examOnline/src/com/dao/SubjectDaoImpl.java

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package com.dao;

import java.util.List;

import org.hibernate.HibernateException;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.Transaction;

import sun.security.krb5.internal.PAEncTSEnc;

import com.entity.Subject;
import com.util.HibernateSessionFactory;
import com.util.Page;

public class SubjectDaoImpl  extends BaseDaoImpl implements SubjectDao {
	/**
	 * 根据id删除一条记录
	 */
	@Override
	public void deleteByID(int id) {
		Session session = HibernateSessionFactory.getSession();
		Subject subject = (Subject)session.get(Subject.class, id);//获取要删除的对象
		Transaction transaction = null;
		try {
			transaction = session.beginTransaction();
			session.delete(subject);
			transaction.commit();
		} catch (HibernateException e) {
			e.printStackTrace();
			transaction.rollback();
		}
		HibernateSessionFactory.closeSession();
	}
	/**
	 * 查询的结果数量
	 */
	@SuppressWarnings("unchecked")
	@Override
	public int findLikeQueryCount(String title) {
		String hql = "from Subject as sub where sub.stTitle like :title ";
		Session session = HibernateSessionFactory.getSession();
		Query query = session.createQuery(hql);
		query.setString("title", "%"+title+"%");
		List list = query.list();
		int count = list.size();
		HibernateSessionFactory.closeSession();
		return count;
	}
	/**
	 * 根据id查询一条记录
	 */
	@Override
	public Subject findSubjectByID(int id) {
		Session session = HibernateSessionFactory.getSession();
		Subject subject = (Subject)session.get(Subject.class, id);
		HibernateSessionFactory.closeSession();
		return subject;
	}
	/**