IBATISNET中的lazyLoad

使用IBATISNET免不了用到lazyload特性，这样可以实现延迟加载，提高数据库访问效率。但使用lazyload的时候要小心，别忘了给需要lazyload的属性加上virtual关键字哦，不然的话无法实现延迟加载的(我发现在单步调试的时候反而可以延迟加载)。

映射文件：

     < resultMap  id ="ApplicationResult"  class ="Application" >
       < result  property ="Id"  column ="id"  dbType ="guid" />
       < result  property ="YearNum"  column ="yearnum" />

       < result  property ="Budget.XMLValue"  column ="budget" />
       < result  property ="StudentInfo"  column ='id'  select ="Application.SelectStudentInfo"  lazyLoad ="true" />
       < result  property ="TeacherInfo"  column ="id"  select ="Application.SelectTeacherInfo"  lazyLoad ="true" />

     </ resultMap >

 

对应的Model

 

    [Serializable]
     public   class  Application
    {
         #region  Model
         private  Guid _id  =  Guid.Empty;

         private  IList < StudentInfo >  _students  =   new  List < StudentInfo > ( 0 );
         private  IList < TeacherInfo >  _teachers  =   new  List < TeacherInfo > ( 0 );

         public  Application()
        { }

         public  Guid Id
        {
             set  { _id  =  value; }
             get  {  return  _id; }
        }

         public   virtual  IList < StudentInfo >  StudentInfo
        {
             get  {  return  _students; }
             set  { _students  =  value; }
        }

         public   virtual  IList < TeacherInfo >  TeacherInfo
        {
             get  {  return  _teachers; }
             set  { _teachers  =  value; }
        }

}