package com.gd.service.impl;
import com.gd.dao.NewsDAO;
import com.gd.dao.UserDAO;
import com.gd.service.Login;
import com.gd.service.Release;
import com.gd.vo.News;
import com.gd.vo.User;
//實現Release接口，用來注冊時保存，修改，刪除和查詢新聞消息
public class Releaseimpl implements Release {
	private NewsDAO newsDao;
	//保存新聞
	public void saveNews(News news){
		//把從數據庫得到的po轉換成vo
		com.gd.po.News newpo = new com.gd.po.News();
		newpo.setHead(news.getHead());
		newpo.setContent(news.getContent());
		newpo.setIssueuser(news.getLnkUser().getUsername());
		newpo.setIssuedate(news.getDate());
		newpo.setNewstype(news.getLnkNewsType().getid());
		newsDao.createNews(newpo);
	}
	//修改新聞
	public void updateNews(News news){
		//把從數據庫得到的po轉換成vo
		com.gd.po.News newpo = new com.gd.po.News();
		newpo.setHead(news.getHead());
		newpo.setContent(news.getContent());
		newpo.setIssueuser(news.getLnkUser().getUsername());
		newpo.setIssuedate(news.getDate());
		newpo.setNewstype(news.getLnkNewsType().getid());
		newsDao.updateNews(newpo);
	}
	//刪除新聞
	public void deleteNews(News news){
		//把從數據庫得到的po轉換成vo
		com.gd.po.News newpo = new com.gd.po.News();
		newpo.setHead(news.getHead());
		newpo.setContent(news.getContent());
		newpo.setIssueuser(news.getLnkUser().getUsername());
		newpo.setIssuedate(news.getDate());
		newpo.setNewstype(news.getLnkNewsType().getid());
		newsDao.deleteNews(newpo);
	}
	//根據新聞id獲取新聞
	public News queryNews(int id){
		//把從數據庫得到的po轉換成vo
		News news=new News();
		news.setHead(newsDao.queryNews(id).getHead());
		news.setContent(newsDao.queryNews(id).getContent());
		news.setLnkUser(getLogin().queryUser(newsDao.queryNews(id).getIssueuser()));
		news.setDate(newsDao.queryNews(id).getIssuedate());
		return news;
	}
	//用于實現依賴注入，把newsDao注入該類
	public void setNewsDao(NewsDAO newsDao){
		this.newsDao=newsDao;
	}
	public NewsDAO getNewsDao(){
		return this.newsDao;
	}
	//用于實現依賴注入，把login注入該類
	private Login login;
	public Login getLogin(){
		return login;
	}
	public void setLogin (Login login){
		this.login=login;
	}

}