u07tfilebo.java

持久层hibernate技术使用的一个例子

package cn.hope.front.bo;

import java.util.List;

import org.apache.log4j.Logger;

import cn.hope.front.pojo.TFile;
import cn.hope.front.pojo.U07CommonListVO;
import cn.hope.front.pojo.dao.TFileDAO;
import cn.hope.front.util.U07Page;

public class U07TFileBO {
	Logger log = Logger.getLogger(U07TFileBO.class.getName());

	private TFileDAO tFileDAO = new TFileDAO();

	public int insert(TFile tFile) throws Exception {
		int flag = 0;
		try {
			flag = tFileDAO.insert(tFile).intValue();
		} catch (Exception e) {
			log.error(e);
			e.printStackTrace();
			throw new Exception(e);
		}
		return flag;
	}

	public TFile searchByKey(Integer id) throws Exception {
		TFile tf = null;
		try {
			tf = tFileDAO.searchByKey(id);
		} catch (Exception e) {
			log.error(e);
			e.printStackTrace();
			throw new Exception(e);
		}
		return tf;
	}
	
	public TFile download(Integer id)throws Exception
	{
		TFile tf=null;
		try
		{
			tf=this.searchByKey(id);
			int i=tf.getTfDtimes().intValue()+1;
			tf.setTfDtimes(new Integer(i));
			tFileDAO.update(tf);
		}
		catch(Exception e)
		{
			log.error(e);
			e.printStackTrace();
			throw new Exception(e);
		}
		return tf;
	}
	
	public U07CommonListVO serach(TFile tFile, int start, boolean isEq)
			throws Exception {
		U07CommonListVO cl_vo = new U07CommonListVO();
		int range = 10;// 每页显示记录数
		int count = 0;// 总记录数
		List list = null;// 查询得到的结果集
		U07Page page = new U07Page();// 分页
		String fenyeStr = "";
		try {
			list = tFileDAO.search(tFile, start, range, isEq);
			count = tFileDAO.getCount();
			cl_vo.setRs(list);
			cl_vo.setCount(count);
			cl_vo.setStart(start);
			cl_vo.setRange(range);

			fenyeStr = page.fenye(cl_vo);
			cl_vo.setFenye(fenyeStr);
			cl_vo.setCurrentPage(page.getCurrentPage());
			cl_vo.setTotalPage(page.getTotalPage());
			cl_vo.setStartSub(page.getStartSub());
			cl_vo.setOverSub(page.getOverSub());
		} catch (Exception e) {
			log.error(e);
			e.printStackTrace();
			throw new Exception(e);
		}
		return cl_vo;
	}
}