当cms的扩展模型满足不了客户需求时，我们需要在cms的文章、视频、音频等功能的基础上扩展一些功能，以保证扩展功能可以和视频、音频、文章密切关联来实现客户的需求。开发实例如下：

1. 设计表结构，关联视频、文章、音频的ID，以视频为例：

2. 添加扩展项，继承扩展点com.zving.contentcore.ContentExtendUI

　　java代码如下：

　　package com.zving.wskxly.extend; import com.zving.framework.extend.ExtendException; import com.zving.framework.extend.action.ZhtmlContext; import com.zving.framework.extend.action.ZhtmlExtendAction; public class VideoRelaQuestionAction extends ZhtmlExtendAction { public boolean isUsable() { // TODO Auto-generated method stub return true; } @Override public void execute(ZhtmlContext context) throws ExtendException { context.include("videorela/videoRelaQuestion.zhtml"); context.include("videorela/videoRelaGame.zhtml"); } }

　　页面代码如下：

3. 添加class类，实现和视频、音频、文章关联关系处理，继承扩展点：com.zving.contentcore.BeforeContentSave

　　关联关系处理事例如下：

package com.zving.wskxly.extend; import java.util.Date; import com.zving.contentcore.IContent; import com.zving.contentcore.extend.BeforeContentSave; import com.zving.framework.User; import com.zving.framework.collection.Mapx; import com.zving.framework.data.Transaction; import com.zving.framework.orm.DAOSet; import com.zving.framework.utility.LogUtil; import com.zving.framework.utility.ObjectUtil; import com.zving.platform.pub.NoUtil; import com.zving.schema.ZWVideoGame; public class VideoRelaGameSave extends BeforeContentSave{ public boolean isUsable() { return true; } @Override public void execute(Transaction tran, IContent content){ String contentType = content.getContentTypeID(); if(!"Video".equals(contentType)){ return; } long VideoID = content.getID(); if(ObjectUtil.empty(VideoID)||VideoID==0){ LogUtil.info("视频ID为空，无法向数据库中插入视频相关游戏记录。"); return; } Mapx<String,Object> dataMap = content.getValues(); String GameDescription = dataMap.getString("GameDescription"); String GameInfo = dataMap.getString("GameInfo"); String GameGoal = dataMap.getString("GameGoal"); ZWVideoGame zwVideoGame = new ZWVideoGame(); zwVideoGame.setVideoID(VideoID); DAOSet<ZWVideoGame> set = zwVideoGame.query(); if(ObjectUtil.empty(set)||set.size()<=0){ zwVideoGame.setID(NoUtil.getMaxID("ZWVideoGameID")); zwVideoGame.setVideoID(VideoID); zwVideoGame.setGameDescription(GameDescription); zwVideoGame.setGameInfo(GameInfo); zwVideoGame.setGameGoal(GameGoal); zwVideoGame.setAddUser(User.getUserName()); zwVideoGame.setAddTime(new Date()); tran.add(zwVideoGame, Transaction.INSERT); }else{ zwVideoGame = set.get(0); zwVideoGame.setGameDescription(GameDescription); zwVideoGame.setGameInfo(GameInfo); zwVideoGame.setGameGoal(GameGoal); zwVideoGame.setAddUser(User.getUserName()); zwVideoGame.setModifyTime(new Date()); zwVideoGame.setModifyUser(User.getUserName()); tran.add(zwVideoGame, Transaction.UPDATE); } } }

　　要点：视频的ID从上下文获取，获取方式如下：content.getID();

　　注意：该class的Transaction事务不能提交，该事务会统一在BeforeContentSave扩展点提交。