pricingdao.java

达内培训时做的亚信的实战项目 包含数据库 struts+hibernate

package com.tarena.oos.DAO;

import com.tarena.oos.DAO.BaseDAO;
import com.tarena.oos.model.Pricing;

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 Pricing.
 * @see .Pricing
  * @author MyEclipse Persistence Tools 
 */

public class PricingDAO extends BaseDAO  {
    private static final Log log = LogFactory.getLog(PricingDAO.class);
	//property constants
	public static final String PRICING_NAME = "pricingName";
	public static final String BASE_FEE = "baseFee";
	public static final String RATE_FEE = "rateFee";
	public static final String PRICING_DESC = "pricingDesc";


    
    public void save(Pricing transientInstance) {
        log.debug("saving Pricing instance");
        try {
            getSession().save(transientInstance);
            getSession().beginTransaction().commit();
            getSession().flush();
            log.debug("save successful");
        } catch (RuntimeException re) {
            log.error("save failed", re);
            throw re;
        }
    }
    
	public void delete(Pricing persistentInstance) {
        log.debug("deleting Pricing instance");
        try {
            getSession().delete(persistentInstance);
            getSession().beginTransaction().commit();
            getSession().flush();
            log.debug("delete successful");
           
        } catch (RuntimeException re) {
            log.error("delete failed", re);
            throw re;
        }
    }
    
    public Pricing findById( java.lang.Integer id) {
        log.debug("getting Pricing instance with id: " + id);
        try {
            Pricing instance = (Pricing) getSession()
                    .get(Pricing.class, id);
            return instance;
        } catch (RuntimeException re) {
            log.error("get failed", re);
            throw re;
        }
    }
    
    
    public List findByExample(Pricing instance) {
        log.debug("finding Pricing instance by example");
        try {
            List results = getSession()
                    .createCriteria("Pricing")
                    .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 Pricing instance with property: " + propertyName
            + ", value: " + value);
      try {
         String queryString = "from Pricing 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 findByPricingName(Object pricingName) {
		return findByProperty(PRICING_NAME, pricingName);
	}
	
	public List findByBaseFee(Object baseFee) {
		return findByProperty(BASE_FEE, baseFee);
	}
	
	public List findByRateFee(Object rateFee) {
		return findByProperty(RATE_FEE, rateFee);
	}
	
	public List findByPricingDesc(Object pricingDesc) {
		return findByProperty(PRICING_DESC, pricingDesc);
	}
	

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

    public void attachDirty(Pricing instance) {
        log.debug("attaching dirty Pricing instance");
        try {
            getSession().saveOrUpdate(instance);
            getSession().beginTransaction().commit();
            getSession().flush();
            log.debug("attach successful");
        } catch (RuntimeException re) {
            log.error("attach failed", re);
            throw re;
        }
    }
    
    public void attachClean(Pricing instance) {
        log.debug("attaching clean Pricing instance");
        try {
            getSession().lock(instance, LockMode.NONE);
            log.debug("attach successful");
        } catch (RuntimeException re) {
            log.error("attach failed", re);
            throw re;
        }
    }
}