java 树形结构设计(四) Struts + Hibernate

step 8: 数据访问类DAO

java 代码

/**
 * 地理信息
 */
package com.fzfx88.base.service;

import java.util.List;

import org.apache.commons.logging.Log;
import org.hibernate.Criteria;
import org.hibernate.Hibernate;
import org.hibernate.HibernateException;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.criterion.Order;
import org.hibernate.criterion.Restrictions;

import com.fzfx88.common.UserInfo;
import com.fzfx88.common.util.DateUtility;
import com.fzfx88.common.util.LogUtil;
import com.fzfx88.po.base.DimGeography;
import com.fzfx88.util.HibernateUtil;

/**
 * @author huguoqing
 *
 */
public class GeographyService {
    Log log = LogUtil.getLoger(OrgService.class);

    /**
     * 取得当前所有的地理信息
     *
     * @return
     */
    public List queryGeography() {
        List graphyList = null;
        Session session = HibernateUtil.currentSession();
        try {
            Query query = session
                    .createQuery("from DimGeography o where o.usageFlag='1' order by o.id");
            graphyList = query.list();
        } catch (HibernateException e) {
            log.error(e.getMessage());
        } finally {

            HibernateUtil.closeSession();
        }
        return graphyList;
    }
    public List queryGeoByLevelId(Integer levelId,Integer parentGeo) {
        List graphyList = null;
        Session session = HibernateUtil.currentSession();
        try {

            Criteria crit = session.createCriteria(DimGeography.class);
            crit.add(Restrictions.eq("geographyLevel",levelId));
            crit.add(Restrictions.eq("parentGeo",parentGeo));
            crit.add(Restrictions.eq("usageFlag","1"));
            graphyList = crit.list();
        } catch (HibernateException e) {
            e.printStackTrace();
            log.error(e.getMessage());
        } finally {

            HibernateUtil.closeSession();
        }
        return graphyList;
    }
     public List queryGeoByLevelId(Integer levelId) {
            List graphyList = null;
            Session session = HibernateUtil.currentSession();
            try {

                Criteria crit = session.createCriteria(DimGeography.class);
                crit.add(Restrictions.eq("geographyLevel",levelId));
                crit.add(Restrictions.eq("usageFlag","1"));
                graphyList = crit.list();
            } catch (HibernateException e) {
                e.printStackTrace();
                log.error(e.getMessage());
            } finally {

                HibernateUtil.closeSession();
            }
            return graphyList;
        }
    /**
     * 根据地理信息的英文名称模糊查询
     * @param geoName
     * @return
     */
public List queryGeoListByGeoNameEn(String geoName,String geoLevel){
    List graphyList = null;
    Session session = HibernateUtil.currentSession();
    try {

        Criteria crit = session.createCriteria(DimGeography.class);
        crit.add(Restrictions.eq("usageFlag","1"));
        crit.add(Restrictions.eq("geographyLevel",Integer.valueOf(geoLevel)));
        crit.add(Restrictions.like("geographyNameEn","%"+geoName+"%"));
        graphyList = crit.list();
    } catch (HibernateException e) {
        e.printStackTrace();
        log.error(e.getMessage());
    } finally {

        HibernateUtil.closeSession();
    }
    return graphyList;
}
    /**
     * 根据获得的父id，查村当前id下所有的字节点地理信息
     *
     * @param parentGeographyId
     * @param usageFlag
     * @return
     */
    public List queryGeographyByParentId(int parentGeographyId, String usageFlag) {
        List graphyList = null;
        Session session = HibernateUtil.currentSession();
        try {

            Criteria crit = session.createCriteria(DimGeography.class);
            crit.add(Restrictions.eq("parentGeo",
                    new Integer(parentGeographyId)));
            crit.add(Restrictions.eq("usageFlag", usageFlag));
            crit.addOrder(Order.desc("geoTreeCode"));
            graphyList = crit.list();
        } catch (HibernateException e) {
            e.printStackTrace();
            log.error(e.getMessage());
        } finally {

            HibernateUtil.closeSession();
        }
        return graphyList;
    }

    /**
     * 根据当前获得的地理信息id，取得地理信息相关信息
     *
     * @param graphyId
     * @return
     */
    public DimGeography queryGeography(Integer graphyId) {
        DimGeography graphy = new DimGeography();
        Session session = HibernateUtil.currentSession();
        try {
            graphy = (DimGeography) session.load(DimGeography.class, graphyId);

        } catch (HibernateException e) {
            e.printStackTrace();
            log.error(e.getMessage());
        } finally {
            HibernateUtil.closeSession();
        }
        return graphy;
    }

    /**
     * 新建 地理信息
     * @param po
     */
    public void createGeography(DimGeography po,UserInfo user) {
        Session session = HibernateUtil.currentSession();
        Transaction tx = null;
        po.setCreateBy(user.getEmployeeName());
        po.setCreateDate(DateUtility.getCurrentDate());
        po.setLastupdateBy(user.getEmployeeName());
        po.setLastupdateDate(DateUtility.getCurrentDate());
        po.setUsageFlag("1");
        try {
            tx = session.beginTransaction();
            session.save(po);
            tx.commit();
            session.flush();
        } catch (HibernateException e) {
            log.error(e.getMessage());
        } finally {
            HibernateUtil.closeSession();
        }
    }
    /**
     * 更新地理信息
     * @param vo
     */
    public void updateGeography(DimGeography vo,UserInfo user) {
        Session session = HibernateUtil.currentSession();
        Transaction tran = null;
        try {
            tran = session.beginTransaction();

            vo.setLastupdateBy(user.getEmployeeName());
            vo.setLastupdateDate(DateUtility.getCurrentDateTime());

            session.update(vo);

            tran.commit();
            session.flush();
        } catch (HibernateException e) {
            if (tran != null) {
                tran.rollback();
            }
            log.error(e.getMessage());
        } finally {
            HibernateUtil.closeSession();
        }
    }
    public DimGeography retrieveOrgByTreeCode(String geoTreeCode){
        Session session = HibernateUtil.currentSession();
        Transaction tx = null;
        DimGeography geographyPo = null;
        try {
            tx = session.beginTransaction();
            Query query = session.createQuery("from DimGeography c where c.geoTreeCode=:geoTreeCode and c.usageFlag='1'");
            query.setParameter("geoTreeCode",geoTreeCode);
            geographyPo=(DimGeography)query.uniqueResult();
            if (Hibernate.isInitialized(geographyPo)) {
                Hibernate.initialize(geographyPo);
            }
        } catch (HibernateException e) {
            if (tx != null) {
                tx.rollback();
            }
            log.error(e.getMessage());
        } finally {
            HibernateUtil.closeSession();
        }
        return geographyPo;
 }

    public DimGeography retrieveOrgByTreeCode(String treeCode,int treeCodeNum){
        DimGeography geo = null;
        geo = this.retrieveOrgByTreeCode(treeCode.substring(0,treeCodeNum*3));
        return geo;
    }
}

 

分享到：

java 树形结构设计(五) Struts + Hiberna ... | java 树形结构设计(三) Struts + Hiberna ...

• 2007-05-29 13:05
• 浏览 2154
• 评论(0)
• 查看更多