helperhibernatedao.java

这是基于spring +hibernate的项目

package com.pure.dao.hibernate;

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.Query;
import org.hibernate.Session;
import org.springframework.dao.DataAccessException;
import org.springframework.orm.hibernate3.HibernateCallback;

import com.pure.dao.HelperDAO;
import com.pure.domain.Helper;
import com.pure.page.Page;

/**
 * 购物指南DAO接口实现类
 * 
 * @author pure
 * 
 */
public class HelperHibernateDAO extends BaseDao implements HelperDAO {
	protected final Log logger = LogFactory.getLog(getClass());

	public void insertHelper(Helper helper) throws DataAccessException {
		this.getHibernateTemplate().save(helper);
	}

	public void saveOrUpdate(Helper helper) {
		this.getHibernateTemplate().saveOrUpdate(helper);
	}

	public void updateHelper(Helper helper) throws DataAccessException {
		this.getHibernateTemplate().update(helper);
	}

	public List getHelperList(final Page page) {
		return getHibernateTemplate().executeFind(new HibernateCallback() {
			public Object doInHibernate(Session s) throws HibernateException,
					SQLException {
				Query query = s.createQuery(page.getHql());
				query.setFirstResult(page.getStartRs());
				query.setMaxResults(page.getPerPage());
				List list = query.list();
				return list;

			}
		});
	}

	public List getHelperList(final int num, final String hql) {
		return getHibernateTemplate().executeFind(new HibernateCallback() {
			public Object doInHibernate(Session s) throws HibernateException,
					SQLException {
				Query query = s.createQuery(hql);
				query.setFirstResult(0);
				query.setMaxResults(num);
				List list = query.list();
				return list;

			}
		});
	}

	public Helper getHelper(final int id) {
		List dataList = this.getHibernateTemplate().find(
				"from Helper helper where helper.id = ?", new Long(id));
		if (dataList.size() == 0) {
			return new Helper();
		} else {
			return (Helper) dataList.get(0);
		}
	}

	// TODO 只取一条记录实现方式需要优化
	public Helper getFirstHelper() {
		List dataList = this.getHibernateTemplate().find("from Helper helper");
		if (dataList.size() == 0) {
			return new Helper();
		} else {
			return (Helper) dataList.get(0);
		}
	}

	public void delHelper(final int id) {
		getHibernateTemplate().executeFind(new HibernateCallback() {
			public Object doInHibernate(Session s) throws HibernateException,
					SQLException {
				Query query = s.createQuery("delete Helper where id=:id");
				query.setInteger("id", id);
				query.executeUpdate();
				return null;
			}
		});
	}

}