newshelper.java

一个免费wap站

package com.eline.wap.resource.client;


import com.eline.wap.common.model.Page;
import com.eline.wap.resource.dao.NewsDAO;
import com.eline.wap.resource.dao.ResourceDAOFactory;
import com.eline.wap.resource.exceptions.ResourceDAOSysException;
import com.eline.wap.resource.exceptions.ResourceException;
import com.eline.wap.resource.model.News;
import com.eline.wap.resource.model.NewsCondition;

public class NewsHelper {
private NewsDAO dao = null;
	
	public Page searchNews(NewsCondition condition, int start, int count) throws ResourceException {
		try {
			if (dao == null)
				dao = ResourceDAOFactory.getNewsDAO();
			return dao.searchNews(condition, start, count);
		} catch (ResourceDAOSysException e) {
			throw new ResourceException(e.getMessage());
		}
	}
	
	public News getNews(int newsId) throws ResourceException {
		try {
			if (dao == null)
				dao = ResourceDAOFactory.getNewsDAO();
			return dao.getNews(newsId);
		} catch (ResourceDAOSysException e) {
			throw new ResourceException(e.getMessage());
		}
	}
	
	public void createNews(News item) throws ResourceException {
		try {
			if (dao == null)
				dao = ResourceDAOFactory.getNewsDAO();
			dao.createNews(item);
		} catch (ResourceDAOSysException e) {
			throw new ResourceException(e.getMessage());
		}

	}
	
	public void updateNews(News item) throws ResourceException{
		try{
			if (dao == null)
				dao = ResourceDAOFactory.getNewsDAO();
			dao.updateNews(item);
		}catch (ResourceDAOSysException e) {
			throw new ResourceException(e.getMessage());
		}
	}
	
	public void deleteItem(int itemId) throws ResourceException {
		try {
			if (dao == null)
				dao = ResourceDAOFactory.getNewsDAO();
			dao.deleteNews(itemId);
		} catch (ResourceDAOSysException e) {
			throw new ResourceException(e.getMessage());
		}
	}
}