examtabledao.java

在线考试系统

package exam.dao;

import java.util.Date;
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
 * ExamTable 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 exam.dao.ExamTable
 * @author MyEclipse Persistence Tools
 */

public class ExamTableDAO extends BaseHibernateDAO {
	private static final Log log = LogFactory.getLog(ExamTableDAO.class);
	// property constants
	public static final String EXAMNAME = "examname";
	public static final String TESPPAPERTOTALPOINT = "tesppapertotalpoint";
	public static final String EXAMEXPLAIN = "examexplain";
	public static final String EVERYQUESTIONPOINT = "everyquestionpoint";
	public static final String EXAMPOSITION = "examposition";

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

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

	public ExamTable findById(exam.dao.ExamTableId id) {
		log.debug("getting ExamTable instance with id: " + id);
		try {
			ExamTable instance = (ExamTable) getSession().get(
					"exam.dao.ExamTable", id);
			return instance;
		} catch (RuntimeException re) {
			log.error("get failed", re);
			throw re;
		}
	}

	public List findByExample(ExamTable instance) {
		log.debug("finding ExamTable instance by example");
		try {
			List results = getSession().createCriteria("exam.dao.ExamTable")
					.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 ExamTable instance with property: " + propertyName
				+ ", value: " + value);
		try {
			String queryString = "from ExamTable 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 findByExamname(Object examname) {
		return findByProperty(EXAMNAME, examname);
	}

	public List findByTesppapertotalpoint(Object tesppapertotalpoint) {
		return findByProperty(TESPPAPERTOTALPOINT, tesppapertotalpoint);
	}

	public List findByExamexplain(Object examexplain) {
		return findByProperty(EXAMEXPLAIN, examexplain);
	}

	public List findByEveryquestionpoint(Object everyquestionpoint) {
		return findByProperty(EVERYQUESTIONPOINT, everyquestionpoint);
	}

	public List findByExamposition(Object examposition) {
		return findByProperty(EXAMPOSITION, examposition);
	}

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

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

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

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