emailsubscriptionlistener.java

### File Source: emailsubscriptionlistener.java

             /*
        P/P   *  Method: net.sourceforge.pebble.event.blogentry.EmailSubscriptionListener__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.event.blogentry;
        33
        34  import net.sourceforge.pebble.api.decorator.ContentDecoratorContext;
        35  import net.sourceforge.pebble.api.event.blogentry.BlogEntryEvent;
        36  import net.sourceforge.pebble.domain.Blog;
        37  import net.sourceforge.pebble.domain.BlogEntry;
        38  import net.sourceforge.pebble.util.MailUtils;
        39
             /*
        P/P   *  Method: void net.sourceforge.pebble.event.blogentry.EmailSubscriptionListener()
              */
        40  import javax.mail.Session;
        41  import java.text.SimpleDateFormat;
        42  import java.util.List;
        43
        44  /**
        45   * Sends an e-mail notification to e-mail subscribers when new blog entries
        46   * are added.
        47   *
        48   * @author Simon Brown
        49   */
        50  public class EmailSubscriptionListener extends BlogEntryListenerSupport {
        51
        52    /** a token to be replaced when sending e-mails */
        53    private static final String EMAIL_ADDRESS_TOKEN = "EMAIL_ADDRESS";
        54
        55    /**
        56     * Called when a blog entry has been published.
        57     *
        58     * @param event a BlogEntryEvent instance
        59     */
               /*
        P/P     *  Method: void blogEntryPublished(BlogEntryEvent)
                *
                *  Preconditions:
                *    event != null
                *    (soft) net.sourceforge.pebble.domain.State__static_init.new State(State__static_init#4).name != null
                *    (soft) net.sourceforge.pebble.domain.State__static_init.new State(State__static_init#5).name != null
                *    (soft) net/sourceforge/pebble/domain/BlogManager.instance != null
                *    (soft) init'ed(net/sourceforge/pebble/domain/BlogManager.instance.multiBlog)
                *
                *  Presumptions:
                *    blogEntry.blog@61 != null
                *    blogEntry.categories@61 != null
                *    blogEntry.comments@61 != null
                *    blogEntry.date@61 != null
                *    blogEntry.state@61 != null
                *    ...
                */
        60    public void blogEntryPublished(BlogEntryEvent event) {
        61      BlogEntry blogEntry = event.getBlogEntry();
        62      sendNotification((BlogEntry)blogEntry.clone());
        63    }
        64
        65    private void sendNotification(BlogEntry blogEntry) {
        66      Blog blog = blogEntry.getBlog();
        67
        68      // first of all decorate the blog entry, as if it was being rendered
        69      // via a HTML page or XML feed
        70      ContentDecoratorContext context = new ContentDecoratorContext();
        71      context.setView(ContentDecoratorContext.DETAIL_VIEW);
        72      context.setMedia(ContentDecoratorContext.EMAIL);
        73      blog.getContentDecoratorChain().decorate(context, blogEntry);
        74
        75      SimpleDateFormat sdf = new SimpleDateFormat("dd MMM yyyy HH:mm:ss z");
        76      sdf.setTimeZone(blog.getTimeZone());
        77
        78      String subject = "[Blog entry] " + blogEntry.getTitle();
        79
    +   80      String message = "Blog entry posted by " + (blogEntry.getUser() != null ? blogEntry.getUser().getName() : blogEntry.getAuthor()) + " on " + sdf.format(blogEntry.getDate());
        81      message += "\n<br>";
        82      if (blogEntry.getExcerpt() != null && blogEntry.getExcerpt().trim().length() > 0) {
        83        message += blogEntry.getExcerpt();
        84      } else {
        85        message += blogEntry.getBody();
        86      }
        87      message += "\n<br>";
        88      message += "<a href=\"" + blogEntry.getLocalPermalink() + "\">Permalink</a>";
        89
        90      message += " | ";
        91      message += "<a href=\"" + blog.getUrl() + "unsubscribe.action?email=" + EMAIL_ADDRESS_TOKEN + "\">Opt-out</a>";
        92
        93      List<String> to = blog.getEmailSubscriptionList().getEmailAddresses();
        94
        95      // now send personalized e-mails to the blog owner and everybody
        96      // that left a comment specifying their e-mail address
        97      try {
                   /*
        P/P         *  Method: void sendNotification(BlogEntry)
                    *
                    *  Preconditions:
                    *    blogEntry != null
                    *    blogEntry.blog != null
                    *    blogEntry.blog.decoratorChain != null
                    *    blogEntry.blog.decoratorChain.decorators != null
                    *    blogEntry.blog.emailSubscriptionList != null
                    *    init'ed(blogEntry.blog.emailSubscriptionList.emailAddresses)
                    *    init'ed(blogEntry.date)
                    *    init'ed(blogEntry.excerpt)
                    *    init'ed(blogEntry.title)
                    *    init'ed(blogEntry.permalink)
                    *    ...
                    *
                    *  Postconditions:
                    *    init'ed(blogEntry.permalink)
                    *    init'ed(blogEntry.user)
                    *
                    *  Test Vectors:
                    *    blogEntry.excerpt: Addr_Set{null}, Inverse{null}
                    *    java.lang.String:length(...)@82: {0}, {1..232-1}
                    */
        98        Session session = MailUtils.createSession();
        99        for (String emailAddress : to) {
       100          // customize the opt-out link and send the message
       101          MailUtils.sendMail(session, blog, emailAddress, subject,
       102              message.replaceAll(EMAIL_ADDRESS_TOKEN, emailAddress));
       103        }
       104      } catch (Exception e) {
       105          e.printStackTrace();
       106      } catch (NoClassDefFoundError e) {
       107          // most likely: JavaMail is not in classpath
       108          e.printStackTrace();
       109      }
       110    }
       111
       112  }

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emailsubscriptionlistener.java | 2010-Jun-25 19:40:32
emailsubscriptionlistener.class | 2010-Jul-19 20:23:40