shoppingcardao.java

网上购物系统 基于jsp实现 运行环境eclipse+My SQL+TomCat

package book.jsj0707.dao;

import java.util.List;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.LockMode;
import org.springframework.context.ApplicationContext;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

import book.jsj0707.entity.Shoppingcar;

/**
 * A data access object (DAO) providing persistence and search support for
 * Shoppingcar 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 book.jsj0707.dao.Shoppingcar
 * @author MyEclipse Persistence Tools
 */
public class ShoppingcarDAO extends HibernateDaoSupport {
	private static final Log log = LogFactory.getLog(ShoppingcarDAO.class);
	// property constants
	public static final String BOOKNAME = "bookname";
	public static final String NUMBERS = "numbers";
	public static final String SESSIONID = "sessionid";
	public static final String PRICE = "price";

	protected void initDao() {
		// do nothing
	}

	public List findbySessionidBookid(String sessionid,String bookid) {
		log.debug("finding all Shoppingcar instances");
		try {
			String queryString = "from Shoppingcar where sessionid='"+sessionid
			+"' and bookid="+bookid;
			return getHibernateTemplate().find(queryString);
		} catch (RuntimeException re) {
			log.error("find all failed", re);
			throw re;
		}
	}
	
	public void save(Shoppingcar transientInstance) {
		log.debug("saving Shoppingcar instance");
		try {
			getHibernateTemplate().save(transientInstance);
			log.debug("save successful");
		} catch (RuntimeException re) {
			log.error("save failed", re);
			throw re;
		}
	}

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

	public Shoppingcar findById(java.lang.Long id) {
		log.debug("getting Shoppingcar instance with id: " + id);
		try {
			Shoppingcar instance = (Shoppingcar) getHibernateTemplate().get(
					"book.jsj0707.dao.Shoppingcar", id);
			return instance;
		} catch (RuntimeException re) {
			log.error("get failed", re);
			throw re;
		}
	}

	public List findByExample(Shoppingcar instance) {
		log.debug("finding Shoppingcar 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 Shoppingcar instance with property: " + propertyName
				+ ", value: " + value);
		try {
			String queryString = "from Shoppingcar 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 findByBookname(Object bookname) {
		return findByProperty(BOOKNAME, bookname);
	}

	public List findByNumbers(Object numbers) {
		return findByProperty(NUMBERS, numbers);
	}

	public List findBySessionid(Object sessionid) {
		return findByProperty(SESSIONID, sessionid);
	}

	public List findByPrice(Object price) {
		return findByProperty(PRICE, price);
	}

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

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

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

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

	public static ShoppingcarDAO getFromApplicationContext(
			ApplicationContext ctx) {
		return (ShoppingcarDAO) ctx.getBean("ShoppingcarDAO");
	}
}