shionn.blog.content.RssController.java Source code

Introduction

Here is the source code for shionn.blog.content.RssController.java

Source

package shionn.blog.content;

import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Locale;

import org.apache.commons.lang3.StringUtils;
import org.apache.ibatis.session.SqlSession;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.context.annotation.RequestScope;

import shionn.blog.content.rss.Channel;
import shionn.blog.content.rss.Item;
import shionn.blog.content.rss.Rss;
import shionn.blog.db.dao.RssDao;
import shionn.blog.db.dbo.Comment;
import shionn.blog.db.dbo.Post;

/**
 * Code sous licence GPLv3 (http://www.gnu.org/licenses/gpl.html)
 *
 * @author <b>Shionn</b>, shionn@gmail.com <i>http://shionn.org</i><br>
 *         GCS d- s+:+ a+ C++ UL/M P L+ E--- W++ N K- w-- M+ t+ 5 X R+ !tv b+ D+ G- e+++ h+ r- y+
 */
@RestController
@RequestScope
public class RssController {

    private static final SimpleDateFormat RFC822_DATE_FORMAT = new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss Z",
            Locale.ENGLISH);
    @Autowired
    private SqlSession session;
    @Autowired
    private BlogConfiguration configuration;

    @RequestMapping(value = "/feed", method = RequestMethod.GET, produces = MediaType.APPLICATION_XML_VALUE)
    public Rss posts() {
        Rss rss = new Rss();
        rss.setChannel(buildChannel(buildPosts()));
        return rss;
    }

    @RequestMapping(value = "/comment/feed", method = RequestMethod.GET, produces = MediaType.APPLICATION_XML_VALUE)
    public Rss comments() {
        Rss rss = new Rss();
        rss.setChannel(buildChannel(buildComments()));
        return rss;
    }

    private Channel buildChannel(List<Item> items) {
        Channel channel = new Channel();
        channel.setDescription(configuration.getBlogDescription());
        channel.setLink(configuration.getBlogUrl());
        channel.setTitle(configuration.getBlogTitle());
        channel.setLanguage(configuration.getBlogLanguage());
        channel.setItems(items);
        return channel;
    }

    private List<Item> buildPosts() {
        List<Item> items = new ArrayList<Item>();
        for (Post post : session.getMapper(RssDao.class).readLastPosts()) {
            Item item = new Item();
            item.setTitle(post.getTitle());
            item.setLink(StringUtils.appendIfMissing(configuration.getBlogUrl(), "/") + post.getUrl());
            item.setDescription(buildShortContent(post.getContent()));
            item.setPubDate(formatDate(post.getPublished()));
            item.setAuthor(post.getAuthor().getEmail());
            items.add(item);
        }
        return items;
    }

    private List<Item> buildComments() {
        List<Item> items = new ArrayList<Item>();
        for (Comment comment : session.getMapper(RssDao.class).readLastComments()) {
            Item item = new Item();
            item.setTitle(comment.getPost().getTitle());
            item.setLink(StringUtils.appendIfMissing(configuration.getBlogUrl(), "/") + comment.getPost().getUrl());
            item.setDescription(buildShortContent(comment.getContent()));
            item.setPubDate(formatDate(comment.getDate()));
            item.setAuthor(comment.getAuthorEmail());
            items.add(item);
        }
        return items;
    }

    private synchronized String formatDate(Date date) {
        return RFC822_DATE_FORMAT.format(date);
    }

    private String buildShortContent(String content) {
        return StringUtils.abbreviate(content, 300);
    }

}