achievementdao.java

一个OA系统

package com.zhou.dao;

import com.zhou.po.Achievement;

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;

/**
 * A data access object (DAO) providing persistence and search support for
 * Achievement 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 com.zhou.po.Achievement
 * @author MyEclipse Persistence Tools
 */

public class AchievementDAO extends BaseHibernateDAO {
	private static final Log log = LogFactory.getLog(AchievementDAO.class);
	// property constants
	public static final String STUDENTID = "studentid";
	public static final String RESULTS = "results";

	public void save(Achievement transientInstance) {
		log.debug("saving Achievement instance");
		try {
			getSession().beginTransaction().begin();
			getSession().save(transientInstance);
			getSession().beginTransaction().commit();
			log.debug("save successful");
		} catch (RuntimeException re) {
			log.error("save failed", re);
			throw re;
		}
	}

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

	public Achievement findById(java.lang.Long id) {
		log.debug("getting Achievement instance with id: " + id);
		try {
			Achievement instance = (Achievement) getSession().get(
					"com.zhou.po.Achievement", id);
			return instance;
		} catch (RuntimeException re) {
			log.error("get failed", re);
			throw re;
		}
	}

	public List findByExample(Achievement instance) {
		log.debug("finding Achievement instance by example");
		try {
			List results = getSession().createCriteria(
					"com.zhou.po.Achievement").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 Achievement instance with property: " + propertyName
				+ ", value: " + value);
		try {
			String queryString = "from Achievement 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 findByStudentid(Object studentid) {
		return findByProperty(STUDENTID, studentid);
	}

	public List findByResults(Object results) {
		return findByProperty(RESULTS, results);
	}

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

	public List findAll2(String userid) {
		log.debug("finding all Achievement instances");
		try {
			String queryString = "from Achievement a where a.userinfo.userid = "+userid;
			Query queryObject = getSession().createQuery(queryString);
			return queryObject.list();
		} catch (RuntimeException re) {
			log.error("find all failed", re);
			throw re;
		}
	}
	
	public Achievement merge(Achievement detachedInstance) {
		log.debug("merging Achievement instance");
		try {
			Achievement result = (Achievement) getSession().merge(
					detachedInstance);
			log.debug("merge successful");
			return result;
		} catch (RuntimeException re) {
			log.error("merge failed", re);
			throw re;
		}
	}

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

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