threaddirector.java

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/*
 * Copyright 2007 the original author or jdon.com
 *
 * 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.builder;

import org.apache.log4j.Logger;

import com.jdon.jivejdon.model.Forum;
import com.jdon.jivejdon.model.ForumMessage;
import com.jdon.jivejdon.model.ForumThread;

public class ThreadDirector {
	private final static Logger logger = Logger.getLogger(ThreadDirector.class);

	private final ThreadBuilder forumThreadBuilder;

	private final ForumAbstractFactory forumAbstractFactory;

	public ThreadDirector(ForumAbstractFactory forumAbstractFactory, ThreadBuilder forumThreadBuilder) {
		this.forumAbstractFactory = forumAbstractFactory;
		this.forumThreadBuilder = forumThreadBuilder;
	}

	public ForumThread getThread(Long threadId) {
		try {
			return getThread(threadId, null, null);
		} catch (Exception e) {
			return null;
		}
	}

	/**
	 * return a full ForumThread one ForumThread has one rootMessage need solve
	 * the realtion with Forum rootForumMessage lastPost
	 * 
	 * @param threadId
	 * @return
	 */
	public ForumThread getThread(final Long threadId, final ForumMessage rootForumMessage, final Forum forum) throws Exception {
		logger.debug("TH----> enter getThread, threadId=" + threadId);
		ForumThread forumThread = (ForumThread) forumThreadBuilder.create(threadId);
		if (forumThread == null) {
			logger.error("no this forumThread in database threadId=" + threadId);
			return null;
		}
		
		if (forumThread.isEmbedded())
			return forumThread;

		construct(forumThread, rootForumMessage, forum);
		forumThread.setEmbedded(true);
		return forumThread;
	}
	

	public void construct(ForumThread forumThread, ForumMessage rootForumMessage, Forum forum) throws Exception {
		try {
			logger.debug("ForumThread construct :<Embed ForumThread---->  start, threadId=" + forumThread.getThreadId());
			forumThreadBuilder.buildProperties(forumThread);
			//buildTreeModel at first called
			forumThreadBuilder.buildTreeModel(forumThread);

			//in buildPart will create rootForumMessage that need buildInitState's TreeModel
			forumThreadBuilder.buildRootMessage(forumThread, rootForumMessage, forum);
			forumThreadBuilder.buildForum(forumThread, rootForumMessage, forum);
			
			forumThreadBuilder.buildState(forumThread, forumThread.getRootMessage(), forumAbstractFactory.messageDirector);
			logger.debug("ForumThread construct: ok threadId=" + forumThread.getThreadId());
		} catch (Exception e) {
			String error = e + " construct forumThreadId=" + forumThread.getThreadId();
			logger.error(error);
			throw new Exception(error);
		}
	}

}