abstractdao.java

外买系统struts2

package com.waimai.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 com.waimai.domain.BaseDomain;
import com.waimai.domain.TWmCaitype;

/**
 * 描述:
 * @author Stone yang  创建日期:2007-5-12 
 * @version pattern Study
 * 技术支持: <a href="http://blog.csdn.net/yq76034150">http://blog.csdn.net/yq76034150</a>
 */
public abstract class AbstractDao extends HibernateDaoSupport implements Dao {
	private static final Log log = LogFactory.getLog(AbstractDao.class);
	
	/**
	 * 描述：
	 * @author Stone yang
	 * @see com.waimai.dao.Dao#attachClean(com.waimai.domain.BaseDomain)
	 */
	public void attachClean(BaseDomain instance) {
        log.debug("attaching clean TWmCaitype instance");
        try {
            getHibernateTemplate().lock(instance, LockMode.NONE);
            log.debug("attach successful");
        } catch (RuntimeException re) {
            log.error("attach failed", re);
            throw re;
        }
    }

	/**
	 * 描述：
	 * @author Stone yang
	 * @see com.waimai.dao.Dao#attachDirty(com.waimai.domain.BaseDomain)
	 */
	public void attachDirty(BaseDomain instance) {
        log.debug("attaching dirty TWmCaitype instance");
        try {
            getHibernateTemplate().saveOrUpdate(instance);
            log.debug("attach successful");
        } catch (RuntimeException re) {
            log.error("attach failed", re);
            throw re;
        }
    }

	/**
	 * 描述：
	 * @author Stone yang
	 * @see com.waimai.dao.Dao#delete(com.waimai.domain.BaseDomain)
	 */
	public void delete(BaseDomain persistentInstance) {
        log.debug("deleting TWmCaitype instance");
        try {
            getHibernateTemplate().delete(persistentInstance);
            log.debug("delete successful");
        } catch (RuntimeException re) {
            log.error("delete failed", re);
            throw re;
        }
    }

	/**
	 * 描述：
	 * @author Stone yang
	 * @see com.waimai.dao.Dao#findByExample(com.waimai.domain.BaseDomain)
	 */
	public List findByExample(BaseDomain instance) {
        log.debug("finding TWmCaitype 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;
        }
    }
	
	/**
	 * 描述：
	 * @author Stone yang
	 * @see com.waimai.dao.Dao#findById(java.lang.Integer)
	 */
	public BaseDomain findById(Integer id) {
        log.debug("getting TWmCaitype instance with id: " + id);
        try {
            TWmCaitype instance = (TWmCaitype) getHibernateTemplate()
                    .get("com.waimai.domain.TWmCaitype", id);
            return instance;
        } catch (RuntimeException re) {
            log.error("get failed", re);
            throw re;
        }
    }

	/**
	 * 描述：
	 * @author Stone yang
	 * @see com.waimai.dao.Dao#findByProperty(java.lang.String, java.lang.Object)
	 */
	public List findByProperty(String propertyName, Object value) {
	      log.debug("finding TWmCaitype instance with property: " + propertyName
	              + ", value: " + value);
	        try {
	           String queryString = "from TWmCaitype as model where model." 
	           						+ propertyName + "= ?";
	  		 return getHibernateTemplate().find(queryString, value);
	        } catch (RuntimeException re) {
	           log.error("find by property name failed", re);
	           throw re;
	        }
	  	}

	/**
	 * 描述：
	 * @author Stone yang
	 * @see com.waimai.dao.Dao#merge(com.waimai.domain.BaseDomain)
	 */
	public BaseDomain merge(BaseDomain detachedInstance) {
        log.debug("merging TWmCaitype instance");
        try {
            TWmCaitype result = (TWmCaitype) getHibernateTemplate()
                    .merge(detachedInstance);
            log.debug("merge successful");
            return result;
        } catch (RuntimeException re) {
            log.error("merge failed", re);
            throw re;
        }
    }

	/**
	 * 描述：
	 * @author Stone yang
	 * @see com.waimai.dao.Dao#save(com.waimai.domain.BaseDomain)
	 */
	public void save(BaseDomain transientInstance) {
        log.debug("saving TWmCaitype instance");
        try {
            getHibernateTemplate().save(transientInstance);
            log.debug("save successful");
        } catch (RuntimeException re) {
            log.error("save failed", re);
            throw re;
        }
    }

	/**
	 * 
	* 描述：用于子类重载，获取spring上下文中dao Bean
	* @param ctx
	* @return
	* @author{user}
	* 创建时间：2007-5-12
	 */
	protected Dao getFromApplicationContext(ApplicationContext ctx) {
		return null;
	}

	
}