UserFriendCommentRSSServlet.java

package net.spy.diggwatch;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import net.spy.digg.Comment;
import net.spy.digg.Story;
import net.spy.diggwatch.CommentFeed.CommentAdaptor;
import net.spy.jwebkit.rss.RSSItem;

public class UserFriendCommentRSSServlet extends BaseDiggServlet {

	@Override
	protected void processPath(String user, HttpServletRequest req,
			HttpServletResponse res) throws Exception {
		List<Comment> comments = new ArrayList<Comment>(
			di.getCommentsFromFriends(user));
		sendXml(new FriendCommentFeed("friends of " + user,
				"Comments from friends of " + user, comments), res);
	}

	@Override
	protected String getEtag(String path) throws Exception {
		return getEtagFromEvents(di.getCommentsFromFriends(path));
	}

	public static class FriendCommentFeed extends CommentFeed {
		public FriendCommentFeed(String p, String title, Collection<Comment> c) {
			super(p, title, c);
		}

		@Override
		protected RSSItem adaptComment(Story s, Comment c) {
			return new FriendCommentAdaptor(path, s, c);
		}
	}

	public static class FriendCommentAdaptor extends CommentAdaptor {

		public FriendCommentAdaptor(String domain, Story s, Comment c) {
			super(domain, s, c);
		}

		@Override
		public String getTitle() {
			String rv = "Comment on ``" + story.getTitle() + "'' by "
					+ comment.getUser() + " (+" + comment.getDiggsUp() + "/-"
					+ comment.getDiggsDown() + ")";
			return rv;
		}

	}

}