classesdao.java

jsp例程

package dao;

import hibernate.Classes;

import java.util.List;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;



public class ClassesDAO extends HibernateDaoSupport{
	private static Log log=(Log) LogFactory.getLog(ClassesDAO.class);
    public List getClasses()
    {
    	try{
    	List list=this.getHibernateTemplate().find("form Classes cla");
    	
		return list;
    	}catch(Exception e)
    	{
    		log.fatal(e);
    		return null;
    	}
    }
    public boolean deleteClassesByID(String id)
    {
    	try{
    		
    		Classes cla=(Classes) this.getHibernateTemplate().load(Classes.class, id);
    		this.getHibernateTemplate().delete(cla);
    		return true;
    	}catch(Exception e)
    	{
    		log.fatal(e);
    		return false;
    	}
    }
    public Classes getClassesByID(String id)
    {
    	try{
    		Classes cla=(Classes) this.getHibernateTemplate().load(Classes.class, id);
    		return cla;
    	}catch(Exception e)
    	{
    		log.fatal(e);
    		return null;
    	}
    }
    public boolean updateClasses(Classes cla)
    {
    	try{
    		this.getHibernateTemplate().update(cla);
    		return true;
    	}catch(Exception e)
    	{
    		log.fatal(e);
    		return false;
    	}
    }
    public boolean saveClasses(Classes cla)
    {
    	try{
    		this.getHibernateTemplate().save(cla);
    		return true;
    	}catch(Exception e)
    	{
    		log.fatal(e);
    		return false;	
    	}
		
    	
    }
}