messagedao.java

一个网上购物商城系统

package tarena.dao;

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 tarena.entity.Message;

/**
 * Data access object (DAO) for domain model class Message.
 * 
 * @see tarena.entity.Message
 * @author MyEclipse Persistence Tools
 */

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

	// property constants
	public static final String SENDNAME = "sendname";

	public static final String RECEIVENAME = "receivename";

	public static final String TITLE = "title";

	public static final String CONTENT = "content";

	public static final String SAVEBOX = "savebox";

	public static final String ISREAD = "isread";

	public static final String MESSTYPE = "messtype";

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

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

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

	public List findByExample(Message instance) {
		log.debug("finding Message instance by example");
		try {
			List results = getSession().createCriteria("tarena.entity.Message")
					.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 Message instance with property: " + propertyName
				+ ", value: " + value);
		try {
			String queryString = "from Message 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 findBySendname(Object sendname) {
		return findByProperty(SENDNAME, sendname);
	}

	public List findByReceivename(Object receivename) {
		return findByProperty(RECEIVENAME, receivename);
	}

	public List findByTitle(Object title) {
		return findByProperty(TITLE, title);
	}

	public List findByContent(Object content) {
		return findByProperty(CONTENT, content);
	}

	public List findBySavebox(Object savebox) {
		return findByProperty(SAVEBOX, savebox);
	}

	public List findByIsread(Object isread) {
		return findByProperty(ISREAD, isread);
	}

	public List findByMesstype(Object messtype) {
		return findByProperty(MESSTYPE, messtype);
	}

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

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

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

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