adminerdao.java

struts spring hibernate 自已写的

package com.hb.gf.hi;

import java.sql.SQLException;
import java.util.List;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.HibernateException;
import org.hibernate.LockMode;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
import org.springframework.context.ApplicationContext;
import org.springframework.orm.hibernate3.HibernateCallback;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;


/**
 * A data access object (DAO) providing persistence and search support for
 * Adminer 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 com.hb.gf.hi.Adminer
 * @author MyEclipse Persistence Tools
 */

public class AdminerDAO extends HibernateDaoSupport {
	private static final Log log = LogFactory.getLog(AdminerDAO.class);
	// property constants
	public static final String ADMINER = "adminer";
	public static final String PWORD = "pword";
	public static final String HIGH = "high";
	private Session session = null ;
	protected void initDao() {
		// do nothing
	}
	
	
	public void save(Adminer transientInstance) {
		log.debug("saving Adminer instance");
		try {
			getHibernateTemplate().save(transientInstance);
			log.debug("save successful");
		} catch (RuntimeException re) {
			log.error("save failed", re);
			throw re;
		}
	}

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

	public Adminer findById(java.lang.Integer id) {
		log.debug("getting Adminer instance with id: " + id);
		try {
			Adminer instance = (Adminer) getHibernateTemplate().get(
					"com.hb.gf.hi.Adminer", id);
			return instance;
		} catch (RuntimeException re) {
			log.error("get failed", re);
			throw re;
		}
	}

	public List findByExample(Adminer instance) {
		log.debug("finding Adminer instance by example");
		try {
			List results = getHibernateTemplate().findByExample(instance);
			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 Adminer instance with property: " + propertyName
				+ ", value: " + value);
		try {
			String queryString = "from Adminer as model where model."
					+ propertyName + "= ?";
			return getHibernateTemplate().find(queryString, value);
		} catch (RuntimeException re) {
			log.error("find by property name failed", re);
			throw re;
		}
	}

	public List findByAdminer(Object adminer) {
		return findByProperty(ADMINER, adminer);
	}

	public List findByPword(Object pword) {
		return findByProperty(PWORD, pword);
	}

	public List findByHigh(Object high) {
		return findByProperty(HIGH, high);
	}

	public List findAll() {
		log.debug("finding all Adminer instances");
		try {
			String queryString = "from Adminer";
			return getHibernateTemplate().find(queryString);
		} catch (RuntimeException re) {
			log.error("find all failed", re);
			throw re;
		}
	}

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

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

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

	public static AdminerDAO getFromApplicationContext(ApplicationContext ctx) {
		return (AdminerDAO) ctx.getBean("AdminerDAO");
	}
	/*
	public int producttotal() {
		int maxid;
		maxid = ((Long) (this.getHibernateTemplate().executeFind( 
				new HibernateCallback() { 
				public Object doInHibernate(org.hibernate.Session session) 
				throws HibernateException, SQLException { 
				String sql = "select max(id) from adminer"; 
				Query query = session.createQuery(sql); 
				return query.list(); 
				} 
				}).get(0))).intValue(); 
		return maxid;

	}
	*/
	///*
	public int producttotal() {
		
			// 找到Hibernate配置
			Configuration config = new Configuration().configure() ;
			// 从配置中取出SessionFactory
			SessionFactory factory = config.buildSessionFactory() ;
			// 从SessionFactory中取出一个Session
			this.session = factory.openSession() ;
		
		String sql = "from adminer as a";
		Session ses =  this.session;
		try {
			Query query = ses.createQuery(sql);
			return query.list().size();
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
			return 0;
		} finally {
			ses.clear();
			ses.close();
		}

	}
	//*/

// ��ҳ��ѯ
	public List findWithPage(int pageSize, int startRow) {
		String sql = "from adminer as a";
		Session session = this.getSession();
		try {
			if (startRow == 0 || startRow < 0) {
				Query query = session.createQuery(sql);
				query.setFirstResult(0);
				query.setMaxResults(pageSize);
				
				return query.list();

			} else {
				Query query = session.createQuery(sql);
				query.setFirstResult(startRow);
				query.setMaxResults(pageSize);
				
				return query.list();
			}

		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
			return null;
		} finally {
			session.clear();
			session.close();
		}
	}
	
	
}