jobsdao.java

带分页显示的简单例子 Hibernate

package fmq.model.dao;

import org.hibernate.Transaction;
import org.hibernate.Session;
import fmq.model.bo.*;
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.criterion.Example;
import fmq.model.*;

/**
 * Data access object (DAO) for domain model class Jobs.
 * 
 * @see fmq.model.dao.Jobs
 * @author MyEclipse Persistence Tools
 */

public class JobsDAO extends BaseHibernateDAO {
	private static final Log log = LogFactory.getLog(JobsDAO.class);

	public void save(Jobs transientInstance) {
		log.debug("saving Jobs instance");
		
		/*
		try{			
			getSession().save(transientInstance);
			getSession().flush();
			HibernateSessionFactory.closeSession();
		*/		
		
		
		Session s1 = getSession();
		Transaction  tran1 = s1.beginTransaction();
		try {		
			s1.save(transientInstance);
			tran1.commit();
			//s1.flush();
			log.debug("save successful");
		} catch (RuntimeException re) {
			log.error("save failed", re);
			tran1.rollback();
			throw re;
		} finally{
			s1.close();			
		}
	}

	public void delete(Jobs persistentInstance) {
		log.debug("deleting Jobs instance");
		try {
			getSession().delete(persistentInstance);
			log.debug("delete successful");
		} catch (RuntimeException re) {
			log.error("delete failed", re);
			throw re;
		}
	}

	public Jobs findById(java.lang.Short id) {
		log.debug("getting Jobs instance with id: " + id);
		try {
			Jobs instance = (Jobs) getSession().get("fmq.model.bo.Jobs", id);
			return instance;
		} catch (RuntimeException re) {
			log.error("get failed", re);
			throw re;
		}
	}

	public List findByExample(Jobs instance) {
		log.debug("finding Jobs instance by example");
		try {
			List results = getSession().createCriteria("fmq.model.dao.Jobs")
					.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 Jobs instance with property: " + propertyName
				+ ", value: " + value);
		try {
			String queryString = "from Jobs 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 findAll() {
		log.debug("finding all Jobs instances");
		try {
			String queryString = "from Jobs";
			Query queryObject = getSession().createQuery(queryString);
			// 分页数据
			//queryObject.setFirstResult(10);
			//queryObject.setMaxResults(5);
			return queryObject.list();
		} catch (RuntimeException re) {
			log.error("find all failed", re);
			throw re;
		}
	}

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

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

	public void attachClean(Jobs instance) {
		log.debug("attaching clean Jobs instance");
		try {
			getSession().lock(instance, LockMode.NONE);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}
}