice, this list of conditions and the following disclaimer in
    13   *     the documentation and/or other materials provided with the
    14   *     distribution.
    15   *
    16   *   - Neither the name of Pebble nor the names of its contributors may
    17   *     be used to endorse or promote products derived from this software
    18   *     without specific prior written permission.
    19   *
    20   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
    21   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    22   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
    23   * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
    24   * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
    25   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
    26   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
    27   * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
    28   * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
    29   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
    30   * POSSIBILITY OF SUCH DAMAGE.
    31   */
    32  package net.sourceforge.pebble.web.action;
    33  
    34  import net.sourceforge.pebble.domain.BlogEntry;
    35  import net.sourceforge.pebble.domain.Blog;
    36  import net.sourceforge.pebble.domain.BlogService;
    37  import net.sourceforge.pebble.domain.BlogServiceException;
    38  import net.sourceforge.pebble.web.view.View;
    39  import net.sourceforge.pebble.web.view.NotFoundView;
    40  import net.sourceforge.pebble.web.view.impl.BlogEntryFormView;
    41  import net.sourceforge.pebble.Constants;
    42  
         /* 
    P/P   *  Method: void net.sourceforge.pebble.web.action.EditBlogEntryAction()
          */
    43  import javax.servlet.http.HttpServletRequest;
    44  import javax.servlet.http.HttpServletResponse;
    45  import javax.servlet.ServletException;
    46  
    47  /**
    48   * Edits an existing blog entry. This is called to populate a HTML
    49   * form containing the contents of the blog entry.
    50   *
    51   * @author    Simon Brown
    52   */
    53  public class EditBlogEntryAction extends SecureAction {
    54  
    55    /**
    56     * Peforms the processing associated with this action.
    57     *
    58     * @param request  the HttpServletRequest instance
    59     * @param response the HttpServletResponse instance
    60     * @return the name of the next view
    61     */
    62    public View process(HttpServletRequest request, HttpServletResponse response) throws ServletException {
             /* 
    P/P       *  Method: View process(HttpServletRequest, HttpServletResponse)
              * 
              *  Preconditions:
              *    request != null
              *    this.model != null
              *    this.model.data != null
              * 
              *  Postconditions:
              *    return_value in Addr_Set{&new BlogEntryFormView(process#4),&new NotFoundView(process#3)}
              *    new BlogEntryFormView(process#4) num objects <= 1
              *    new NotFoundView(process#3) num objects <= 1
              * 
              *  Test Vectors:
              *    net.sourceforge.pebble.domain.BlogService:getBlogEntry(...)@67: Inverse{null}, Addr_Set{null}
              */
    63      Blog blog = (Blog)getModel().get(Constants.BLOG_KEY);
    64      BlogService service = new BlogService();
    65      BlogEntry blogEntry = null;
    66      try {
    67        blogEntry = service.getBlogEntry(blog, request.getParameter("entry"));
    68      } catch (BlogServiceException e) {
    69        throw new ServletException(e);
    70      }
    71  
    72      if (blogEntry == null) {
    73        return new NotFoundView();
    74      } else {
    75        getModel().put(Constants.BLOG_ENTRY_KEY, blogEntry);
    76        return new BlogEntryFormView();
    77      }
    78    }
    79  
    80    /**
    81     * Gets a list of all roles that are allowed to access this action.
    82     *
    83     * @return  an array of Strings representing role names
    84     * @param request
    85     */
    86    public String[] getRoles(HttpServletRequest request) {
             /* 
    P/P       *  Method: String[] getRoles(HttpServletRequest)
              * 
              *  Presumptions:
              *    init'ed(net.sourceforge.pebble.Constants.BLOG_CONTRIBUTOR_ROLE)
              * 
              *  Postconditions:
              *    return_value == &new String[](getRoles#1)
              *    new String[](getRoles#1) num objects == 1
              *    return_value.length == 1
              *    return_value[0] == net.sourceforge.pebble.Constants.BLOG_CONTRIBUTOR_ROLE
              *    (soft) init'ed(return_value[0])
              */
    87      return new String[]{Constants.BLOG_CONTRIBUTOR_ROLE};
    88    }
    89  
    90  }