[jira] Commented: (IBATIS-225) Reuse resultmap for single bean property

["Paul Benedict (JIRA)" <ib...@incubator.apache.org>]

    [ http://issues.apache.org/jira/browse/IBATIS-225?page=comments#action_12372163 ] 

Paul Benedict commented on IBATIS-225:
--------------------------------------

It is unfortunate <result> has a @resultMap attribute because it really doesn't do what it implies. @resultMap, on the surface, should include processing from another resultMap, but it really performs a group by. 

This limitation prevents me from re-using alot of resultMaps I already have defined because I deal heavily with nested objects, and it doesn't make any sense to run a @select unless I want to incur another database hit. 

I would first like it renamed. If not, maybe add an @includeResultMap attribute?

> Reuse resultmap for single bean property
> ----------------------------------------
>
>          Key: IBATIS-225
>          URL: http://issues.apache.org/jira/browse/IBATIS-225
>      Project: iBatis for Java
>         Type: Improvement
>   Components: SQL Maps
>     Reporter: Huy Do

>
> Allow the following reuse of result maps
> <resultMap id="Pick" class="package.domain.Pick">
>   <result property="pickId" column="pick_id"/>
>    <result property="sale" resultMap="Sale"/>
> </resultMap>
> <resultMap id="Sale" class="Sale">
>    <result column="sale_id" property="saleId"/>
> </resultMap>
> with beans
> class Pick {
>       String pickId;
>       Sale sale;
> }
> class Sale {
>       String saleId;
> }
> At the moment <result property="sale" resultMap="Sale"/> can only be reused if property "sale" is a collection.

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