Re: Constuctor with GroupBy Problem

[Bob Hanson]

Group by result maps do not currently support the use of a constructor
element.

On 7/25/07, Samnang Chhun <[EMAIL PROTECTED]> wrote:

 Hi,



I'm just getting to work with iBatis.Net in my C# project. I found a
problem when I call constructor with groupBy in my ResultMap. What have I
done something wrong?



<resultMap id="personResult" class="Person" groupBy="_id">

      <constructor>

          <argument argumentName="id" column="id"/>

      </constructor>

      <result property="_name" column="name" />

      <result property="_address" resultMapping="Person.addressResult"/>

</resultMap>



<resultMap id="addressResult" class="Address">

      <result property="_type" column="type" />

      <result property="_value" column="value" />

</resultMap>



My error is : System.NullReferenceException: Object reference not set to
an instance of an object.





Cheers,

Samnang