tuserdao.java

swnglu数据库连接统struts和hinernate

package hibernatemodel;

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 TUser
 * 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 hibernatemodel.TUser
 * @author MyEclipse Persistence Tools
 */

public class TUserDAO extends BaseHibernateDAO {
	private static final Log log = LogFactory.getLog(TUserDAO.class);
	// property constants
	public static final String USERNAME = "username";
	public static final String PASSWORD = "password";

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

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

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

	public List findByExample(TUser instance) {
		log.debug("finding TUser instance by example");
		try {
			List results = getSession().createCriteria("hibernatemodel.TUser")
					.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 TUser instance with property: " + propertyName
				+ ", value: " + value);
		try {
			String queryString = "from TUser 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 findByUserandPwd(Object uservalue,Object pwdvalue)
	{
		log.debug("finding TUser instance with property: " + USERNAME
				+ ", value: " + uservalue);
		try {
			String queryString = "from TUser as model where model."
					+ USERNAME + "= ? and model."+PASSWORD+"=?";
		Query queryObject = getSession().createQuery(queryString);
		queryObject.setParameter(0, uservalue);
		queryObject.setParameter(1, pwdvalue);
		return queryObject.list();
	} catch (RuntimeException re) {
		log.error("find by property name failed", re);
		throw re;
	}
	}

	
	
	
	public List findByUsername(Object username) {
		return findByProperty(USERNAME, username);
	}

	public List findByPassword(Object password) {
		return findByProperty(PASSWORD, password);
	}

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

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

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

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