tbuserdao.java

来自「Struts2一个应用示例。主要是加深对Struts2d的一个理解。希望对初学者」· Java 代码 · 共 157 行

package com.dao;

import java.util.List;
import java.util.Set;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.LockMode;
import org.hibernate.Query;
import org.springframework.context.ApplicationContext;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

import com.po.TbUser;
import com.struts.form.LoginForm;

/**
 * Data access object (DAO) for domain model class TbUser.
 * @see com.po.TbUser
 * @author MyEclipse - Hibernate Tools
 */
public class TbUserDAO extends HibernateDaoSupport {

    private static final Log log = LogFactory.getLog(TbUserDAO.class);

	//property constants
	public static final String USER_NAME = "userName";
	public static final String USER_PASSWORD = "userPassword";
	public static final String USER_TYPE = "userType";

	protected void initDao() {
		//do nothing
	}
    
    public void save(TbUser transientInstance) {
        log.debug("saving TbUser instance");
        try {
            getHibernateTemplate().save(transientInstance);
            log.debug("save successful");
        } catch (RuntimeException re) {
            log.error("save failed", re);
            throw re;
        }
    }
    
	public void delete(TbUser persistentInstance) {
        log.debug("deleting TbUser instance");
        try {
            getHibernateTemplate().delete(persistentInstance);
            log.debug("delete successful");
        } catch (RuntimeException re) {
            log.error("delete failed", re);
            throw re;
        }
    }
    
    public TbUser findById( java.lang.Integer id) {
        log.debug("getting TbUser instance with id: " + id);
        try {
            TbUser instance = (TbUser) getHibernateTemplate()
                    .get("com.po.TbUser", id);
            return instance;
        } catch (RuntimeException re) {
            log.error("get failed", re);
            throw re;
        }
    }
    
    public TbUser checkUser(LoginForm login) {
       
        try {
            Query query=getSession().createQuery("from TbUser u where u.userName='"+login.getUsername()+"' and u.userPassword='"+login.getUserpassword()+"'");
            List list= query.list();
            TbUser user=null;
            if(list.iterator().hasNext())
            	user=(TbUser) list.iterator().next();
            return user;
        } catch (RuntimeException re) {
            log.error("get failed", re);
            throw re;
        }
    }
    
    public List findByExample(TbUser instance) {
        log.debug("finding TbUser 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 TbUser instance with property: " + propertyName
            + ", value: " + value);
      try {
         String queryString = "from TbUser 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 findByUserName(Object userName) {
		return findByProperty(USER_NAME, userName);
	}
	
	public List findByUserPassword(Object userPassword) {
		return findByProperty(USER_PASSWORD, userPassword);
	}
	
	public List findByUserType(Object userType) {
		return findByProperty(USER_TYPE, userType);
	}
	
    public TbUser merge(TbUser detachedInstance) {
        log.debug("merging TbUser instance");
        try {
            TbUser result = (TbUser) getHibernateTemplate()
                    .merge(detachedInstance);
            log.debug("merge successful");
            return result;
        } catch (RuntimeException re) {
            log.error("merge failed", re);
            throw re;
        }
    }

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

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