hibernateDaoSupport中的一些公用常用方法

/**
   * 删除记录
   * @param entity BO的对象
   * <pre>
   * this.getHibernateTemplate().delete(entity);
   * 按照规范,调用ECLRecordDelete记录删除的BO信息;
   * </pre>
   */
  public void delete(Object entity){
   this.getHibernateTemplate().delete(entity);
  }
  
  
  
  /**
   * 通过id获得记录
   * @param Class entityClass,对象类型
   * @param Serializable id,BO的id值
   * <pre>
   * return hibernateTemplate.get(entityClass,id);
   * </pre>
   */
  public Object findById(Class entityClass, Serializable id) {
   return this.getHibernateTemplate().get(entityClass,id);
  }
  
  /**
   * 获得延迟加载数据
   * @param Object object，需要加载的对象
   * <pre>
   * Hibernate.initialize(object);
   * </pre>
   */
  public void getLazyData(Object object) {
   this.getHibernateTemplate().initialize(object);
  }
  
  /**
   * 增加记录
   * @param Object entity,需要保存的BO
   * <pre>
   * hibernateTemplate.save(entity);
   * return entity;
   * </pre>
   */
  public Object save(Object entity) {
   Object id = (Object)this.getHibernateTemplate().save(entity);
   return id;
  }
  
  /**
   * 修改记录
   * @param Object,要修改的BO
   * <pre>
   * hibernateTemplate.update(entity);
   * </pre>
   */
  public void update(Object entity) {
   this.getHibernateTemplate().update(entity);
  }

 

 

  //通过传递多个条件查询表记录

  public List findByHQLCondition(Class entityClass,List propertyNameList,List propertyValueList){
   StringBuffer sqlStr = new StringBuffer();
   sqlStr.append("from ").append(entityClass.getName()).append(" as bo");
   sqlStr.append(" where 1=1 ");
   if(propertyNameList !=null && propertyValueList!=null && propertyNameList.size() == propertyValueList.size()){
    for(int i=0;i<propertyNameList.size();i++){
     sqlStr.append(" and bo.").append(propertyNameList.get(i)).append(" = :").append(propertyNameList.get(i));
    }
   }else{
    return null;
   }
   final String sql = sqlStr.toString();
   final List propertyNList = propertyNameList;
   final List propertyVList = propertyValueList;
   return(List) getHibernateTemplate().execute(new HibernateCallback() {
   public Object doInHibernate(Session session)
          throws HibernateException, SQLException {
     List li = new ArrayList();
     Query query = session.createQuery(sql);
     for(int i=0;i<propertyNList.size();i++){
      query.setParameter(propertyNList.get(i).toString(),propertyVList.get(i));
     }
     
     Iterator it = query.iterate();
     while(it.hasNext()){
      li.add(it.next());
     }
     return li;
    }
   });
  }

 

 //根据传递的HQL语句，来查询数据库

  public List findByHQL(String hql){
   return this.getHibernateTemplate().find(hql);
  }

 

//只根据一个条件来查询数据库字段

  public List findByOneHQLCondition(Class entityClass,String propertyName,String propertyValue) {
   StringBuffer sqlStr = new StringBuffer();
   sqlStr.append("from ").append(entityClass.getName()).append(" as bo where bo.");
   sqlStr.append(propertyName);
   sqlStr.append(" = :");
   sqlStr.append(propertyName);
   
   final String sql = sqlStr.toString();
   
   return getHibernateTemplate().findByNamedParam(sql, propertyName,propertyValue);
  }