/* 
    P/P   *  Method: net.sourceforge.pebble.web.action.ViewBlogEntriesByPageAction__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.Constants;
    35  import net.sourceforge.pebble.domain.*;
    36  import net.sourceforge.pebble.util.SecurityUtils;
    37  import net.sourceforge.pebble.util.Pageable;
    38  import net.sourceforge.pebble.web.view.RedirectView;
    39  import net.sourceforge.pebble.web.view.View;
    40  import net.sourceforge.pebble.web.view.impl.BlogEntriesView;
    41  
         /* 
    P/P   *  Method: void net.sourceforge.pebble.web.action.ViewBlogEntriesByPageAction()
          */
    42  import javax.servlet.ServletException;
    43  import javax.servlet.http.HttpServletRequest;
    44  import javax.servlet.http.HttpServletResponse;
    45  import java.util.List;
    46  
    47  /**
    48   * Views blog entries page by page. The page size is the same as the "number of
    49   * blog entries shown on the home page".
    50   *
    51   * @author    Simon Brown
    52   */
    53  public class ViewBlogEntriesByPageAction extends Action {
    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 next View
    61     */
    62    public View process(HttpServletRequest request,
    63                        HttpServletResponse response)
    64        throws ServletException {
    65  
             /* 
    P/P       *  Method: View process(HttpServletRequest, HttpServletResponse)
              * 
              *  Preconditions:
              *    this.model != null
              *    this.model.data != null
              *    (soft) request != null
              * 
              *  Presumptions:
              *    java.util.HashMap:get(...)@63 != null
              *    java.util.List:get(...)@71 != null
              *    net.sourceforge.pebble.domain.Blog:getBlogEntryIndex(...)@97 != null
              *    net.sourceforge.pebble.domain.Blog:getBlogEntryIndex(...)@99 != null
              *    net.sourceforge.pebble.domain.BlogManager:getInstance(...)@69 != null
              *    ...
              * 
              *  Postconditions:
              *    return_value in Addr_Set{&new BlogEntriesView(process#5),&new BlogEntriesView(process#2),&new RedirectView(process#1)}
              *    new BlogEntriesView(process#2) num objects <= 1
              *    new BlogEntriesView(process#5) num objects <= 1
              *    new RedirectView(process#1) num objects <= 1
              * 
              *  Test Vectors:
              *    java.util.List:size(...)@70: {-231..0, 2..232-1}, {1}
              */
    66      AbstractBlog abstractBlog = (AbstractBlog)getModel().get(Constants.BLOG_KEY);
    67  
    68      if (abstractBlog instanceof MultiBlog) {
    69        List publicBlogs = BlogManager.getInstance().getPublicBlogs();
    70        if (publicBlogs.size() == 1) {
    71          Blog blog = (Blog)publicBlogs.get(0);
    72          return new RedirectView(blog.getUrl());
    73        } else {
    74          getModel().put(Constants.BLOG_ENTRIES, abstractBlog.getRecentBlogEntries());
    75  
    76          return new BlogEntriesView();
    77        }
    78      } else {
    79        Blog blog = (Blog)abstractBlog;
+   80        int page = 1;
    81        try {
    82          page = Integer.parseInt(request.getParameter("page"));
    83        } catch (NumberFormatException nfe) {
    84          page = 1;
    85        }
    86        boolean publishedOnly = true;
    87        if (SecurityUtils.isUserAuthorisedForBlog(blog)) {
    88          publishedOnly = false;
    89        }
    90  
    91        getModel().put(Constants.MONTHLY_BLOG, blog.getBlogForThisMonth());
    92        getModel().put("displayMode", "page");
    93        getModel().put("page", page);
    94  
    95        Pageable<String> pageable;
    96        if (publishedOnly) {
    97          pageable = new Pageable<String>(blog.getBlogEntryIndex().getPublishedBlogEntries());
    98        } else {
    99          pageable = new Pageable<String>(blog.getBlogEntryIndex().getBlogEntries());
   100        }
   101  
   102        pageable.setPageSize(blog.getRecentBlogEntriesOnHomePage());
   103        pageable.setPage(page);
   104        List<String> blogEntryIds = pageable.getListForPage();
   105        List<BlogEntry> blogEntries = blog.getBlogEntries(blogEntryIds);
   106  
   107        getModel().put(Constants.BLOG_ENTRIES, blogEntries);
   108        getModel().put("pageable", pageable);
   109  
   110        return new BlogEntriesView();
   111      }
   112    }
   113  
   114  }