stylesdaoimpl.java

论坛软件系统亦称电子公告板(BBS)系统

package cn.jsprun.dao.impl;

import java.util.ArrayList;
import java.util.List;

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

import cn.jsprun.dao.StylesDao;
import cn.jsprun.domain.Styles;
import cn.jsprun.utils.HibernateUtil;

public class StylesDaoImpl implements StylesDao {
	public boolean addStyle(Styles style) {
		boolean flag = false;
		if (style != null) {
			Session session = null;
			Transaction tran = null;
			try {
				session = HibernateUtil.getSessionFactory().getCurrentSession();
				tran = session.beginTransaction();
				session.save(style);
				flag = true;
				tran.commit();
			} catch (HibernateException e) {
				flag = false;
				if(tran!=null){
					tran.rollback();
				}
				e.printStackTrace();
			}
		}
		return flag;
	}

	public boolean removeStyle(Styles style) {
		boolean flag = false;
		if (style != null) {
			Session session = null;
			Transaction tran = null;
			try {
				session = HibernateUtil.getSessionFactory().getCurrentSession();
				tran = session.beginTransaction();
				session.delete(style);
				flag = true;
				tran.commit();
			} catch (HibernateException e) {
				flag = false;
				if(tran!=null){
					tran.rollback();
				}
				e.printStackTrace();
			}
		}
		return flag;
	}

	public boolean updateStyle(Styles style) {
		boolean flag = false;
		if (style != null) {
			Session session = null;
			Transaction tran = null;
			try {
				session = HibernateUtil.getSessionFactory().getCurrentSession();
				tran = session.beginTransaction();
				session.saveOrUpdate(style);
				flag = true;
				tran.commit();
			} catch (HibernateException e) {
				flag = false;
				if(tran!=null){
					tran.rollback();
				}
				e.printStackTrace();
			}
		}
		return flag;
	}
	@SuppressWarnings("unchecked")
	public List<Styles> findByProperty(String propertyName, Object value) {
		Session session = null;
		Transaction tran = null;
		Query query = null;
		List<Styles> styles = null;
		try {
			styles = new ArrayList<Styles>();
			session = HibernateUtil.getSessionFactory().getCurrentSession();
			tran = session.beginTransaction();
			query = session.createQuery("from Styles as s where s."
					+ propertyName + "=?");
			query.setString(0, value.toString());
			styles = query.list();
			tran.commit();
		} catch (HibernateException e) {
			if(tran!=null){
				tran.rollback();
			}
			e.printStackTrace();
		}
		return styles;
	}
	public Styles findById(Short styleid)
	{
		Session session = null;
		Transaction tran = null;
		Styles style = null;
		try {
			session = HibernateUtil.getSessionFactory().getCurrentSession();
			tran = session.beginTransaction();
			style = (Styles) session.get(Styles.class, styleid);
			tran.commit();
		} catch (HibernateException e) {
			if(tran!=null){
				tran.rollback();
			}
			e.printStackTrace();
		}
		return style;
	}
	@SuppressWarnings("unchecked")
	public List<Styles> findAll() {
		Session session = null;
		Transaction tran = null;
		Query query = null;
		List<Styles> styles = null;
		try {
			styles = new ArrayList<Styles>();
			session = HibernateUtil.getSessionFactory().getCurrentSession();
			tran = session.beginTransaction();
			query = session.createQuery("from Styles");
			styles = query.list();
			tran.commit();
		} catch (HibernateException e) {
			if(tran!=null){
				tran.rollback();
			}
			e.printStackTrace();
		}
		return styles;
	}
}