jforum example source code file (HottestTopicsAction.java)

This example jforum source code file (HottestTopicsAction.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - jforum tags/keywords

arraylist, command, dataaccessdriver, forum, forum, hottesttopicsaction, integer, integer, iterator, list, list, map, topic, topic, util

The jforum HottestTopicsAction.java source code

/*
 * Copyright (c) JForum Team
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, 
 * with or without modification, are permitted provided 
 * that the following conditions are met:
 * 
 * 1) Redistributions of source code must retain the above 
 * copyright notice, this list of conditions and the 
 * following  disclaimer.
 * 2)  Redistributions in binary form must reproduce the 
 * above copyright notice, this list of conditions and 
 * the following disclaimer in the documentation and/or 
 * other materials provided with the distribution.
 * 3) Neither the name of "Rafael Steil" nor 
 * the names of its contributors may be used to endorse 
 * or promote products derived from this software without 
 * specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT 
 * HOLDERS AND CONTRIBUTORS "AS IS" AND ANY 
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, 
 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 
 * THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE 
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES 
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 
 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 
 * IN CONTRACT, STRICT LIABILITY, OR TORT 
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
 * 
 * Created on Mar 02, 2007
 * The JForum Project
 * http://www.jforum.net
 */
package net.jforum.view.forum;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import net.jforum.Command;
import net.jforum.JForumExecutionContext;
import net.jforum.dao.DataAccessDriver;
import net.jforum.dao.UserDAO;
import net.jforum.entities.Forum;
import net.jforum.entities.Topic;
import net.jforum.entities.User;
import net.jforum.repository.ForumRepository;
import net.jforum.repository.TopicRepository;
import net.jforum.util.I18n;
import net.jforum.util.preferences.ConfigKeys;
import net.jforum.util.preferences.SystemGlobals;
import net.jforum.util.preferences.TemplateKeys;
import net.jforum.view.forum.common.TopicsCommon;
import net.jforum.view.forum.common.ViewCommon;

/**
 * Display a list of hottest Topics
 * 
 * @author James Yong
 * @author Rafael Steil
 * @author Andowson Chang 
 * @version $Id: HottestTopicsAction.java,v 1.2 2007/08/20 19:35:52 rafaelsteil Exp $
 */
public class HottestTopicsAction extends Command 
{
	private List forums;

	public void list()
	{
		int postsPerPage = SystemGlobals.getIntValue(ConfigKeys.POSTS_PER_PAGE);

		this.setTemplateName(TemplateKeys.HOTTEST_LIST);
		
		this.context.put("postsPerPage", new Integer(postsPerPage));
		this.context.put("topics", this.topics());
		this.context.put("forums", this.forums);
		this.context.put("pageTitle", I18n.getMessage("ForumBase.hottestTopics"));

		TopicsCommon.topicListingBase();
		this.request.setAttribute("template", null);
	}
	
	List topics()
	{
		int postsPerPage = SystemGlobals.getIntValue(ConfigKeys.POSTS_PER_PAGE);
		List tmpTopics = TopicRepository.getHottestTopics();
		
		this.forums = new ArrayList(postsPerPage);

		for (Iterator iter = tmpTopics.iterator(); iter.hasNext(); ) {
			Topic t = (Topic)iter.next();
			
			if (TopicsCommon.isTopicAccessible(t.getForumId())) {
				// Get name of forum that the topic refers to
				Forum f = ForumRepository.getForum(t.getForumId());
				forums.add(f);
			}
			else {
				iter.remove();
			}
		}
		
		JForumExecutionContext.getRequest().removeAttribute("template");
		
		return TopicsCommon.prepareTopics(tmpTopics);
	}

	public void showTopicsByUser() 
	{
		DataAccessDriver da = DataAccessDriver.getInstance();
		
		UserDAO udao = da.newUserDAO();
		User u = udao.selectById(this.request.getIntParameter("user_id"));
		
		if (u.getId() == 0) {
			this.context.put("message", I18n.getMessage("User.notFound"));
			this.setTemplateName(TemplateKeys.USER_NOT_FOUND);
			return;
		} 
			
		TopicsCommon.topicListingBase();
		
		int start = ViewCommon.getStartPage();
		int topicsPerPage = SystemGlobals.getIntValue(ConfigKeys.TOPICS_PER_PAGE);
		int postsPerPage = SystemGlobals.getIntValue(ConfigKeys.POSTS_PER_PAGE);
		
		this.setTemplateName(TemplateKeys.HOTTEST_USER_TOPICS_SHOW);
		
		int totalTopics = da.newTopicDAO().countUserTopics(u.getId());
		
		this.context.put("u", u);
		this.context.put("pageTitle", I18n.getMessage("ForumListing.userTopics") + " " + u.getUsername());
		
		this.context.put("postsPerPage", new Integer(postsPerPage));
		
		List topics = da.newTopicDAO().selectByUserByLimit(u.getId(),start,topicsPerPage);
		
		List l = TopicsCommon.prepareTopics(topics);
		Map forums = new HashMap();
		
		for (Iterator iter = l.iterator(); iter.hasNext(); ) {
			Topic t = (Topic)iter.next();
			
			Forum f = ForumRepository.getForum(t.getForumId());
			
			if (f == null) {
				iter.remove();
				totalTopics--;
				continue;
			}
			
			forums.put(new Integer(t.getForumId()), f);
		}
		
		this.context.put("topics", l);
		this.context.put("forums", forums);
		
		ViewCommon.contextToPagination(start, totalTopics, topicsPerPage);
	}
}