e081cdebc0ae001c1cf0ed8a423fa3fa

来自「《v512工作室_Java高端培训系列视频》(Java JSP Servlet 」· 代码 · 共 57 行

package com.v512.guestbook.dao.hibernate;

import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

import com.v512.guestbook.dao.GuestbookDao;
import com.v512.guestbook.model.Guestbook;

public class GuestbookDaoHibernate extends HibernateDaoSupport implements GuestbookDao {
    private static final Log log = LogFactory.getLog(GuestbookDaoHibernate.class);

    public void delete(Long id) {
	log.debug("deleting Guestbook instance");
	try {
	    getHibernateTemplate().delete(getArticle(id));
	    log.debug("delete successful");
	} catch (RuntimeException re) {
	    log.error("delete failed", re);
	    throw re;
	}
    }

    public Guestbook getArticle(java.lang.Long id) {
	log.debug("getting Guestbook instance with id: " + id);
	try {
	    Guestbook instance = (Guestbook) getHibernateTemplate().get("com.v512.guestbook.model.Guestbook", id);
	    return instance;
	} catch (RuntimeException re) {
	    log.error("get failed", re);
	    throw re;
	}
    }

    public List getArticles() {
	log.debug("finding all Guestbook instances");
	try {
	    String queryString = "from Guestbook order by id";
	    return getHibernateTemplate().find(queryString);
	} catch (RuntimeException re) {
	    log.error("find all failed", re);
	    throw re;
	}
    }

    public void save(Guestbook instance) {
	log.debug("attaching dirty Guestbook instance");
	try {
	    getHibernateTemplate().saveOrUpdate(instance);
	    log.debug("attach successful");
	} catch (RuntimeException re) {
	    log.error("attach failed", re);
	    throw re;
	}
    }
}