package exam.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;

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

public class QuestionsubjectTableDAO extends BaseHibernateDAO {
	private static final Log log = LogFactory
			.getLog(QuestionsubjectTableDAO.class);
	// property constants
	public static final String QUESTIONSUBJECTNAME = "questionsubjectname";
	public static final String QUESTIONSUBJECTEXPLAIN = "questionsubjectexplain";
	public static final String QUESTIONSUBJECTOPENFLAG = "questionsubjectopenflag";

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

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

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

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

	public List findByQuestionsubjectexplain(Object questionsubjectexplain) {
		return findByProperty(QUESTIONSUBJECTEXPLAIN, questionsubjectexplain);
	}

	public List findByQuestionsubjectopenflag(Object questionsubjectopenflag) {
		return findByProperty(QUESTIONSUBJECTOPENFLAG, questionsubjectopenflag);
	}

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

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

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

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