forumbuilder.java

用Hibernate开发的JiveJdon

/*
 * Copyright 2003-2005 the original author or authors.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 */
package com.jdon.jivejdon.repository;

import org.apache.log4j.Logger;

import com.jdon.jivejdon.dao.ForumDao;
import com.jdon.jivejdon.dao.MessageDaoFacade;
import com.jdon.jivejdon.model.Forum;
import com.jdon.jivejdon.model.ForumMessage;
import com.jdon.jivejdon.model.ForumState;
import com.jdon.jivejdon.model.ForumThread;
import com.jdon.jivejdon.model.ForumThreadState;

/**
 * Build a full Forum or a ForumMessage or a ForumThread. Embed a Model into a
 * Model
 * 
 * @author <a href="mailto:banqJdon<AT>jdon.com">banq</a>
 * 
 */
public class ForumBuilder {
	private final static Logger logger = Logger.getLogger(ForumBuilder.class);

	private ForumDao forumDao;
	private MessageDaoFacade messageDaoFacade;

	/**
	 * @param forumDao
	 * @param messageDao
	 * @param accountDao
	 * @param messageQueryDao
	 */
	public ForumBuilder(ForumDao forumDao,MessageDaoFacade messageDaoFacade) {
		this.forumDao = forumDao;
		this.messageDaoFacade = messageDaoFacade;
	}

	public Forum getForum(Long forumId) {
		logger.debug(" enter getForum for forumId=" + forumId);
		Forum forum = forumDao.getForum(forumId);
		loadForumState(forum);
		return forum;
	}
	
	public ForumMessage getMessage(Long messageId) {
		ForumMessage message = messageDaoFacade.getMessageDao().getMessage(messageId);
		Long userId = message.getAccount().getUserId();
		try {
			int messageCountOfUser = messageDaoFacade.getMessageQueryDao().getMessageCountOfUser(userId);
			message.getAccount().setMessageCount(messageCountOfUser);
		}catch(Exception ex){
			ex.printStackTrace();
			logger.debug(ex);
		}
		return message;
	}
	
	public ForumThread getThread(Long threadId) {
		logger.debug(" enter getThread for threadId=" + threadId);
		ForumThread thread = messageDaoFacade.getMessageDao().getThread(threadId);
		loadThreadState(thread);
		try {
			Long rootMessageId = messageDaoFacade.getMessageQueryDao().getRootMessageId(threadId);
			ForumMessage message = getMessage(rootMessageId);
			thread.setRootMessage(message);
		}catch(Exception ex){
			ex.printStackTrace();
			logger.debug(ex);
		}
		return thread;
	}
	
	
	public void loadForumState(Forum forum) {
		logger.debug("enter loadForumState for forumId= "+forum.getForumId());
		try {
			
			ForumState forumState = new ForumState();
			int threadCount = forumDao.getThreadCount(forum.getForumId());
			int messageCount = forumDao.getMessageCount(forum.getForumId());
			
			forumState.setThreadCount(threadCount);
			forumState.setMessageCount(messageCount);
			
			Long lastMessageId = forumDao.getLastPostMessageId(forum.getForumId());
			logger.debug("the lastpostId for forumState is"+lastMessageId);
			if(lastMessageId != 0) {
				ForumMessage message = getMessage(lastMessageId);			
				forumState.setLastPost(message);
			}			
			forum.setForumState(forumState);
			
		}catch(Exception ex){
			ex.printStackTrace();
			logger.debug(ex);
		}		
	}

	/**
	 * get a state of a thread
	 * 
	 * @param forumThread
	 */
	public void loadThreadState(ForumThread forumThread) {
		logger.debug("enter loadForumState for threadId= "+forumThread.getThreadId());
		try {
			ForumThreadState forumThreadState = new ForumThreadState();
			int messageCount = messageDaoFacade.getMessageQueryDao().getMessageCount(forumThread.getThreadId());
			
			Long lastMessageId = messageDaoFacade.getMessageQueryDao().getLastPostMessageId(forumThread.getThreadId());
			logger.debug("the lastpostId for threadState is"+lastMessageId);
			ForumMessage message = getMessage(lastMessageId);
			
			forumThreadState.setMessageCount(messageCount);
			forumThreadState.setLastPost(message);
			forumThread.setForumThreadState(forumThreadState);
		}catch(Exception ex){
			ex.printStackTrace();
			logger.debug(ex);
		}		
	}


}