messagelistaction.java

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/*
 * 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.presentation.action;

import javax.servlet.http.HttpServletRequest;

import org.apache.log4j.Logger;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;

import com.jdon.controller.WebAppUtil;
import com.jdon.controller.model.ModelIF;
import com.jdon.controller.model.PageIterator;
import com.jdon.jivejdon.model.ForumMessage;
import com.jdon.jivejdon.model.ForumThread;
import com.jdon.jivejdon.presentation.form.MessageListForm;
import com.jdon.jivejdon.service.AccountService;
import com.jdon.jivejdon.service.ForumMessageQueryService;
import com.jdon.jivejdon.service.ForumMessageService;
import com.jdon.strutsutil.FormBeanUtil;
import com.jdon.strutsutil.ModelListAction;
import com.jdon.strutsutil.ModelListForm;
import com.jdon.util.UtilValidate;

/**
 * @author <a href="mailto:[e-mail]">banq</a>
 *
 */
public class MessageListAction extends ModelListAction {
	private final static Logger logger = Logger.getLogger(MessageListAction.class);

	private final static String isNeedAuth = "isNeedAuth";

	/* (non-Javadoc)
	 * @see com.jdon.strutsutil.ModelListAction#getPageIterator(javax.servlet.http.HttpServletRequest, int, int)
	 */
	public PageIterator getPageIterator(HttpServletRequest request, int start, int count) {
		logger.debug("enter getPageIterator");
		String threadId = request.getParameter("thread");
		if ((threadId == null) || (!UtilValidate.isInteger(threadId))) {
			logger.error(" getPageIterator error : threadId is null");
			return new PageIterator();
		}

		String messageId = request.getParameter("message");
		return getMessages(new Long(threadId), start, count, messageId, request);
	}

	/**
	 *   // Determine if we need to adjust the start index of the thread iterator.
	// If we're passed a message ID, we need to show the thread page that
	// messageID is contained on.
	 * this method has not good performance. not frequency call it
	 */
	private PageIterator getMessages(Long threadId, int start, int count, String messageId, HttpServletRequest request) {
		logger.debug("enter getMessages2 messageId=" + messageId);
		ForumMessageQueryService forumMessageQueryService = (ForumMessageQueryService) WebAppUtil.getService("forumMessageQueryService", request);
		if ((threadId == null) || (threadId.longValue() == 0))
			return new PageIterator();
		if (UtilValidate.isEmpty(messageId) || !UtilValidate.isInteger(messageId))
			return forumMessageQueryService.getMessages(threadId, start, count);

		Long messageIdL = Long.parseLong(messageId);
		start = 0;
		boolean found = false;
		PageIterator pi = forumMessageQueryService.getMessages(threadId, start, count);
		int allCount = pi.getAllCount();
		while ((start < allCount) && (!found)) {//loop all 
			while (pi.hasNext()) {
				Long messageIdT = (Long) pi.next();
				if (messageIdT.longValue() == messageIdL.longValue()) {
					found = true;
					break;
				}
			}
			if (found)
				break;
			start = start + count;
			logger.debug("start = " + start + " count = " + count);
			pi = forumMessageQueryService.getMessages(threadId, start, count);
		}

		if (found) {
			MessageListForm messageListForm = (MessageListForm) FormBeanUtil.lookupActionForm(request, "messageListForm"); //same as struts-config-message.xml
			if (messageListForm != null)
				messageListForm.setStart(start);//diaplay
			return forumMessageQueryService.getMessages(threadId, start, count);
		} else {
			logger.debug("not found the messageId =" + messageId);
			return new PageIterator();
		}
	}

	/* (non-Javadoc)
	 * @see com.jdon.strutsutil.ModelListAction#findModelByKey(javax.servlet.http.HttpServletRequest, java.lang.Object)
	 */
	public Object findModelIFByKey(HttpServletRequest request, Object key) {
		logger.debug("enter findModelByKey");
		ForumMessageService forumMessageService = (ForumMessageService) WebAppUtil.getService("forumMessageService", request);
		//getXXX can be intercepted by cacheinterceptor before accessing ForumMessageServiceShell
		ForumMessage forumMessage = forumMessageService.getMessage((Long) key);
		if (!forumMessage.isFiltered())//         	
			forumMessage = forumMessageService.findFilteredMessage((Long) key);
		return forumMessage;
	}

	/**
	 * set ModelListAction donot load directly a model from cache.
	 */
	protected boolean isEnableCache() {
		return false;
	}

	public void customizeListForm(ActionMapping actionMapping, ActionForm actionForm, HttpServletRequest request, ModelListForm modelListForm) throws Exception {		
		String threadId = request.getParameter("thread");
		if ((threadId == null) || (!UtilValidate.isInteger(threadId))) {
			logger.error("customizeListForm error : threadId is null");
			return;
		}
		ForumMessageService forumMessageService = (ForumMessageService) WebAppUtil.getService("forumMessageService", request);
		ForumThread forumThread = forumMessageService.getThread(new Long(threadId));
		modelListForm.setOneModel(forumThread);

		MessageListForm messageListForm = (MessageListForm) actionForm;
		boolean[] authenticateds = new boolean[messageListForm.getList().size()];
		messageListForm.setAuthenticateds(authenticateds);

		AccountService accountService = (AccountService) WebAppUtil.getService("accountService", request);
		com.jdon.jivejdon.model.Account account = accountService.getloginAccount();
		int i = 0;
		if (account != null) {//if login need auth check
			for (Object o : messageListForm.getList()) {
				ForumMessage forumMessage = (ForumMessage) o;
				forumMessageService = (ForumMessageService) WebAppUtil.getService("forumMessageService", request);
				boolean result = forumMessageService.checkIsAuthenticated(forumMessage);
				authenticateds[i] = result;
				i++;
			}
		}
	}

}