pressdao.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.Press;

/**
 * A data access object (DAO) providing persistence and search support for Press
 * 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.Press
 * @author MyEclipse Persistence Tools
 */

public class PressDAO extends HibernateDaoSupport {
	private static final Log log = LogFactory.getLog(PressDAO.class);
	// property constants
	public static final String PUBLISHERNAME = "publishername";

	protected void initDao() {
		// do nothing
	}

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

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

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

	public List findByExample(Press instance) {
		log.debug("finding Press 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 Press instance with property: " + propertyName
				+ ", value: " + value);
		try {
			String queryString = "from Press 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 findByPublishername(Object publishername) {
		return findByProperty(PUBLISHERNAME, publishername);
	}

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

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

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

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

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