carddao.java

基于ajax的dwr框架开发详细实例

package com.yourcompany.bean;

import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.LockMode;
import org.hibernate.Query;
import org.hibernate.criterion.Example;

/**
 * Data access object (DAO) for domain model class Card.
 * 
 * @see com.yourcompany.bean.Card
 * @author MyEclipse Persistence Tools
 */

public class CardDAO extends BaseHibernateDAO {
	private static final Log log = LogFactory.getLog(CardDAO.class);

	public void save(Card transientInstance) {
		log.debug("saving Card instance");
		try {
			
			getSession().save(transientInstance);
			log.debug("save successful");
		} catch (RuntimeException re) {
			log.error("save failed", re);
			throw re;
		}
	}

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

	public Card findById(java.lang.Integer id) {
		log.debug("getting Card instance with id: " + id);
		try {
			Card instance = (Card) getSession().get(
					"com.yourcompany.bean.Card", id);
			return instance;
		} catch (RuntimeException re) {
			log.error("get failed", re);
			throw re;
		}
	}

	public List findByExample(Card instance) {
		log.debug("finding Card instance by example");
		try {
			List results = getSession().createCriteria(
					"com.yourcompany.bean.Card").add(Example.create(instance))
					.list();
			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 Card instance with property: " + propertyName
				+ ", value: " + value);
		try {
			String queryString = "from Card as model where model."
					+ propertyName + "= ?";
			Query queryObject = getSession().createQuery(queryString);
			queryObject.setParameter(0, value);
			return queryObject.list();
		} catch (RuntimeException re) {
			log.error("find by property name failed", re);
			throw re;
		}
	}

	public List findAll() {
		log.debug("finding all Card instances");
		try {
			String queryString = "from Card";
			Query queryObject = getSession().createQuery(queryString);
			return queryObject.list();
		} catch (RuntimeException re) {
			log.error("find all failed", re);
			throw re;
		}
	}

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

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

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