linksdao.java

openblog是一个博客管理系统

package org.openblog.hibernate;

import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.LockMode;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.criterion.Example;

import org.openblog.hibernate.HibernateSessionFactory;
/**
 * A data access object (DAO) providing persistence and search support for Links
 * entities. Transaction control of the save(), update() and delete() operations
 * can directly support Spring container-managed transactions or they can be
 * augmented to handle user-managed Spring transactions. Each of these methods
 * provides additional information for how to configure it for the desired type
 * of transaction control.
 * 
 * @see org.openblog.hibernate.Links
 * @author MyEclipse Persistence Tools
 */

public class LinksDAO extends BaseHibernateDAO {
	private static final Log log = LogFactory.getLog(LinksDAO.class);
	// property constants
	public static final String LINKS_NAME = "linksName";
	public static final String LINKS_URL = "linksUrl";

	public void save(Links transientInstance) {
	/*	log.debug("saving Links instance");
		try {
			getSession().save(transientInstance);
			log.debug("save successful");
		} catch (RuntimeException re) {
			log.error("save failed", re);
			throw re;
		}*/
		Transaction trans=null;
		log.debug("saving XyArticleSort instance");
		try {
			trans = getSession().beginTransaction();
			getSession().save(transientInstance);
			getSession().flush();
			trans.commit();
			log.debug("save successful");
		} catch (RuntimeException re) {
			if(trans!=null) trans.rollback();
			log.error("save failed", re);
			throw re;
		}
	}

	public void delete(Links persistentInstance) {
		Transaction trans =null;
		log.debug("deleting Links instance");
		if(persistentInstance!=null)
		{
		try {
			trans = getSession().beginTransaction();
			getSession().delete(persistentInstance);
			//getSession().flush();
			trans.commit();
			log.debug("delete successful");
		} catch (RuntimeException re) {
			if(trans!=null) trans.rollback();
			log.error("delete failed", re);
			throw re;
		}
		}
	}

	public Links findById(java.lang.Integer id) {
		log.debug("getting Links instance with id: " + id);
		try {
			Links instance = (Links) getSession().get(
					"org.openblog.hibernate.Links", id);
			return instance;
		} catch (RuntimeException re) {
			log.error("get failed", re);
			throw re;
		}
	}

	public List findByExample(Links instance) {
		log.debug("finding Links instance by example");
		try {
			List results = getSession().createCriteria(
					"org.openblog.hibernate.Links").add(
					Example.create(instance)).list();
			log.debug("find by example successful, result size: "
					+ results.size());
			return results;
		} catch (RuntimeException re) {
			log.error("find by example failed", re);
			throw re;
		}
	}
	public List findByProperty(String propertyName, Object value) {
		log.debug("finding Links instance with property: " + propertyName
				+ ", value: " + value);
		try {
			String queryString = "from Links as model where model."
					+ propertyName + "= ?";
			Query queryObject = getSession().createQuery(queryString);
			queryObject.setParameter(0, value);
			return queryObject.list();
		} catch (RuntimeException re) {
			log.error("find by property name failed", re);
			throw re;
		}
	}

	public List findByLinksName(Object linksName) {
		return findByProperty(LINKS_NAME, linksName);
	}

	public List findByLinksUrl(Object linksUrl) {
		return findByProperty(LINKS_URL, linksUrl);
	}

	public List findAll() {
		log.debug("finding all Links instances");
		try {
			String queryString = "from Links";
			Query queryObject = getSession().createQuery(queryString);
			return queryObject.list();
		} catch (RuntimeException re) {
			log.error("find all failed", re);
			throw re;
		}
	}

	public Links merge(Links detachedInstance) {
		log.debug("merging Links instance");
		try {
			Links result = (Links) getSession().merge(detachedInstance);
			log.debug("merge successful");
			return result;
		} catch (RuntimeException re) {
			log.error("merge failed", re);
			throw re;
		}
	}

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

	public void attachClean(Links instance) {
		log.debug("attaching clean Links instance");
		try {
			getSession().lock(instance, LockMode.NONE);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}
	public static void main(String args[])
	{
		LinksDAO links = new LinksDAO();
		List list = links.findAll();
		for(int i=0 ; i<list.size();i++)
		{
			
			Links link = (Links)list.get(i);
			System.out.println(link.getLinksName());
			System.out.println(link.getLinksUrl());
		}
	}
}