blogentrytopdfaction.java

### File Source: blogentrytopdfaction.java

             /*
        P/P   *  Method: net.sourceforge.pebble.web.action.BlogEntryToPdfAction__static_init
              *
              *  Postconditions:
              *    init'ed(log)
              */
         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
        36  import net.sourceforge.pebble.util.SecurityUtils;
        37
        38  import net.sourceforge.pebble.domain.Blog;
        39  import net.sourceforge.pebble.domain.BlogEntry;
        40  import net.sourceforge.pebble.domain.BlogService;
        41  import net.sourceforge.pebble.domain.BlogServiceException;
        42
        43  import net.sourceforge.pebble.web.view.NotFoundView;
        44  import net.sourceforge.pebble.web.view.PdfView;
        45  import net.sourceforge.pebble.web.view.View;
        46
             /*
        P/P   *  Method: void net.sourceforge.pebble.web.action.BlogEntryToPdfAction()
              */
        47  import javax.servlet.ServletException;
        48  import javax.servlet.http.HttpServletRequest;
        49  import javax.servlet.http.HttpServletResponse;
        50
        51  import org.apache.commons.logging.Log;
        52  import org.apache.commons.logging.LogFactory;
        53
        54  /**
        55   * Allows the user to export current blog entry as a PDF file.
        56   *
        57   * @author    Alexander Zagniotov
        58   */
        59  public class BlogEntryToPdfAction extends Action {
        60
        61    private static final Log log = LogFactory.getLog(BlogEntryToPdfAction.class);
        62
        63    /**
        64     * Peforms the processing associated with this action.
        65     *
        66     * @param request  the HttpServletRequest instance
        67     * @param response the HttpServletResponse instance
        68     * @return the name of the next view
        69     */
        70    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 PdfView(process#4),&new NotFoundView(process#3)}
                  *    new NotFoundView(process#3) num objects <= 1
                  *    new PdfView(process#4) num objects <= 1
                  *    new PdfView(process#4).entry != null
                  *    new PdfView(process#4).filename != null
                  *    new PdfView(process#4).length == 0
                  *
                  *  Test Vectors:
                  *    javax.servlet.http.HttpServletRequest:getParameter(...)@72: Addr_Set{null}, Inverse{null}
                  */
        71      Blog blog = (Blog)getModel().get(Constants.BLOG_KEY);
        72      String entryId = request.getParameter("entry");
        73
        74      BlogEntry blogEntry = null;
        75      if (entryId != null) {
        76        BlogService service = new BlogService();
        77        try {
        78          blogEntry = service.getBlogEntry(blog, entryId);
        79        } catch (BlogServiceException e) {
        80          throw new ServletException(e);
        81        }
        82      }
        83
        84  	if (blogEntry == null) {
        85        // the entry cannot be found - it may have been removed or the
        86        // requesting URL was wrong
        87        return new NotFoundView();
        88
        89      } else {
        90
        91  	  String filename = this.buildPermalink(blogEntry);
        92  	  return new PdfView(blogEntry, filename + ".pdf");
        93
        94  	}
        95    }
        96
               /*
        P/P     *  Method: String buildPermalink(BlogEntry)
                *
                *  Preconditions:
                *    blogEntry != null
                *
                *  Postconditions:
                *    return_value != null
                *
                *  Test Vectors:
                *    java.lang.String:length(...)@111: {1..232-1}, {0}
                *    java.lang.String:length(...)@99: {1..232-1}, {0}
                *    net.sourceforge.pebble.domain.BlogEntry:getTitle(...)@98: Addr_Set{null}, Inverse{null}
                */
        97    private String buildPermalink(BlogEntry blogEntry) {
        98      String title = blogEntry.getTitle();
        99      if (title == null || title.length() == 0) {
       100        title = "" + blogEntry.getId();
       101      } else {
       102        title = title.toLowerCase();
       103        title = title.replaceAll("[\\. ,;/\\\\-]", "_");
       104        title = title.replaceAll("[^a-z0-9_]", "");
       105        title = title.replaceAll("_+", "_");
       106        title = title.replaceAll("^_*", "");
       107        title = title.replaceAll("_*$", "");
       108      }
       109
       110      // if the title has been blanked out, use the blog entry instead
    +  111      if (title == null || title.length() == 0) {
       112        title = "" + blogEntry.getId();
       113      }
       114      return title;
       115    }
       116  }

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blogentrytopdfaction.java | 2010-Jun-25 19:40:34
blogentrytopdfaction.class | 2010-Jul-19 20:23:38