Hibernate DAO的具体实现

定义BaseDAO: (增/删/改/查单个/查集合/查集合2)

 

public interface BaseDAO{
    <T>void add(T object);
    <T>void delete(Class clazz,Serializable id);
    <T>void update(T clazz);
    <T> T get(Class<T> clazz,Serializable id);
    <T>List<T>search(Class<T> clazz);
    <T>List<T> search(Class<T> clazz,Object condition);
}

public interface BaseDAO{
	<T>void add(T object);
	<T>void delete(Class clazz,Serializable id);
	<T>void update(T clazz);
	<T> T get(Class<T> clazz,Serializable id);
	<T>List<T>search(Class<T> clazz);
	<T>List<T> search(Class<T> clazz,Object condition);	
}

 

 然后再impl包中实现该接口：

 

public class BaseDAOSupport implements BaseDAO {

    private Session session;

    protected Session getSession() {
        return HibernateSessionFactory.getSession();
    }
    public void setSession(Session session) {
        this.session = session;
    }
    /**
     * 增加
     */
    public <T> void add(T object) {
        Transaction ts = null;
        try {
            ts = getSession().beginTransaction();
            getSession().save(object);
            ts.commit();
        } catch (HibernateException e) {
            if(null != ts){
                ts.rollback();
            }
            e.printStackTrace();
        }finally{
            HibernateSessionFactory.closeSession();
        }

    }
    /**
     * 删除
     */
    public <T> void delete(Class clazz,Serializable id) {
        Transaction ts = null;
        try {
            ts = getSession().beginTransaction();
            getSession().delete(get(clazz, id));
            ts.commit();
        } catch (HibernateException e) {
            if(null != ts){
                ts.rollback();
            }
            e.printStackTrace();
        }finally{
            HibernateSessionFactory.closeSession();
        }
    }
    /**
     * 更新
     */
    public <T> void update(T clazz) {
        Transaction ts = null;
        try {
            ts = getSession().beginTransaction();
            getSession().update(clazz);
            ts.commit();
        } catch (HibernateException e) {
            if(null != ts){
                ts.rollback();
            }
            e.printStackTrace();
        }finally{
            HibernateSessionFactory.closeSession();
        }

    }
    /**
     * 查询单个
     */
    public <T> T get(Class<T> clazz, Serializable id) {
        return (T) getSession().get(clazz, id);
    }
    /**
     * 无条件查询集合
     */
    public <T> List<T> search(Class<T> clazz) {
        List<T> list = getSession().createCriteria(clazz).list();
        return list ;
    }
    /**
     * 有条件查询集合
     */
    public <T> List<T> search(Class<T> clazz, Object condition) {
        List<T> list = getSession().createCriteria(clazz).add(Example.create(condition)).list();
        return list;
    }

}